Lighting system
Parts location System information Troubleshooting Circuit diagnosis Removal / installation
LIGHTING (INTERIOR)
LIGHTING SYSTEM
FUNCTION INSPECTION
1. Before troubleshooting
(1) Basic inspection
(a) Measure the battery voltage.
Voltage
: 11 to 14V (when the engine is stopped)
(2) Inspect for blown light bulbs and fuses, wiring harnesses open circuit, short circuits, and poor contact of connectors, in places where you can inspect visually.
2. Illuminated entry system control operation check A
CAUTION:
Perform the check with the initial settings of the customize function.
NOTE:
·Push button start switch (text illumination) *1
·Transponder key amplifier (key cylinder light) *2
*1: When there is a smart entry & start system
*2: When there is no smart entry & start system
The following lights will illuminate with the illuminated entry system (Perform the check with the mode change switch of the map light ASSY set to the DOOR mode):
·Map light ASSY·Push button start switch (text illumination) *1
·Transponder key amplifier (key cylinder light) *2
*1: When there is a smart entry & start system
*2: When there is no smart entry & start system
(1) Check that the lights illuminate in the following conditions:
(a) Open one of the doors.
(2) Check that the light illuminates for 15 seconds and then goes off in one of the following conditions:
(a) Enter the ID collation area for the smart key. * 1
(b) Perform the unlock operation (wireless unlock, smart unlock, and unlock with key interlock).
(c) When any doors are open with IG OFF, close all the doors.
(d) With all the doors closed, turn the ignition from IG ON → IG OFF.
*1: When there is a smart entry & start system
*1: When there is a smart entry & start system
(3) Check that the lights go off in one of the following conditions:
(a) Exit the ID collation area for the smart key, then wait for 3 seconds or more. * 1
(b) Close and lock all the doors with IG OFF.
(c) With all the doors closed, turn the ignition to ACC ON or IG ON.
(d) When the lights illuminate with IG OFF, turn the ignition to ACC ON or start the engine.
*1: When there is a smart entry & start system
*1: When there is a smart entry & start system
3. Battery saver inspection
(1) When one of the doors is not fully closed with IG OFF, check that the lights that illuminated with the illuminated entry system go off after approx. 20 minutes.
NOTE:
If the operating conditions for the light control are met, the battery saver control will be cancelled.
PARTS LOCATION
SYMPTOM TABLE
Illuminated entry system
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The lights do not properly illuminate in all the operating conditions. |
Interior illumination circuit |
 |
| Main body ECM (multiplex network body computer) |
|
|
| The light control does not work with the door open/close operations. |
Front door courtesy light switch circuit |
|
| Main body ECM (multiplex network body computer) |
|
|
| The light control does not work with the door lock operation. |
Main body ECM (multiplex network body computer) |
|
| The light control does not operate when entering the smart detection area. |
CAN communication system check |
|
| Operation check of the smart entry & start system (smart entry function) |
|
|
| Main body ECM (multiplex network body computer) |
|
|
| The light control does not work when operating the push button start switch *1 or the ignition switch ASSY *2. |
IG signal circuit |
|
| ACC signal circuit |
|
|
| Main body ECM (multiplex network body computer) |
|
|
| The push button start switch (text illumination) does not illuminate. *1 |
CAN communication system check |
|
| Engine switch illumination circuit |
|
|
| Smart key computer ASSY (collation ECM) |
- |
*1: When there is a smart entry & start system
*2: When there is no smart entry & start system
*2: When there is no smart entry & start system
Map light ASSY
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The map light ASSY does not illuminate. |
Bulb |
- |
| Map light ASSY |
|
|
| Vehicle wiring harness and connector |
- |
Vanity light ASSY
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The vanity light ASSY does not illuminate. |
Bulb |
- |
| Visor ASSY |
|
|
| Wiring harness or connector (including bulb holder) |
- |
Courtesy light ASSY
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The courtesy light ASSY does not illuminate. |
Bulb |
- |
| Courtesy light ASSY |
|
|
| Front door courtesy light switch ASSY |
|
|
| Front door courtesy light switch circuit |
|
|
| Door courtesy light circuit |
|
|
| Vehicle wiring harness and connector |
- |
|
| Main body ECM (multiplex network body computer) |
|
Battery saver
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The battery saver does not work. |
IG signal circuit |
|
| ACC signal circuit |
|
|
| Front door courtesy light switch circuit |
|
|
| CAN communication system check |
|
|
| Main body ECM (multiplex network body computer) |
- |
*1: When there is a smart entry & start system
Transponder key amplifier (key cylinder light)
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The transponder key amplifier (key cylinder light) does not illuminate. *1 |
Transponder key amplifier (key cylinder light) |
|
| Ignition key cylinder light circuit |
|
|
| Vehicle wiring harness and connector |
- |
|
| Main body ECM (multiplex network body computer) |
|
*1: When there is no smart entry & start system
Trunk light ASSY NO.1
| Symptoms |
Inspection items |
Reference pages |
|---|---|---|
| The trunk room light doesn’t turn on. |
Bulb |
- |
| Trunk light ASSY NO.1 |
|
|
| Trunk courtesy light switch circuit |
|
|
| Vehicle wiring harness and connector |
- |
|
| Instrument panel junction block ASSY |
|
|
| Main body ECM (multiplex network body computer) |
|
HOW TO TROUBLESHOOT
1.
Bring in the car
Next▼
2.
Interview and phenomenon check
NOTE:
Refer to .
.Next▼
3.
Inspection of CAN communication system
(1) Check all diagnostic codes to confirm that no diagnostic code is recorded.
Result
| Result |
Go to |
|---|---|
| No diagnostic code recorded |
A |
| Diagnostic code recorded |
B |
B
>Refer to “CAN communication system”
A▼
4.
Symptom table
NOTE:
Refer to .
.Result
| Result |
Go to |
|---|---|
| Not applicable to the symptom table. |
A |
| Applicable to the symptom table. |
B |
B
>Go to Step 6.
A▼
5.
Based on the trouble phenomenon, perform troubleshooting following the steps below.
(1) Function inspection (refer to )
)(2) ECM terminal matrix (Refer to )
)(3) Current Data Display & Save/ Work Support (Refer to )
)(4) On-vehicle inspection
(5) Unit inspection
Next▼
6.
Adjustment, repair, or replacement
Next▼
7.
Confirmation test
Next▼
Complete
CHECK LIST FOR INTERVIEW
CUSTOMIZE FUNCTION
1. Customization of the lighting system (interior)
(1) Customize using the SSM3
(a) Connect the SSM3 to the DLC3 and turn the ignition to IG ON.
(b) On the SSM3 screen, select [Each System Check]→[Integ. unit mode]→[Unit customizing] to customize the settings.
| Display name |
Initial setting |
Contents |
Setting |
Controller ECM |
|---|---|---|---|---|
| [Lighting Time] |
15 second |
Set the function to automatically turn off the interior light after all the doors are shut, when the interior light is set to the DOOR mode. |
15/7.5/30 seconds |
Main body ECM (multiplex network body computer) |
| [I/L when ACC OFF] |
[ON] |
Set the function to automatically turn on the interior light by turning the ignition from ACC ON → OFF, when the interior light is set to the DOOR mode. |
[ON]/[OFF] |
|
| [I/L ON W/Door Key Unlock] |
[ON] |
Set the function to automatically turn on the interior light in accordance with the door unlock operation with the smart key or the mechanical key, when the interior light is set to the DOOR mode. |
[ON]/[OFF] |
|
| [Room Light when Aprchd] |
[ON] |
Set the function to turn on the interior light when the driver approaches the vehicle carrying the smart key. |
[ON]/[OFF] |
|
| [Interior Light Control] |
[ON] |
Set the function to turn on the interior light by a timer. |
[ON]/[OFF] |
CIRCUIT FIGURE
ECM TERMINAL ARRANGEMENT
1. Main body ECM (multiplex network body computer)
Captions in illustration
| *1 |
Instrument panel junction block ASSY |
*2 |
Main body ECM (multiplex network body computer) |
(1) Inspection of the main body ECM (multiplex network body computer) and the instrument panel junction block ASSY
(a) Disconnect the connector of the main body ECM (multiplex network body computer).
(b) Measure the voltage between the connector terminals on the vehicle wiring harness side.
Standard value
| Terminal No. (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| D5-22 (ACC) ←→ chassis ground *1 |
ACC ON |
11 to 14 V |
*1: When there is a smart entry & start system
NOTE:
If it is out of the standard value, it can be judged as malfunction of the vehicle.
(c) Disconnect the connector of the instrument panel junction block ASSY.
(d) Measure the voltage and resistance between the connector terminals on the vehicle wiring harness side.
Standard value
| Terminal No. (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| 3A-12 ←→ chassis ground |
Always |
Less than 1 Ω |
| 3A-13 ←→ chassis ground |
Always |
Less than 1 Ω |
| 3A-15 ←→ chassis ground |
IG ON |
11 to 14 V |
| 3A-20 ←→ chassis ground |
ACC ON |
11 to 14 V |
| 3A-27 ←→ chassis ground |
Always |
11 to 14 V |
| 3C-19 ←→ chassis ground |
Always |
11 to 14 V |
| 3E-1 ←→ chassis ground |
Always |
11 to 14 V |
| A73-4 (GND) ←→ chassis ground |
Always |
Less than 1 Ω |
| D6-1 (GND) ←→ chassis ground |
Always |
Less than 1 Ω |
NOTE:
If it is out of the standard value, it can be judged as malfunction of the vehicle.
(e) Connect the connectors of the main body ECM (multiplex network body computer) and the instrument panel junction block ASSY.
(f) Measure the voltage or waveform between the connector terminals.
Standard value
| Terminal No. (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| 3A-28 ←→ chassis ground |
With driver’s door closed → opened |
11 to 14V → Less than 1V |
| 3B-13 ←→ chassis ground |
With passenger’s door closed → opened |
11 to 14V → Less than 1V |
| 3D-26 ←→ chassis ground |
With trunk closed → opened |
11 to 14V → Less than 1V |
| D5-5 (FRCL) ←→ chassis ground |
Driver’s side courtesy light ON → OFF |
11 to 14V → Less than 1V |
| D5-6 (FLCL) ←→ chassis ground |
Passenger’s side courtesy light ON → OFF |
11 to 14V → Less than 1V |
| D5-7 (DOMR) ←→ chassis ground |
Map light ASSY OFF → ON |
Less than 1 V → 11 to 14 V |
| D5-28 (ILL) ←→ chassis ground *2 |
Transponder key amplifier (key cylinder light) ON → OFF |
Less than 1 V → 11 to 14 V |
| D6-11 (LSFD) ←→ chassis ground *1 |
Driver’s side door locked → unlocked |
Pulse generation → less than 1 V |
| D6-12 (LSFP) ←→ chassis ground *1 |
Passenger’s side door locked → unlocked |
Pulse generation → less than 1 V |
*1: When there is a smart entry & start system
*2: When there is no smart entry & start system
*2: When there is no smart entry & start system
NOTE:
If the measured value is not within the range of the standard value, it can be determined that the main body ECM (multiplex network body computer) has a fault.
2. Smart key computer ASSY (collation ECM)
(1) Inspection of the smart key computer ASSY (collation ECM)
(a) Disconnect the connector D48 of the smart key computer ASSY (collation ECM).
(b) Measure the voltage and resistance between the connector terminals of the smart key computer ASSY (collation ECM) on the vehicle side.
Standard value
| Terminal No. (Terminal symbol) |
Input/Output |
Item |
Inspection conditions |
Standard value |
|---|---|---|---|---|
| D41-5 (IG2) ←→ chassis ground |
Input |
Voltage |
IG ON |
11 to 14 V |
| D48-2 (+B) ←→ D48-11 |
Input |
Voltage |
Always |
11 to 14 V |
| D48-11 (GND) ←→ chassis ground |
- |
Resistance |
Always |
Less than 1 Ω |
NOTE:
If it is out of the standard value, it can be judged as malfunction of the vehicle.
(c) Connect the connector D48 of the smart key computer ASSY (collation ECM).
(d) Measure the voltage between the connector terminals.
Standard value
| Terminal No. (Terminal symbol) |
Input/Output |
Item |
Inspection conditions |
Standard value |
|---|---|---|---|---|
| D41-16 (SWIL) ←→ D41-24 (AGND) |
Output |
Voltage |
Push button start switch ON → OFF |
11 to 14V → Less than 1V |
NOTE:
If the measured value is not within the range of the standard value, it can be determined that the smart key computer ASSY (collation ECM) has a fault.
CURRENT DATA DISPLAY & SAVE / WORK SUPPORT
1. Inspection with SSM3 ([Current Data Display & Save])
(1) On the SSM3, navigate to the [Current Data Display & Save] display, and check the computer data.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Item Name |
Description/display range |
Normal value |
Remarks |
|---|---|---|---|
| [D Door Courtesy] |
Status of the front door courtesy light switch ASSY RH Display range: [Close]-[Open] |
Close: the driver side door is closed Open: the driver side door is opened |
- |
| [D Door Lock Pos] |
Lock/unlock status of the driver’s side door Display range: [Lock]-[Unlock] |
[Lock]: When the driver’s side door is locked [Unlock]: When the driver’s side door is unlocked |
- |
| [P Door Courtesy] |
Status of the front door courtesy light switch ASSY LH Display range: [Close]-[Open] |
[Close]: When the passenger’s side door is closed [Open]: When the passenger’s side door is open |
- |
| [P Door Lock Pos] |
Lock/unlock status of the passenger’s side door Display range: [Lock]-[Unlock] |
[Lock]: When the passenger’s side door is locked [Unlock]: When the passenger’s side door is unlocked |
- |
| [Luggage Courtesy SW] |
Status of the trunk lock ASSY Display range: [Close]-[Open] |
Close: The trunk is closed. Open: The trunk is open. |
- |
| [Ignition] |
Status of the IG signal Display range: OFF - ON |
[OFF]: IG OFF [ON]: IG ON |
This item will be displayed as [OFF] in the ACC ON status. |
| [ACC SW] |
Status of the ACC signal Display range: OFF - ON |
OFF: ACC OFF ON: ACC ON or IG ON |
This item will be displayed as [ON] in the IG ON status. |
| [Room lamp output] |
Status of the map light ASSY Display range: OFF - ON |
[OFF]: Map light ASSY OFF [ON]: Map light ASSY ON |
- |
| [key illumi. lamp o/p] |
Status of the key cylinder light Display range: OFF - ON |
[OFF]: Key cylinder light OFF [ON]: Key cylinder light ON |
- |
| [D-Door Courtesy Lamp] |
Status of the driver’s side courtesy light ASSY Display range: OFF - ON |
[OFF]: Driver’s side courtesy light ASSY OFF [ON]: Driver’s side courtesy light ASSY ON |
- |
| [P-Door Courtesy Lamp] |
Status of the passenger’s side courtesy light ASSY Display range: OFF - ON |
[OFF]: Passenger’s side courtesy light ASSY OFF [ON]: Passenger’s side courtesy light ASSY ON |
- |
2. Inspection with SSM3 ([Work Support])
(1) On the SSM3, navigate to the [Work Support] display, and check the displayed data.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [Illuminated Entry System]* |
The lights controlled by the illuminated entry system are turned on |
OFF/ON |
| [D-Door Courtesy Lamp] |
The driver’s side courtesy light ASSY is turned on |
OFF/ON |
| [P-Door Courtesy Lamp] |
The passenger’s side courtesy light ASSY is turned on |
OFF/ON |
| [Key illumi. Lamp] |
The key cylinder light is turned on |
OFF/ON |
NOTE:
*: Perform the inspection with the changing switch of the map light ASSY set to the DOOR mode.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [Key illumi. Lamp] |
Turn on the text illumination of the push button start switch. |
Stop/output |
| ACC signal circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) is detecting the ACC signal.
Circuit figure
Inspection steps
CAUTION:
Before performing the troubleshooting, check the fuse of this circuit.
1.
Reading the current data of the SSM3 (ACC SW)
(1) On the SSM3, navigate to the [Current Data Display] display, and check the computer data. (Refer to )
)
Criteria
: The normal value on the data monitor is displayed properly.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Item Name |
Description/display range |
Normal value |
Remarks |
|---|---|---|---|
| [ACC SW] |
Status of the ACC signal Display range: OFF - ON |
OFF: ACC OFF ON: ACC ON or IG ON |
This item will be displayed as [ON] in the IG ON status. |
NG
> Go to Step 2.
OK▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Inspection of the wiring harness and the connector (ACC1 relay power supply)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connectors 3A and 3E of the instrument panel junction block ASSY.
(2) Measure the voltage between the connector terminals on the vehicle wiring harness side.
(3) Measure the resistance between the connector terminals on the vehicle wiring harness side.
Result
| Result |
Go to |
|---|---|
| OK (smart entry & start system not equipped) |
A |
| OK (smart entry & start system equipped) |
B |
| NG |
C |
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (instrument panel junction block ASSY connector) |
B
> Go to Step 4.
C
>Repair or replacement of wiring harness or connector
A▼
3.
Inspection of the instrument panel junction block ASSY (ACC1 relay inspection)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Remove the instrument panel junction block ASSY from the vehicle. (Refer to )
)(2) Remove the main body ECM (multiplex network body computer) from the instrument panel junction block ASSY.
NG
>Replacement of the instrument panel junction block ASSY (Refer to )
)OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)4.
Inspection of the instrument panel junction block ASSY (ACC1 relay inspection)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Remove the instrument panel junction block ASSY from the vehicle. (Refer to )
)(2) Remove the main body ECM (multiplex network body computer) from the instrument panel junction block ASSY.
(3) Measure the resistance between the terminals.
Captions in illustration
| *a |
Connector not connected (Instrument panel junction block ASSY) |
- |
- |
Resistance
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| 3E-1 - MB-9 (ACC) |
Always |
10 kΩ or more |
| 3E-1 - 3B-28 |
Always |
10 kΩ or more |
| 3E-1 - MB-9 (ACC) |
Connect the battery’s positive terminal to the 3A-20 terminal, and the ground terminal to the 3A-12 or the 3A-13 terminal. |
Less than 1 Ω |
| 3E-1 - 3B-28 |
Connect the battery’s positive terminal to the 3A-20 terminal, and the ground terminal to the 3A-12 or the 3A-13 terminal. |
Less than 1 Ω |
NG
>Replacement of the instrument panel junction block ASSY (Refer to )
)OK▼
5.
Inspection of the wiring harness and the connector (instrument panel junction block ASSY - main body ECM (multiplex network body computer))
NOTE:
For inspection procedures and precautions, refer to .
.NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| IG signal circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) is detecting the IG signal.
Circuit figure
Inspection steps
CAUTION:
Before performing the troubleshooting, check the fuse of this circuit.
1.
Reading the current data of the SSM3 (IG SW)
(1) Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to )
)
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Item Name |
Description/display range |
Normal value |
Remarks |
|---|---|---|---|
| [Ignition] |
Status of the IG signal Display range: OFF - ON |
[OFF]: IG OFF [ON]: IG ON |
This item will be displayed as [OFF] in the ACC ON status. |
Criteria
: The normal value on the data monitor is displayed properly.
NG
> Go to Step 2.
OK▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Inspection of the wiring harness and the connector (IG1 NO.1 relay power supply)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connectors 3A and 3E of the instrument panel junction block ASSY.
(2) Measure the voltage between the connector terminals on the vehicle wiring harness side.
(3) Measure the resistance between the connector terminals on the vehicle wiring harness side.
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (instrument panel junction block ASSY connector) |
NG
>Repair or replacement of wiring harness or connector
OK▼
3.
Inspection of the instrument panel junction block ASSY (IG1 NO.1 relay inspection)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Remove the instrument panel junction block ASSY from the vehicle. (Refer to )
)(2) Remove the main body ECM (multiplex network body computer) from the instrument panel junction block ASSY.
NG
>Replacement of the instrument panel junction block ASSY (Refer to )
)OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| Door courtesy light circuit |
|---|
Circuit description
The courtesy light ASSY is controlled to illuminate by the main body ECM (multiplex network body computer).
Circuit figure
Inspection steps
NOTE:
Before performing the troubleshooting, check the fuses and the lights of this circuit.
1.
Performing the SSM3 work support
(1) On the SSM3, navigate to the [System Operation Check Mode] display, and check the computer data. (Refer to )
)
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [D-Door Courtesy Lamp] |
The driver’s side courtesy light is turned on |
OFF/ON |
| [P-Door Courtesy Lamp] |
The passenger’s side courtesy light is turned on |
OFF/ON |
Criteria
: The driver’s and passenger’s side courtesy lights are turned on
Result
| Result |
Go to |
|---|---|
| All items show the normal status. |
A |
| [D-Door Courtesy Lamp] shows an abnormal status. |
B |
| [P-Door Courtesy Lamp] shows an abnormal status. |
C |
B
> Go to Step 2.
C
> Go to Step 5.
A▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Inspection of the wiring harness and the connector (courtesy light ASSY RH - battery)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector F4 of the courtesy light ASSY RH.
NG
>Repair or replacement of wiring harness or connector
OK▼
3.
Unit inspection of the courtesy light ASSY RH
(1) Remove the courtesy light ASSY RH. (Refer to )
)(2) Perform the unit inspection of the courtesy light ASSY RH. (Refer to )
)
Criteria
: The courtesy light ASSY RH illuminates.
NG
>Replacement of the courtesy light ASSY RH (Refer to )
)OK▼
4.
Inspection of the wiring harness and the connector (main body ECM (multiplex network body computer) - courtesy light ASSY RH)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector D5 of the main body ECM (multiplex network body computer).
(2) Disconnect the connector F4 of the courtesy light ASSY RH.
(3) Measure the resistance of the vehicle wiring harness connector.
Resistance
For RHD
| Inspection terminals (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| D5-5 (FRCL) - F4-1 |
Always |
Less than 1 Ω |
| F4-1 - Chassis ground |
Always |
10 kΩ or more |
For LHD
| Inspection terminals (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| D5-6 (FRCL) - F4-1 |
Always |
Less than 1 Ω |
| F4-1 - Chassis ground |
Always |
10 kΩ or more |
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)5.
Inspection of the wiring harness and the connector (courtesy light ASSY LH - battery)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector E2 of the courtesy light ASSY LH.
NG
>Repair or replacement of wiring harness or connector
OK▼
6.
Unit inspection of the courtesy light ASSY LH
(1) Remove the courtesy light ASSY LH. (Refer to )
)(2) Perform the unit inspection of the courtesy light ASSY LH. (Refer to )
)
Criteria
: The courtesy light ASSY LH illuminates.
NG
>Replacement of the courtesy light ASSY LH (Refer to )
)OK▼
7.
Inspection of the wiring harness and the connector (main body ECM (multiplex network body computer) - courtesy light ASSY LH)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector D5 of the main body ECM (multiplex network body computer).
(2) Disconnect the connector E2 of the courtesy light ASSY LH.
(3) Measure the resistance of the vehicle wiring harness connector.
Resistance
For RHD
| Inspection terminals (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| D5-6 (FLCL) - E2-1 |
Always |
Less than 1 Ω |
| E2-1 - chassis ground |
Always |
10 kΩ or more |
For LHD
| Inspection terminals (Terminal symbol) |
Inspection conditions |
Standard value |
|---|---|---|
| D5-5 (FLCL) - E2-1 |
Always |
Less than 1 Ω |
| E2-1 - chassis ground |
Always |
10 kΩ or more |
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| Engine switch illumination circuit |
|---|
Circuit description
The text illumination of the push button start switch is controlled by the smart key computer ASSY (collation ECM).
Circuit figure
Inspection steps
1.
Performing the SSM3 work support (push button start switch)
(1) On the SSM3, navigate to the [System Operation Check Mode] display, and check the computer data. (Refer to )
)
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [Key illumi. Lamp] |
Turn on the text illumination of the push button start switch. |
Stop/output |
Criteria
: The System Operation Inspection Mode is performed properly.
NG
> Go to Step 2.
OK▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Unit inspection of the push button start switch
(1) Remove the push button start switch. (Refer to )
)(2) Perform the unit inspection of the push button start switch. (Refer to )
)
Criteria
: The text illumination turns on.
NG
>Replacement of the push button start switch (Refer to )
)OK▼
3.
Inspection of the wiring harness and the connector (push button start switch - smart key computer ASSY (collation ECM) and chassis ground)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector D25 of the push button start switch.
(2) Disconnect the connector D41 of the smart key computer ASSY (collation ECM).
(3) Measure the resistance between the connector terminals on the vehicle wiring harness side.
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the smart key computer ASSY (collation ECM)
| Door unlock detection switch circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) is receiving the door lock position switch signal from each door.
Circuit figure
Inspection steps
1.
Reading the current data of the SSM3 (door lock position switch)
(1) Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to )
)
Criteria
: The normal value on the data monitor is displayed properly.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Item Name |
Description/display range |
Normal value |
Remarks |
|---|---|---|---|
| [D Door Lock Pos] |
Lock/unlock status of the driver’s side door Display range: [Lock]-[Unlock] |
[Lock]: When the driver’s side door is locked [Unlock]: When the driver’s side door is unlocked |
- |
| [P Door Lock Pos] |
Lock/unlock status of the passenger’s side door Display range: [Lock]-[Unlock] |
[Lock]: When the passenger’s side door is locked [Unlock]: When the passenger’s side door is unlocked |
- |
Result
| Result |
Go to |
|---|---|
| OK |
A |
| NG (The door lock position switch of the driver’s side door does not operate.) |
B |
| NG (The door lock position switch of the passenger’s side door does not operate.) |
C |
B
> Go to Step 2.
C
> Go to Step 4.
A▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Unit inspection of the front door lock ASSY
(1) Remove the front door lock assembly. (for driver side) (Refer to )
)(2) Inspect the front door lock assembly. (for driver side) (Refer to )
)
Criteria
: The inspection result shows the normal status.
NG
>Replace front door lock assembly. (for driver side) (Refer to )
)OK▼
3.
Inspection of the wiring harness and the connector
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector E3 of the front door lock ASSY.
(2) Disconnect the connector D6 of the main body ECM (multiplex network body computer).
(3) Measure the resistance between the connector terminals on the vehicle wiring harness side.
Resistance
For RHD
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| D6-12 (LSFP) - E3-8 (LSSR) |
Always |
Less than 1 Ω |
| E3-7 (E) - chassis ground |
Always |
Less than 1 Ω |
| E3-8 (LSSR) - chassis ground |
Always |
10 kΩ or more |
For LHD
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| D6-11 (LSFD) - F3-7 (LSSR) |
Always |
Less than 1 Ω |
| E3-7 (E) - chassis ground |
Always |
Less than 1 Ω |
| E3-8 (LSSR) - chassis ground |
Always |
10 kΩ or more |
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)4.
Unit inspection of the front door lock ASSY
(1) Remove the front door lock assembly. (for passenger side) (Refer to )
)(2) Inspect the front door lock assembly. (for passenger side) (Refer to )
)
Criteria
: The inspection result shows the normal status.
NG
>Remove the front door lock assembly. (for passenger side) (Refer to )
)OK▼
5.
Inspection of the wiring harness and the connector
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector F3 of the front door lock ASSY.
(2) Disconnect the connector D6 of the main body ECM (multiplex network body computer).
(3) Measure the resistance between the connector terminals on the vehicle wiring harness side.
Resistance
For RHD
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| D6-11 (LSFD) - F3-7 (LSSR) |
Always |
Less than 1 Ω |
| F3-8 (E) - chassis ground |
Always |
Less than 1 Ω |
| F3-7 (LSSR) - chassis ground |
Always |
10 kΩ or more |
For LHD
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| D6-12 (LSFP) - F3-7 (LSSR) |
Always |
Less than 1 Ω |
| F3-8 (E) - chassis ground |
Always |
Less than 1 Ω |
| F3-7 (LSSR) - chassis ground |
Always |
10 kΩ or more |
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| Door Courtesy Switch Circuit |
|---|
DESCRIPTION
The main body ECU (network gateway ECU) detects the condition of the front door courtesy light switch assembly using this circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
1.
READ VALUE USING SSM3
(1) Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to )
)
Criteria
: The normal value on the data monitor is displayed properly.
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
| [D Door Courtesy] |
Driver side door courtesy light switch signal/ON or OFF |
ON: Driver side door closed OFF: Driver side door open |
- |
| [P Door Courtesy] |
Passenger side door courtesy light switch signal/ON or OFF |
ON: Passenger side door closed OFF: Passenger side door open |
- |
Result
| Result |
Proceed to |
|---|---|
| OK |
A |
| Driver side door courtesy light switch or passenger side door courtesy light switch does not operate |
B |
B
> Go to step 2
A▼
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Refer to )
)2.
INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (LH OR RH)
(1) Remove the front door courtesy light switch assembly .(Refer to )
)B
> Go to step 5
C
>REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY.(Refer to )
)OK▼
3.
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
(1) Disconnect the 3B (for RHD) or 3A (for LHD) instrument panel junction block assembly connector.
(2) Disconnect the H21 front door courtesy light switch assembly LH connector.
NG
>REPAIR OR REPLACE HARNESS OR CONNECTOR
OK▼
4.
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(1) Remove the instrument panel junction block assembly .(Refer to )
)(2) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.
(3) Measure the resistance according to the value(s) in the table below. (for RHD)
Text in Illustration
| *a |
Component without harness connected(Instrument Panel Junction Block Assembly) |
- |
- |
NG
>Replacement of the instrument panel junction block ASSY (Refer to )
)OK▼
REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) (Refer to )
)5.
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
(1) Disconnect the 3A (for RHD) or 3B (for LHD) instrument panel junction block assembly connector.
(2) Disconnect the G18 front door courtesy light switch assembly RH connector.
NG
>REPAIR OR REPLACE HARNESS OR CONNECTOR
OK▼
6.
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
(1) Remove the instrument panel junction block assembly (Refer to ).
).(2) Remove the main body ECU (network gateway ECU) from the instrument panel junction block assembly.
NG
>REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (Refer to )
)OK▼
REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) (See page )
)| Trunk courtesy light switch circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) is detecting the courtesy switch signal of the trunk lock ASSY.
Circuit figure
Inspection steps
1.
Reading the current data of the SSM3
(1) Using SSM3, display the [Current Data Display & Save] screen. Check the computer data. (Refer to )
)SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Current Data Display & Save]
| Item Name |
Description/display range |
Normal value |
Remarks |
|---|---|---|---|
| [Luggage Courtesy SW] |
Status of the trunk lock ASSY Display range: [Close]-[Open] |
Close: The trunk is closed. Open: The trunk is open. |
- |
Criteria
: The normal value on the data monitor is displayed properly.
NG
> Go to Step 2.
OK▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Inspection of trunk lock ASSY
(1) Remove the trunk lock ASSY. (Refer to )
)
(2) Check the resistance between the connector terminals.
Captions in illustration
| *a |
Connector not connected (trunk lock ASSY) |
| *b |
Locked |
| *c |
Open |
NG
>Replacement of the trunk lock ASSY (Refer to )
)OK▼
3.
Inspection of the wiring harness and the connector (trunk lock ASSY - instrument panel junction block ASSY and chassis ground)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector 3D of the instrument panel junction block ASSY.
(2) Disconnect the connector J3 of the trunk lock ASSY.
NG
>Repair or replacement of wiring harness or connector
OK▼
4.
Inspection of the instrument panel junction block ASSY.
NOTE:
For inspection procedures and precautions, refer to .
.(1) Remove the instrument panel junction block ASSY from the vehicle. (Refer to )
)(2) Remove the main body ECM (multiplex network body computer) from the instrument panel junction block ASSY.
NG
>Replacement of the instrument panel junction block ASSY (Refer to )
)OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| Interior illumination circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) controls the map light ASSY to illuminate.
Circuit figure
Inspection steps
CAUTION:
Before performing the troubleshooting, check the bulbs and the fuses of this circuit.
1.
Performing the SSM3 work support (map light)
(1) On the SSM3, follow the display to perform [Work Support]. (Refer to )
)
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [Illuminated Entry System] |
The lights controlled by the illuminated entry system are turned on |
OFF/ON |
Criteria
: The work support can be performed properly.
NOTE:
Perform the inspection with the change switch of the map light ASSY set to the DOOR mode.
NG
> Go to Step 2.
OK▼
Perform the circuit test shown on the symptom table. (Refer to )
)2.
Unit inspection of the map light ASSY
(1) Remove the map light ASSY. (Refer to )
)(2) Perform the unit inspection of the map light ASSY. (Refer to )
)NG
>Replacement of the map light ASSY (Refer to )
)OK▼
3.
Inspection of the wiring harness and the connector (map light ASSY - battery)
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector K3 of the map light ASSY.
(2) Measure the voltage between the connector terminals on the vehicle wiring harness side.
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (map light ASSY connector) |
NG
>Repair or replacement of wiring harness or connector
OK▼
4.
Inspection of the wiring harness and the connector (map light ASSY - main body ECM (multiplex network body computer))
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector K3 of the map light ASSY.
(2) Disconnect the connector D5 of the main body ECM (multiplex network body computer).
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)| Ignition key cylinder light circuit |
|---|
Circuit description
The main body ECM (multiplex network body computer) controls the transponder key amplifier (key cylinder light) to illuminate.
Circuit figure
Inspection steps
CAUTION:
Before performing the troubleshooting, check the fuses and the lights of this circuit.
1.
Performing the SSM3 work support
(1) On the SSM3, navigate to the [Work Support] display, and check the computer data. (Refer to )
)
SSM3 screen: [Each System Check]→ [Integ. unit mode]→ [Work Support]→ [System Operation Check Mode]
| Item Name |
Item description |
Drive |
|---|---|---|
| [Key illumi. Lamp] |
Turn on the key cylinder light. |
ON/OFF |
Criteria
: The work support can be performed properly.
NG
> Go to Step 2.
OK▼
See the next circuit for inspection shown on the symptom table. (Refer to )
)2.
Unit inspection of the transponder key amplifier
(1) Remove the transponder key amplifier. (Refer to )
)
(2) Check that the transponder key amplifier light illuminates.
Captions in illustration
| *a |
Connector not connected (transponder key amplifier) |
NG
>Replacement of the transponder key amplifier (Refer to )
)OK▼
3.
Inspection of the wiring harness and the connector (transponder key amplifier - battery)
NOTE:
For inspection procedures and precautions, refer to .
.
(1) Disconnect the connector D54 of the transponder key amplifier.
(2) Measure the voltage between the connector terminals on the vehicle wiring harness side.
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (transponder key amplifier connector) |
NG
>Repair or replacement of wiring harness or connector
OK▼
4.
Inspection of the wiring harness and the connector (transponder key amplifier - main body ECM (multiplex network body computer))
NOTE:
For inspection procedures and precautions, refer to .
.(1) Disconnect the connector D54 of the transponder key amplifier.
(2) Disconnect the connector D5 of the main body ECM (multiplex network body computer).
NG
>Repair or replacement of wiring harness or connector
OK▼
Replacement of the main body ECM (multiplex network body computer) (Refer to )
)