Wireless door lock control system (without entry & start system)
Precautions Parts location System information Troubleshooting Diagnostic trouble codes Circuit diagnosis Removal / installation
DOOR LOCK
WIRELESS DOOR LOCK CONTROL SYSTEM (WITHOUT ENTRY & START SYSTEM)
PARTS LOCATION
SYSTEM DIAGRAM
DESCRIPTION OF FUNCTIONS
1. Details of wireless door control system
(1) This system locks and unlocks doors by remote control. The wireless control system has the following functions.
·The door control receiver execute code collation and the main body ECM (multiplex network body computer) operates the door lock control. For the communication, a serial data link is provided between the receiver and the main body ECM (multiplex network body ECM).
·A key integrated transmitter with the following switches is used: door lock switch, door unlock switch, and trunk open switch.
·A key integrated transmitter with the following switches is used: door lock switch, door unlock switch, and trunk open switch.
2. Functions of the main parts
| Components |
Function |
|---|---|
| Door control transmitter |
·It is fitted with the lock, unlock, and trunk open. ·It transmits low power radio wave signals (recognition code and function code) to the door control receiver. |
| Door control receiver |
It receives low power radio wave signals from the door control transmitter and transmits them to the main body ECM (multiplex network body computer). |
·Front door courtesy light switch LH/RH ·Trunk courtesy light switch |
·It illuminates while the door is open and turns off while the door is closed. ·It detects a door state signal (open or close) and outputs the data to the main body ECM (multiplex network body computer). |
·Front door lock ASSY LH ·Front door lock ASSY RH |
·An integrated motor locks and unlocks the door. ·It transmits the door lock position of each door to the main body ECM (multiplex network body computer). |
| Main body ECM (multiplex network body ECM) |
It transmits wireless door lock control signals in response to the code data of the door control receiver or the signals from each ECM. |
3. System functions
(1) The door control transmitter has the lock switch and unlock switch. By operating these switches, the driver can operate each function. The wireless door lock control system has the following functions.
NOTE:
The initial setting status of the following functions are set to ON. Some of these functions are customizable.
| Function |
Procedures |
|---|---|
| All door lock function |
When the lock switch is pressed, all doors are locked. |
| All door unlock function (unlock 2 operation) |
The driver’s door is unlocked and then all other doors are unlocked when the unlock switch is pressed twice within 5 seconds. |
| Trunk open function |
When the trunk open switch of the door control transmitter module set SUB ASSY is held down for 0.8 second or more, the trunk opens. |
| Answer-back function (hazard warning light) |
It reports the completion of operation by flashing the hazard warning light once when the door is locked or twice when the door is unlocked. |
| Auto lock function |
If no door is opened within 30 seconds after the doors are unlocked using the wireless transmitter, all doors are locked automatically. |
| Illumination function |
When the unlock switch is pressed with all doors locked, the room light illuminates simultaneously with the unlock operation. |
| Self diagnosis function |
In the following conditions, the system transfers to the self diagnosis mode. ·When the door control receiver receives normal radio wave signals from the door control transmitter while the system is in the self diagnosis mode, the room light blinks in a pattern corresponding to each switch. |
| Transmitter identification code registration function |
4 transmitter identification codes can be registered (written and saved) in the EEPROM integrated in the door control receiver. |
4. Transmitter identification code registration function
(1) The following table indicates the four ID registration function modes that allow six different types of codes to be registered. The codes are registered electronically in EEPROM inside the door control receiver (saved after written).
| Mode |
Function |
|---|---|
| Keyless ID additional registration |
Adds a newly received code while maintaining the previously registered codes. This mode is used to add a new transmitter. If the number of registered codes exceeds 7, the oldest one of the existing registered codes is erased. |
| Keyless ID rewrite |
Erase the existing registered codes and registers new input codes only. |
| Readout the number of keyless ID registration |
Checks how many codes are registered. When adding a new code, you can check how many codes are already saved using this mode. |
5. Conditions for disabling wireless functions
(1) The lock function does not operate if either of the following conditions is met.
·Any door is open.
·Key is inserted in ignition key cylinder.
·Key is inserted in ignition key cylinder.
(2) The unlock function does not operate if the following condition is met.
·Key is inserted in ignition key cylinder.
HOW TO TROUBLESHOOT
NOTE:
·The troubleshooting procedure for the wireless door lock control system assumes that the power door lock control system is functioning normally. Before performing the troubleshooting procedure for the wireless door lock control system, confirm that the power door lock control system is functioning normally.
·Using the following procedures, perform the wireless door lock control system troubleshooting.
·*: Use the SSM3.
·Using the following procedures, perform the wireless door lock control system troubleshooting.
·*: Use the SSM3.
1.
Bring in the car
Next▼
2.
Check battery voltage
(1) Inspect the battery voltage.
Standard voltage
: 11 to 14 V
If the voltage is 11 V or less, charge or replace the battery before proceeding to a next step.Next▼
3.
Check CAN communication system function *
(1) Check CAN communication system. (Refer to 
)
)Result
| Result |
Go to |
|---|---|
| Functioning properly |
A |
| Not functioning properly |
B |
B
>To CAN communication system (How to troubleshoot) (Refer to )
)A▼
4.
Symptom table
Result
| Result |
Go to |
|---|---|
| Troubles not indicated in symptom table |
A |
| Troubles indicated in symptom table |
B |
B
>Go to Step 6.
A▼
5.
General analysis and troubleshooting *
(1) ECM terminals (Refer to )
)(2) [Current Data Display & Save] / [System Operation Check Mode] (Refer to )
)(3) Operation check (Refer to )
)Next▼
6.
Repair or replace
NOTE:
If the door control transmitter or door control receiver is replaced, register the collation code.
Next▼
7.
Confirmation test
Next▼
Complete
OPERATION CHECK
1. Functions and operation status
(1) The wireless door lock control function operates only when the following four conditions are met.
(a) Key is not inserted in ignition key cylinder.
(b) Power door lock system is operating normally.
(c) Function is not disabled by customization.
(d) All doors are closed. (Excluding unlock)
NOTE:
The unlock function operates even when a door is open.
(2) The operation range varies depending on the situation.
(a) The operation area varies depending on the user, how the transmitter is held, and the position.
(b) In some places, the operation area is reduced due to the vehicle shape or surrounding environment.
(c) The low power radio wave signals of the transmitter may be affected by surrounding noises or other strong radio waves. The operation area of the transmitter may be shortened or the transmitter may not work.
(d) If the battery charge lowers, the operation area may be reduced or the transmitter may not function.
NOTE:
If the transmitter is left under direct sunlight for a long time, for example, being left on the meter panel, the battery charge level may decrease or other troubles may occur.
2. Inspecting wireless door lock control function
NOTE:
·The switches indicated below transmit signals. They are integrated in the door control transmitter.
·Pay attention to the operation area of the transmitter during inspection.
·Pay attention to the operation area of the transmitter during inspection.
(1) Check that the vehicle wireless function is in an operable state. (Refer above)
(2) Inspect the basic functions.
(a) Check that all doors are locked when the lock switch is pressed.
(b) Check that the driver’s door is unlocked when the unlock switch is pressed once and all other doors are unlocked when the switch is pressed twice within 5 seconds.
(c) Check that the trunk opens when the trunk open switch is held down for 0.8 second or more.
(3) Check the chattering prevention function.
(a) Check that the relevant operation takes place once only when the switch is pressed. Check that the relevant operation takes place once only, not consecutively, when the switch is pressed. Check that the relevant operation takes place once whenever the switch is pressed at 1 second intervals.
(4) Check the auto lock function.
(a) Check that all doors are automatically locked if no door is opened or locked within 30 seconds after all doors are unlocked by pressing the unlock switch.
(5) Check the switch operation false recognition prevention function.
(a) Check that doors are not locked by a lock switch when the key is set in the ignition cylinder. The above does not apply if the system is in the recognition code registration mode.
(6) Check the answer-back function (hazard warning lights flashing).
(a) Check that the hazard warning light flashes once and all doors are locked when the lock switch is pressed.
(b) Check that the hazard warning light flashes twice and all doors are unlocked when the unlock switch is pressed.
(7) Check the answer-back (wireless door lock buzzer) function. (With wireless door lock buzzer answer-back function)
(a) Check that the buzzer sounds once and all doors are locked simultaneously when the lock switch is pressed.
(b) Check that the buzzer sounds twice and the driver’s door is unlocked simultaneously when the unlock switch is pressed.
(8) Check the entry illumination function.
(a) Check that the map light illuminates (if the light switch is set to the door position) and all doors are unlocked when the unlock switch is pressed with all doors locked.
CUSTOMIZE FUNCTION
1. Customization of wireless door lock control system
(1) Customization via SSM3
CAUTION:
·When a customer requests a function change, check if the function is customizable.
·Before starting customization, record the current settings.
·Before performing the troubleshooting procedure for a function, check that the function is set to the initial settings.
·Before starting customization, record the current settings.
·Before performing the troubleshooting procedure for a function, check that the function is set to the initial settings.
NOTE:
Some items may not be displayed depending on the destination and equipment.
(a) Connect the SSM3 to the DLC3.
(b) Turn IG SW to ON.
(c) Turn on the SSM3.
(d) Enter the following menus. [Integ. unit mode]→[Unit customizing]
(e) Referring to the table below, perform settings.
Wireless door lock
| Display |
Initial setting |
Function |
Setting |
Controller ECM |
|---|---|---|---|---|
| [Keyless Control] |
Yes |
Settings for the function that allows you to select to lock the door via operation of the electrical key transmitter SUB-ASSY |
YES or NO |
Main body ECM (multiplex network body ECM) |
| [Hazard Answer Back] |
ON |
When the wireless lock switch of the transmitter is pressed, all hazard warning lights are illuminated simultaneously. All hazard warning lights illuminate twice when the unlock switch is pressed. |
OFF or ON |
Main body ECM (multiplex network body ECM) |
| [Unlocking operation] |
Yes |
Setting for the function where all doors are unlocked when the electrical key transmitter SUB-ASSY (Electronic key) is operated twice |
OFF or ON |
Main body ECM (multiplex network body ECM) |
| [Auto Lock Time] |
30 second |
Time from unlock to relock using wireless door lock function |
30 seconds, 60 seconds, 120 seconds |
Main body ECM (multiplex network body ECM) |
| [Trunk lid unlocking operation] |
Long press(short) |
Setting for the method of operation when opening the trunk with the electrical key transmitter SUB-ASSY (Electronic key). |
Push and hold (long)/One short Push/Two short Pushes/Push and hold (short) |
Main body ECM (multiplex network body ECM) |
SYMPTOM TABLE
NOTE:
·Use the following table to identify the cause of the symptom. If multiple areas are listed as the causes, they are indicated in the [Faulty part] column according to the order of probability of causing the symptom. Check the possible causal areas in the list order and confirm each symptom. Replace faulty parts as necessary.
·Before inspecting the areas listed in “Possible cause” below, check the fuses and the relays related to this system.
·Before inspecting the areas listed in “Possible cause” below, check the fuses and the relays related to this system.
Wireless door lock control
| Symptoms |
Faulty part |
Reference pages |
|---|---|---|
| Only wireless control function does not work |
Proceed to “Only wireless control function does not work” |
|
| Only answer-back function does not operate properly |
Refer to “No answer-back” |
|
| Auto lock function does not operate properly |
Perform operation check |
|
| Wiring harness or connector |
- |
|
| Unlock warning switch circuit |
|
|
| Door courtesy light switch circuit |
|
|
| Main body ECM (multiplex network body ECM) |
- |
|
| Instrument panel junction block ASSY |
- |
|
| Illumination entry function does not operate |
Perform operation check |
|
| Wiring harness or connector |
- |
|
| Lighting system |
|
|
| Main body ECM (multiplex network body ECM) |
- |
|
| Instrument panel junction block ASSY |
- |
|
| Only door open warning function does not operate |
Perform operation check |
|
| Door courtesy light switch circuit |
|
|
| Main body ECM (multiplex network body ECM) |
- |
|
| Instrument panel junction block ASSY |
- |
|
| Only trunk open function does not operate |
Perform operation check |
|
| Wiring harness or connector |
- |
|
| Door control transmitter module set SUB ASSY |
|
|
| Main body ECM (multiplex network body ECM) |
- |
ECM TERMINAL ARRANGEMENT
1. Check the instrument panel junction block ASSY and main body ECM (multiplex network body ECM).
Captions in illustration
| *1 |
Instrument panel junction block ASSY |
*2 |
Main body ECM (multiplex network body ECM) |
(1) Remove the main body ECM (multiplex network body ECM) from the instrument panel junction block ASSY.
(2) Disconnect the connector D5, D6, and A73 of the main body ECM (multiplex network body ECM).
(3) Measure the resistance and voltage at the terminals between the wiring harness side connector and a chassis ground.
| Terminal No. (symbol) |
Terminal description |
Conditions |
Specified condition |
|---|---|---|---|
| MB-1 - chassis ground |
Battery power supply |
Always |
11 to 14 V |
| MB-8 - chassis ground |
IG SW power supply |
IG SW ON |
11 to 14 V |
| IG SW OFF |
1 V or less |
||
| MB-9 - chassis ground |
ACC power supply |
IG SW ACC |
11 to 14 V |
| IG SW OFF |
1 V or less |
||
| MB-11 - chassis ground |
Ground |
Always |
1 Ω or less |
| MB-32 - chassis ground |
Battery power supply |
Always |
11 to 14 V |
| D5-22 - chassis ground |
Unlock warning switch input |
Key is not inserted in ignition key cylinder (OFF) |
1 V or less |
| Key is inserted to the ignition key cylinder (ON). |
11 to 14 V |
||
| D6-1 - Chassis ground |
Ground |
Always |
1 Ω or less |
| A73-4 - chassis ground |
Ground |
Always |
1 Ω or less |
(4) Reconnect the connector D5, D6, and A73 of the main body ECM (multiplex network body ECM).
(5) Install the main body ECM (multiplex network body ECM) to the instrument panel junction block ASSY.
(6) Measure the voltages and resistances according to the values indicated in the table below.
| Terminal No. (symbol) |
Terminal description |
Conditions |
Specified condition |
|---|---|---|---|
| 3A-28 - chassis ground |
Driver’s side courtesy light switch |
Driver’s door is open. |
1 V or less |
| Driver’s door is closed |
Pulse generation |
||
| 3B-13 - chassis ground |
Passenger’s side courtesy light switch |
The passenger’s door is open. |
1 V or less |
| The passenger’s door is closed. |
Pulse generation |
||
| 3D-26 - chassis ground |
Trunk courtesy light switch |
The trunk is open. |
1 V or less |
| The trunk is closed. |
11 to 14 V |
||
| 3B-2 - chassis ground |
Door lock motor lock drive output (driver’s side) |
Door control switch is not pressed |
1 V or less |
| Lock side of door control switch is not pressed |
11 to 14 V |
||
| 3B-3 - chassis ground |
Door lock motor lock drive output (passenger’s side) |
Door control switch is not pressed |
1 V or less |
| Lock side of door control switch is not pressed |
11 to 14 V |
||
| 3D-11 - chassis ground |
Door lock motor unlock drive output (driver’s side) |
Door control switch is not pressed |
1 V or less |
| Unlock side of door control switch is not pressed |
11 to 14 V |
||
| 3B-4 - chassis ground |
Door lock motor unlock drive output (passenger’s side) |
Door control switch is not pressed |
1 V or less |
| Unlock side of door control switch is not pressed |
11 to 14 V |
||
| A73-1 - chassis ground |
Wireless door lock buzzer signal |
Wireless door lock buzzer OFF |
1 V or less |
| Wireless door lock buzzer ON |
Pulse generation |
||
| D6-6 - Chassis ground |
Output signals to door control receiver |
Key is inserted in ignition key cylinder → Key is removed from ignition key cylinder |
11 to 14 V → Pulse generation → 11 to 14 V |
| D6-7 - Chassis ground |
Input signals from door control receiver |
Ignition switch is OFF, all doors are closed, no transmitter switch is pressed |
11 to 14 V |
| Ignition switch is OFF, all doors are closed, transmitter switch is pressed |
Pulse generation |
2. CHECK DOOR CONTROL RECEIVER
(1) Disconnect the H27 door control receiver connector.
(2) Measure the resistance and voltage according to the value(s) in the table below.
| Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
| H27-5 - Body ground |
Battery power supply |
Always |
11 to 14 V |
| H27-1 - Body ground |
Ground |
Always |
Below 1Ω |
(3) Reconnect the H27 door control receiver connector.
(4) Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
| H27-3 - Body ground |
Signal input from main body ECU (multiplex network body ECU) |
Key inserted in ignition key cylinder → Key pulled out of ignition key cylinder |
11 to 14 V → Pulse generation → 11 to 14 V |
| H27-2 - Body ground |
Signal output to main body ECU (multiplex network body ECU) |
Ignition switch off, all doors closed and door control transmitter switch not pressed |
11 to 14 V |
| Ignition switch off, all doors closed and door control transmitter switch pressed |
Pulse generation |
CHECKING / CLEARING DIAGNOSTIC CODES
1. DTC check
(1) Check DTC
(a) Connect the SSM3 to the DLC3.
(b) Turn IG SW to ON.
(c) Turn on the SSM3.
(d) Enter the following menus. [Integ. unit mode] → [Diagnostic Code(s) Display]
(e) Check the DTC.
(2) Clear DTC
(a) Connect the SSM3 to the DLC3.
(b) Turn IG SW to ON.
(c) Turn on the SSM3.
(d) Enter the following menus: [Integ. unit mode] → [Clear Memory]
(e) Clear DTC according to the following instructions displayed on the SSM3 screen.
CURRENT DATA DISPLAY & SAVE / SYSTEM OPERATION CHECK MODE
1. Read data list
CAUTION:
The values indicated under the normal conditions in the table below are informative values. Do not depend on reference value only when judging if the part is faulty.
NOTE:
By using the SSM3 for reading the data list, it is able to read the values and the status of the switches, sensors, or actuators without removing these parts. This inspection is very useful because it allows an operator to read any intermittent conditions or signals without disturbing parts or wiring. By reading the current data display & save information at an initial phase of troubleshooting, you can save time for diagnosis.
(1) Connect the SSM3 to the DLC3.
(2) Turn IG SW to ON.
(3) Turn on the SSM3.
(4) Enter the following menus. [Integ. unit mode] → [Current Data Display & Save]
(5) Using SSM3, read the data list according to the screen displays.
Main body ECM
| Tester display |
Measurement items / range |
Normal condition |
Notes for diagnosis |
|---|---|---|---|
| [D Door Courtesy] |
Driver’s door courtesy light switch signal / ON or OFF |
ON: Driver’s door is closed OFF: Driver’s door is open |
- |
| [P Door Courtesy] |
Passenger’s door courtesy light switch signal / ON or OFF |
ON: Passenger’s door is closed OFF: Passenger’s door is open |
- |
| [Luggage Courtesy SW] |
Trunk courtesy switch signal / OFF or ON |
ON: Trunk is open OFF: Trunk is closed |
- |
| [Ignition] |
Ignition switch IG signal / ON or OFF |
ON:IG SW ON OFF:IG SW OFF |
- |
| [ACC SW] |
Ignition switch ACC signal / ON or OFF |
ON:IG SW ACC OFF:IG SW OFF |
- |
| [Key Unlock Warning SW] |
Unlock warning switch / OFF or ON |
OFF: Ignition key is not inserted ON: Ignition key is inserted |
- |
| [Keyless Control] |
YES or NO |
Customized setting display |
- |
| [Hazard Answer Back] |
Wireless hazard answer-back / OFF or ON |
Customized setting display |
- |
| [Unlocking operation] |
YES or NO |
Customized setting display |
- |
| [Auto Lock Time] |
Auto look time /30 seconds, 60 seconds, 120 seconds |
Customized setting display |
- |
| [Trunk lid unlocking operation] |
Push and hold (long)/One short push/Two short Pushes/Push and hold (short) |
Customized setting display |
- |
| [Wireless Buzzer Volume] |
Wireless door lock buzzer vol/ Level7, Level6, Level5, Level4, Level3, Level2, Level1, or Level0 |
Customized setting display |
- |
2. Perform system operation check mode
NOTE:
If SSM3 is used for executing the system operation check mode, the relays, VSV, actuators and other components can be operated without removing parts. This functional inspection method is very useful because it helps check state-related signals and identify the faulty part without removing any parts and wiring. By performing active tests at an initial phase of troubleshooting, you can save time for diagnosis. The current data display & save information can be displayed during system operation check mode.
(1) Connect the SSM3 to the DLC3.
(2) Turn IG SW to ON.
(3) Turn on the SSM3.
(4) Enter the following menus. [Integ. unit mode] → [Work Support]→[System Operation Check Mode]
(5) Execute the system operation check mode according to the SSM3 display.
Main body
| Tester display |
Tested parts |
Control range |
Notes for diagnosis |
|---|---|---|---|
| [Door Lock] |
Door lock motor |
Lock/Unlock |
- |
| [D-Door Unlock] |
Driver’s door lock motor |
OFF/ON |
- |
| [Trunk and Back-Door Open] |
Trunk lock motor |
OFF/ON |
- |
| [Illuminated Entry System] |
Room light (room light switch is set to door position and all doors are closed) |
OFF/ON |
- |
| [Keyless Buzzer Output] |
Wireless door lock buzzer |
OFF/ON |
- |
LIST OF DIAGNOSTIC CODES
| DTC | B1242 | Malfunctions in wireless tuner system |
|---|
Circuit description
The door control receiver receives signals from the door control transmitter and transmits them to the main body ECM (network gateway computer) by solid line. The main body ECM (network gateway computer) transmits the door lock and unlock signals to each door lock actuator to control them.
| DTC NO. |
DTC detecting condition |
Inspection parts |
|---|---|---|
| B1242 |
If, after the main body ECM (network gateway computer) outputs a PRG signal in the self diagnosis mode, the corresponding RDA signal cannot be received within 1 second |
·Door control receiver ·Main body ECM (network gateway computer) ·Wiring harness or connector |
Circuit figure
Inspection steps
CAUTION:
Before performing the troubleshooting, check the fuse of this circuit.
1.
Inspection of wiring harness and connector (Door control receiver - Main body ECM (network gateway computer))
(1) Disconnect the door control receiver connector H27.
(2) Disconnect the connector D6 for the main body ECM (network gateway computer).
NG
>Repair or replacement of wiring harness or connector
OK▼
2.
Door control receiver inspection (power, GND)
(1) Measure the voltage and resistance between terminals.
Voltage
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| H27-5 (+B) - Chassis ground |
Always |
11 to 14 V |
Resistance
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| H27-1 (GND) - Chassis ground |
Always |
Less than 1 Ω |
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (Door control receiver connector) |
NG
>Repair or replacement of wiring harness or connector
OK▼
3.
Replacement with normal door control receiver
(1) Replace with a new or normal door control receiver. (Refer to )
)Next▼
4.
Identification code registration
(1) Register the identification code to the door control receiver. (Refer to )
)Next▼
5.
Clear diagnostic code
(1) Clear the diagnostic code using the SSM3. (Refer to )
)Next▼
6.
Do a DTC check again.
(1) Check DTC using SSM3. (Refer to )
)
Criteria
: B1242 is not output
NG
>Replacement of the main body ECM (network gateway computer) (Refer to )
)OK▼
Complete (door control receiver trouble)
| Only wireless function does not work |
|---|
Circuit description
The door control receiver receives signals from the transmitter and transmits them to the main body ECM (multiplex network body computer). The main body ECM (multiplex network body computer) controls all doors by transmitting lock and unlock signals to each door.
Circuit figure
Inspection steps
CAUTION:
Before performing the following inspection steps, check the fuses related to this system.
1.
Check the power door lock operation.
(1) Check if the locked door is unlocked when operating the door control switch of the power window regulator master switch ASSY. (Refer to )
)
Criteria
: Locked door is unlocked
NG
>Refer to the power door lock control system (refer to )
)OK▼
2.
Inspection of key warning system
(1) Check that the key warning buzzer operates properly. (Refer to )
)
Criteria
: The key warning buzzer operates properly
NG
>To key warning system (Refer to )
)OK▼
3.
Transfer to self diagnosis mode
(1) Transfer to the self diagnosis mode by operating the ignition key cylinder.
(a) Insert the key in the ignition key cylinder and remove it.
(b) Insert the key in the ignition key cylinder within 5 seconds after removing it, and turn the ignition switch from ON to OFF once. (End at OFF)
(c) Within 30 seconds after turning the ignition switch to OFF, perform the following step nine times: Turn ignition switch to ON, then OFF. (End at OFF)
(d) Enter the following menus: Body / Main Body / Utility / Wireless Door Lock Diagnosis Mode
CAUTION:
If the transfer to self diagnosis mode fails, the system returns to the normal mode.
NOTE:
After finishing the above operation, turn the ignition switch to ON. The self diagnosis mode ends.
(2) Confirm that the system has transferred to the self diagnosis mode by checking the room light output pattern.
(3) Confirm that the system has transferred to the self diagnosis mode by checking the wireless door lock buzzer output pattern.
Criteria
: The blinking pattern is the same as the illustration to the left
Next▼
4.
Check in self diagnosis mode
(1) Check the diagnosis output when a switch of the door control transmitter module set SUB-ASSY is pressed. The diagnosis output can be checked by the room light and wireless door lock buzzer pattern.
Result
| Result |
Go to |
|---|---|
| The normal patterns (light blinking pattern and buzzer sounding pattern) are output. |
A |
| Nonconforming recognition code is output. |
B |
| No diagnosis output |
C |
B
>Go to Step 5.
C
>Go to Step 6.
A▼
Replacement of the main body ECM (multiplex network body ECM)
5.
Register the recognition code
(1) Confirm that the system can transfer to the rewrite mode or addition mode and a recognition code can be registered.
Criteria
: Recognition code can be registered
NG
>Replace the transmitter SUB ASSY module set door control
OK▼
Complete
6.
Checking response of door control receiver
(1) Procure a door control transmitter from another vehicle.
(2) Press and hold the door control transmitter switch.
(3) Confirm that a nonconforming recognition code is output.
Criteria
: Nonconforming recognition code is output.
NG
>Go to Step 10.
OK▼
7.
Performing unit inspection of transmitter battery (voltage)
(1) Remove the battery from the inoperative door control transmitter module. Attach a lead wire (0.6 mm {0.0236 in} or less including insulator) to the negative terminal using an adhesive tape. (Refer to )
)
CAUTION:
Do not wind the lead wire around the terminal. Instead, put it into a gap on the terminal or solder it. If you wind the lead wire around the terminal, the terminal may be deformed or damaged, and the battery may no longer fit into the transmitter.
Captions in illustration
| *1 |
Lead wire |
(2) Carefully pull the lead wire out from the position shown in the figure, and insert the previously removed transmitter battery.
CAUTION:
When replacing the transmitter battery, it is necessary to remove any static electricity charged in your body before starting the work. A recommendable method for preventing damage to the door control transmitter is to touch the vehicle body.
NG
>Go to Step 8.
OK▼
Replace the transmitter SUB ASSY module set door control (Refer to )
)8.
Replacing transmitter battery
Replace the transmitter battery. (Refer to )
)Next▼
9.
Check in self diagnosis mode
(1) Check the diagnosis output when a switch of the door control transmitter module set SUB-ASSY is pressed. The diagnosis output can be checked by the room light blinking pattern and wireless door lock buzzer pattern.
Result
| Result |
Go to |
|---|---|
| The normal patterns (light blinking pattern and buzzer sounding pattern) are output. |
A |
| Nonconforming recognition code is output. |
B |
| No diagnosis output |
B
>Replace the transmitter SUB ASSY module set door control
A▼
Complete (transmitter battery trouble)
10.
Checking radio wave environment
(1) Bring the door control transmitter close to the door control receiver and check the wireless operations.
Criteria
: The wireless function operates properly.
NOTE:
·When the transmitter is brought close to the door control receiver, the possibility of radio disturbance is lowered. This offers an opportunity to determine if the symptom is caused by radio disturbance.
·If the symptom occurs only in a particular place or time zone, it is possible that the symptom is caused by radio disturbance. In addition, installing an additional component to the vehicle makes the vehicle more susceptible to interference from external radio waves. If such components are found, remove them, and then proceed to check the operation.
·If the symptom occurs only in a particular place or time zone, it is possible that the symptom is caused by radio disturbance. In addition, installing an additional component to the vehicle makes the vehicle more susceptible to interference from external radio waves. If such components are found, remove them, and then proceed to check the operation.
NG
>Interference from external radio waves
OK▼
11.
Inspecting door control receiver (power, ground)
(1) Disconnect the door control receiver connector H28.
(2) Measure the resistance and voltage based on the following table.
Voltage
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| H28-7 - Chassis ground |
Always |
11 to 14 V |
Resistance
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| H28-12 - Chassis ground |
Always |
1 Ω or less |
Captions in illustration
| *a |
Front side of vehicle wiring harness connector (To door control receiver) |
NG
>Repair or replacement of wiring harness or connector
OK▼
12.
Inspecting door control receiver (output)
(1) Reconnect the door control receiver connector H28.
(2) Measure the voltage according to the following table.
Voltage
| Inspection terminals |
Inspection conditions |
Standard value |
|---|---|---|
| H28-4 - Chassis ground |
Ignition switch is OFF, all doors are closed, door control transmitter switch is OFF |
11 to 14 V |
| Ignition switch is OFF, all doors are closed, door control transmitter switch is ON |
Pulse generation |
Captions in illustration
| *a |
Connector connected (Door control receiver) |
NG
>Door control receiver replacement (Refer to )
)OK▼
13.
Inspecting wiring harness and connector (main body ECM - door control receiver)
(1) Disconnect the main body ECM (multiplex network body computer) connector D6.
(2) Disconnect the door control receiver connector H28.
NG
>Repair or replacement of wiring harness or connector
OK▼
14.
Replacing the door control receiver
(1) Temporarily replace the door control receiver with a new or normally functioning one. (Refer to )
)Next▼
15.
Register the recognition code
(1) Execute the registration procedure. (Refer to )
)Next▼
16.
Inspecting door control receiver (operation)
(1) Check that doors are locked and unlocked using the lock and unlock switches of the transmitter.
Criteria
: Doors can be locked and unlocked by transmitter.
NG
>Replace the main body ECM (multiplex network body ECM)
OK▼
Complete (door control receiver trouble)
| Answer-back function does not work |
|---|
Circuit description
In some cases, the hazard warning light and/or the wireless door lock buzzer answer-back function * may not operate even though the wireless door lock control function is normal. In such a case, there may be a fault in the hazard warning light and the wireless door lock buzzer signal output of the main body ECM (multiplex network body ECM).
Circuit figure
Inspection steps
1.
Reading values with SSM3 (answer-back operation)
(1) Connect the SSM3 to the DLC3.
(2) Turn IG SW to ON.
(3) Turn on the SSM3.
(4) Enter the following menus. [Integ. unit mode]→[Unit customizing]
(5) Referring to the table below, perform settings.
| Display |
Initial setting |
Contents |
Setting |
Controller ECM |
|---|---|---|---|---|
| [Hazard Answer Back] |
ON |
When a door is locked by wireless operation, the hazard warning lights flash once. When a door is unlocked by wireless operation, the hazard warning lights flash twice. |
OFF or ON |
Main body ECM (multiplex network body ECM) |
| [Wireless Buzzer Resp] |
ON |
Wireless door lock buzzer response |
OFF or ON |
Main body ECM (multiplex network body ECM) |
| [Wireless Buzzer Volume] |
Level 5 |
Wireless door lock buzzer volume |
Level 7, Level 6, Level 5,Level 4, Level 3, Level 2, Level 1, or Level 0 |
Main body ECM (multiplex network body ECM) |
B
>Execute the customize function.
A▼
2.
Inspecting wireless door lock control function
B
>Go to “Symptom table” (refer to ).
).A▼
3.
Checking wireless answer-back operation
B
>Go to Step 8.
A▼
4.
Executing system operation check mode with SSM3 (wireless door lock buzzer)
(1) Connect the SSM3 to the DLC3.
(2) Turn IG SW to ON.
(3) Turn on the SSM3.
(4) Enter the following menus. [Integ. unit mode] → [Work Support]→[System Operation Check Mode]
B
>Replacement of the main body ECM (multiplex network body ECM)
A▼
5.
Inspecting wiring harness and connector (wireless door lock buzzer - main body ECM)
(1) Disconnect the wireless door lock buzzer connector A63.
(2) Disconnect the connector A73 of the main body ECM (multiplex network body ECM).
NG
>Repair or replacement of wiring harness or connector
OK▼
6.
Replacing wireless door lock buzzer
(1) Temporarily replace the wireless door lock buzzer with a new one. (Refer to )
)Next▼
7.
Checking wireless door lock buzzer operation
(1) Check the wireless answer-back function operation.
Criteria
: The wireless answer-back function operates properly
NG
>Replacement of the main body ECM (multiplex network body ECM)
OK▼
Complete (Wireless door lock buzzer is faulty)
8.
Hazard warning light operation
(1) Check that the hazard warning light blinks when the hazard warning switch is pressed.
Criteria
: Hazard warning light signal is normal
NG
>Refer to the lighting system (Symptom table)
OK▼
Replacement of the main body ECM (multiplex network body ECM)