Subaru BRZ 2013 · Service Manual Interior body & electrical

Wireless door lock control system (with entry & start system)

Precautions Parts location System information Troubleshooting Diagnostic trouble codes Circuit diagnosis Removal / installation

DOOR LOCK
WIRELESS DOOR LOCK CONTROL SYSTEM (WITH ENTRY & START SYSTEM)
PRECAUTIONS
1. Precautions for each function
(1) Precautions for electrical key transmitter SUB-ASSY
The electrical key transmitter SUB-ASSY is a delicate device.
Observe the following precautions in handling the electrical key transmitter SUB-ASSY:
(a) Do not drop or hit the electrical key transmitter SUB-ASSY.
(b) Do not leave the electrical key transmitter SUB-ASSY in high-temperature locations for a prolonged period of time.
(c) Do not wash the electrical key transmitter SUB-ASSY in an ultrasound bath.
(d) Keep the electrical key transmitter SUB-ASSY away from magnets and magnetized objects.
(e) Do not apply a sticker or the like on the electrical key transmitter SUB-ASSY.
PARTS LOCATION
DESCRIPTION OF FUNCTIONS
1. Wireless door lock control system
(1) The wireless door lock control system can be used to lock and unlock all doors from a distant position. This system is controlled by transmitting radio wave signals from the electrical key transmitter SUB-ASSY to the door control receiver. The collation ECM (smart key ECM ASSY) activates the door lock control function after the ID code authentication process.
3. System functions
(1) The electrical key transmitter SUB-ASSY is fitted with the lock and unlock switches. By operating these switches, the driver can operate each function. The wireless door lock control system has the following functions.
Function
Operation
All door lock function
When the lock switch is pressed, all doors are locked.
Driver’s door unlock function
When the unlock switch is pressed, only the driver’s door is unlocked.
All door unlock function (unlock 2 operation) *1
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 electrical key transmitter SUB-ASSY 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.
Answer-back function (wireless door lock buzzer) *2
It reports the completion of operation by sounding the wireless lock buzzer once when the door is locked or twice when the door is unlocked.
Door open warning function
When the lock switch is pressed while a door is open or not closed properly, the buzzer sounds continuously for 10 seconds. The buzzer stops sounding when all doors are closed or the unlock switch is pressed.
Auto lock function
If no door is opened within 30 seconds after the doors are unlocked using the wireless door lock control, 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 electrical key transmitter SUB-ASSY while the system is in the self diagnosis mode, the room lamp blinks in a pattern corresponding to each switch.
Transmitter identification code registration function
7 transmitter identification codes can be registered (written and saved) in the EEPROM integrated in the collation ECM (smart key ECM ASSY).
·*1: With key link switch
·*2: With Wireless lock buzzer answer-back function
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.
1. Bring in the car


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2. Check 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.

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3. Checking DTC*

(2) Clear the diagnostic code.
(3) Recheck each DTC. Based on DTC output in the above steps, simulate the symptom indicated by that DTC so that the same CAN communication system DTC or wireless door lock control system DTC output can be obtained.
Result
Result
Go to
No DTC is output
A
CAN communication system DTC is output
B
Wireless door lock control system DTC is output
C
B
C
>Proceed to “List of diagnostic codes.” (Refer to )

A▼

5. General analysis and troubleshooting *

(2) ECM terminals (Refer to )
(3) [Current Data Display & Save] / [System Operation Check Mode] (Refer to )

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6. Repair or replace


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7. Confirmation test


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Complete

OPERATION CHECK
1. Take into account the following points when checking.
(1) Wireless door lock/unlock function:
The wireless door lock control function operates only when the following three conditions are met.
(a) The engine switch is off.
(b) All doors are closed.
(c) Power door lock system is operating normally.
NOTE:
The unlock function operates even when a door is open.
(2) The operation range of wireless door lock control function varies depending on the situation.
(a) The operation area varies depending on the user and how the electrical key transmitter SUB-ASSY is held.
(b) In some areas, the remote control function may work only in a part of the operation range. This is because the operation range is reduced due to the vehicle shape or surrounding environment.
(c) Because the electrical key transmitter SUB-ASSY uses an extremely low power radio wave, the operation range may be limited or the remote control may not function if a strong radio wave or noises are present in the same frequency band as the electrical key transmitter SUB-ASSY.
(d) If the battery charge level of the electrical key transmitter SUB-ASSY is low, the operation range is reduced and the remote control may not function.
NOTE:
If the electrical key transmitter SUB-ASSY is left under direct sunlight for a long time (for example, 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 outlined in this text are those for transmitting signals. The switches are integrated in the electrical key transmitter SUB-ASSY.
·All the functions listed below must be inspected in relation to the remote control operation range.
(1) Confirm that the vehicle is set in an environment where the wireless control function can operate.
(2) Inspect the basic functions.
(a) Check that the transmitter LED illuminates three times or more when the lock switch of the electrical key transmitter SUB-ASSY is held down for 5 seconds or more.
NOTE:
If LED does not illuminate three times or more even when the switch is held down, it is possible that the battery charge level is low.
(b) Check that all doors are locked when the lock switch is pressed.
(c) Check that all doors are unlocked when the unlock switch is pressed.
(3) Check the chattering prevention function.
(a) Check that the relevant operation takes place only once without being repeated while the switch is held down. Check that the relevant operation takes place when the switch is pressed at 1 second intervals.
(4) Check the auto lock function.
(a) Press the unlock switch to unlock all doors. Check that all doors are automatically locked if no door is opened and all doors are not locked within 30 seconds.
(b) Press the unlock switch to unlock all doors. Check that the auto lock function does not operate if any door is opened or all doors are locked within 30 seconds.
(c) Press the unlock switch to unlock all doors. Check that the auto lock function does not operate if all doors are locked manually (for example, by key link operation or by pressing the lock switch) within 30 seconds.
(5) Check the switch operation false recognition prevention function.
(a) Check that all doors are not locked and unlocked by any switch operation with a transmitter not registered but are locked and unlocked by switch operations with a registered transmitter.
(6) Check the door open warning function.
(a) Check that the wireless door lock buzzer sounds continuously for 5 seconds when the lock switch is pressed while a door is open or not closed properly.
(7) Check the answer-back function (hazard warning lights flashing).
(a) Check that the hazard warning light blinks once and all doors are locked simultaneously when the lock switch is pressed.
(b) Check that the hazard warning light blinks twice and all doors are unlocked simultaneously when the unlock switch is pressed.
(8) Check the answer-back (wireless door lock buzzer) 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.
(c) When the trunk is opened by wireless operation, the wireless door lock buzzer sounds.
*: With wireless door lock buzzer answer-back function
(9) 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 (with entry & start system)
(1) Notes on customization via SSM3
CAUTION:
·When a customer requests a function change, check if the function is customizable.
·Before 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 the engine switch (IG) to ON.
(c) Turn on the SSM3.
(d) Enter the following menus: [Integ. unit mode] → [Unit customizing]
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 main body ECM (multiplex network body computer) connectors D6 and A73.
(4) Connect the main body ECM (multiplex network body computer) connectors D6 and A73.
(5) Install the main body ECM (multiplex network body ECM) to the instrument panel junction block ASSY.
(6) Measure the voltages and pulses 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
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
Door control switch is not pressed
1 V or less
Lock side of door control switch is not pressed
11 to 14 V
3B-6 - chassis ground
Door lock motor lock drive output (trunk)
The trunk open button on the electrical key transmitter SUB-ASSY is not pressed.
11 to 14 V
The trunk open button on the electrical key transmitter SUB-ASSY is pressed.
1 V or less
3B-1 - chassis ground
Door lock motor unlock drive output
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
Door control switch is not pressed
1 V or less
Unlock side of door control switch is not pressed
11 to 14 V
D6-11 - Chassis ground
Driver’s door unlock detection switch input
The driver’s door is locked.
1 V or less
Engine switch is OFF, all doors are closed, and driver’s door is locked
Pulse generation
D6-12 - Chassis ground
Driver’s door unlock detection switch input
Passenger’s door is unlocked
1 V or less
Engine switch OFF, all doors closed, and passenger’s door locked
Pulse generation
CHECKING / CLEARING DIAGNOSTIC CODES
1. Check DTC
(1) Connect the SSM3 to the DLC3.
(2) Turn the engine switch (IG) to ON.
(3) Turn on the SSM3.
(4) Enter the following menus: [Integ. unit mode] → [Diagnostic Code(s) Display]
(5) Check the DTC.
2. Clear the DTC.
(1) Connect the SSM3 to the DLC3.
(2) Turn the engine switch (IG) to ON.
(3) Turn on the SSM3.
(4) Enter the following menus: [Integ. unit mode] → [Clear Memory]
(5) 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 reading [Current Data Display & Save] on SSM3, you can check the values and status of switches, sensors, actuators and other items without removing any 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 the engine switch (IG) to ON.
(3) Turn on the SSM3.
(4) Enter the following menus: [Integ. unit mode] → [Current Data Display & Save] or [Keyless access system] → [Collation ECM] → [Current Data Display & Save].
DTCB1242 Malfunctions in wireless tuner system
Circuit figure
Inspection steps
CAUTION:
·The entry & start system uses multiplex communication. Before performing a troubleshooting, perform checks in the “How to troubleshoot” and check that no communication error is present. (Refer to )
·Before replacing the collation ECM (smart key ECM ASSY), refer to the entry & start system (entry function).
·When inspecting or replacing the door control receiver or wiring harness, do not change the position or length of the wiring harness. A wiring harness too close to the door control receiver may affect the entry and wireless functions.
2. Inspect wiring harness and connector (door control receiver collation ECM (smart key ECM))

(1) Remove the D40 and the D48 connectors of the collation ECM (smart key ECM ASSY).
NG
>Repair or replacement of wiring harness or connector

OK▼
Replace the collation ECM (smart key computer ASSY)

Answer-back function does not work (hazard + buzzer).
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).
*: With wireless door lock buzzer answer-back function
Circuit figure
Inspection steps
CAUTION:
The wireless door lock control system uses CAN communication system. First, check that no fault is present in the CAN communication system. Refer to “How to troubleshoot”.
8. Replacing wireless door lock buzzer

(1) Temporarily replace the wireless door lock buzzer with a new one.

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9. 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▼
END (Wireless door lock buzzer is faulty)

10. 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
>To Lighting system (proceed to hazard warning switch circuit)

OK▼
Replacement of the main body ECM (multiplex network body ECM)