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 ".

Reading values with SSM3 (answer-back function)

Connect the SSM3 to the DLC3.
Turn the engine switch (IG) to ON.
Turn on the SSM3.
Enter the following menus: [Integ. unit mode] →[Unit customizing]

Referring to the TABLE below, perform settings.

CONTROLLER ECM DISPLAY REFERENCE

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)
*: With wireless door lock buzzer answer-back function

Result

Result	Go to
Both items are ON and levels except 0	A
Both items are OFF or level 0	B

B: Execute the customize function.

A: Go to next step

Inspecting wireless door lock control function

Inspect the wireless door lock control functions using the electrical key transmitter sub-assembly.

Result

Result	Go to
The wireless door lock/unlock functions operate properly. (With wireless door lock buzzer answerback function)	A
The wireless door lock/unlock functions operate properly. (Without wireless door lock buzzer answer-back function)	B
The wireless door lock/unlock functions do not operate properly.	C

B: Go to Step 10.

C: To symptom table

A: Go to next step

Reading values with SSM3 (door unlock detection switch)

Connect the SSM3 to the DLC3.
Turn the engine switch (IG) to ON.
Turn on the SSM3.
Enter the following menu items: [Integ. unit mode] →[Current Data Display & Save].

Based on the display contents of SSM3, read the current data display & save.

Main body

MAIN BODY TESTER DISPLAY REFERENCE

Tester display	Description/display range	Normal value	Remarks
[D Door Lock Pos]	Driver's door unlock detection switch signal/Lock or Unlock	[Lock]: The driver's door is locked. [Unlock]: The driver's door is unlocked.	-
[P Door Lock Pos]	Passenger's door unlock detection switch signal/Lock or Unlock	[Lock]: The passenger's door is locked. [Unlock]: The passenger's door is unlocked.	-

Criteria: SSM3 displays the contents corresponding to the door lock operations indicated in the table

NG: To Lighting system (proceed to door lock detection switch circuit)

OK: Go to next step

Checking wireless answer-back operation

Check the answer-back operation using the electrical key transmitter sub-assembly.

Result

Result	Go to
Only wireless door lock buzzer answer-back does not occur.	A
Only hazard warning light answer-back does not occur.	B

B: Go to Step 10.

A: Go to next step

Executing system operation check mode with SSM3 (wireless door lock buzzer)

Connect the SSM3 to the DLC3.
Turn the engine switch (IG) to ON.
Turn on the SSM3.
Enter the following menu items: [Integ. unit mode] →[Work Support] →[System Operation Check Mode].

Based on the display contents of SSM3, read the current data display & save.

Main body

MAIN BODY TESTER DISPLAY REFERENCE

Tester display	Tested parts	Control range	Remarks
[Wireless Buzzer]	Wireless door lock buzzer	OFF/ON	-

Result

Result	Go to
Wireless door lock buzzer do not turn ON/OFF.	A
Wireless door lock buzzer turns ON/OFF.	B

NG: Replacement of the main body ECM (multiplex network body ECM)

OK: Go to next step

Inspecting wiring harness and connector (wireless door lock buzzer - main body ECM (multiplex network))

Disconnect the wireless door lock buzzer connector A63 and main body ECM (multiplex network body computer) connector A73.

Measure the resistance according to the following table.

Resistance

RESISTANCE REFERENCE

Inspection terminals	Conditions	Standard value
A63-1 - A73-1	Always	1 Ωor less
A63-2 - Chassis ground	Always	1 Ωor less
A63-1 - Chassis ground	Always	10 kΩ or more

NG: Repair or replacement of wiring harness or connector

OK: Go to next step

Inspect the meter panel junction block assembly.

Remove the instrument panel junction block assembly.

Fig 1: Instrument Panel Junction Block Assembly Connector Terminal Identification

Courtesy of SUBARU OF AMERICA, INC.

Resistance

RESISTANCE REFERENCE

Inspection terminals	Inspection conditions	Standard value
MB-3 - 3B-14	Always	1 Ωor less
MB-3 - 3B-16	Always	1 Ωor less

NG: Replacement of instrument panel junction block assembly

OK: Go to next step

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