Inspection steps

CAUTION: When the skid control ECM (brake actuator assembly) has been replaced, make sure to perform [VDC sensor midpoint setting mode]. (Refer to WORK SUPPORT )

Diagnostic code output check (CAN communication system)

Check CAN communication system. (Refer to HOW TO TROUBLESHOOT )

Result

Result	Go to
No output	A
Output exists	B

B: To CAN communication system (How to troubleshoot) (Refer to HOW TO TROUBLESHOOT )

A: Go to next step

Inspection of skid control ECM connector connection
1. Check if the skid control ECM connector is properly connected.
  Criteria: The connector is properly connected.
  
  NG: Properly connect the connector to the ECM.
  
  OK: Go to next step
Check the battery.
1. Check the battery voltage.
  Standard voltage: 11 to 14 V
  
  NG: Repair or replace charging system components or battery (Refer to ON-VEHICLE INSPECTION )
  
  OK: Go to next step

Check the Current Data Display (TRC/VSC OFF mode)

Connect the SSM3 to the DLC3.
Start the engine.

Using SSM3, check [Current Data Display] of [TRC/VSC OFF Mode]. (Refer to CURRENT DATA DISPLAY & SAVE )

SSM3 screen: [Chassis]→[ABS/VDC System]→[Current Data Display & Save]

ITEM DESCRIPTION

Tester display	Measured item/Range	Normal condition	Notes for diagnosis
[TRC/VSC OFF Mode]	TRC/Vehicle stability control OFF Mode/Normal mode, TRC OFF mode, VSC OFF mode	Normal: Normal mode TRC OFF: TRC OFF mode VSC OFF: Vehicle stability control OFF mode	-

Using SSM3, make sure that the state of the switch displayed in SSM3 changes depending on the Vehicle stability control OFF switch operation.
Criteria: The display of the SSM3 changes depending on the operation of Vehicle stability control OFF switch.

NG: Go to Step 6.

OK: Go to next step

Combination meter assembly check
1. Using SSM3, display [System Operation Check Mode] of the combination meter assembly (meter CPU). (Refer to CURRENT DATA DISPLAY & SAVE/SYSTEM OPERATION CHECK MODE )
2. Check the combination meter assembly.
  Criteria: Vehicle stability control OFF indicator light is turned ON or OFF depending on the SSM3 operation.
  
  NOTE: If this page is referred while performing troubleshooting described in the symptom table, go back to the table and go to the next step before replacing parts. (Refer to SYMPTOM TABLE )
  
  NG: Replacement of combination meter assembly (Refer to COMBINATION METER ASSEMBLY )
  
  OK: Replacement of brake actuator assembly (Refer to REMOVAL )
Vehicle stability control OFF switch check
1. Check the Vehicle stability control OFF switch. (Refer to INSTALLATION )
  NG: Replacement of Vehicle stability control OFF switch (Refer to VSC (VDC) OFF SWITCH )
  
  OK: Go to next step

Harness and connector check (skid control ECM - Vehicle stability control OFF switch)

Disconnect the skid control ECM connector.

Measure the resistance according to the following table.

Normal resistance

NORMAL RESISTANCE SPECIFICATION

Tester connection	Condition	Specific condition
A5-12 (CSW) - D35-5	Always	1 Ωor less
A5-12(CSW) - chassis ground	Always	10 kΩ or more
D35-8 - chassis ground	Always	1 Ωor less

Fig 1: Skid Control Computer (Brake Actuator Assembly) Connector End View (A5)

Courtesy of SUBARU OF AMERICA, INC.

NOTE: If this page is referenced while performing troubleshooting described in the symptom table, go back to the table and go to the next step before replacing parts. (Refer to SYMPTOM TABLE )

NG: Repair or replacement of wiring harness or connector

OK: Replacement of brake actuator assembly (Refer to REMOVAL )