Diagnostic Procedure
DIAGNOSTIC PROCEDURE
| Step | Check | Yes | No |
|---|---|---|---|
| 1 CHECK STOP LIGHT SWITCH CIRCUIT. Check stop light switch open circuit. |
Is the stop light switch circuit OK? | Go to step 2 . | Repair the stop light switch circuit.
NOTE:
If there is malfunction in the stop light circuit, DTC may be recorded in the memory.
|
2 CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR.
|
With the brake pedal released, is the displayed value 0 - 11 bar? | Go to step 3 . | Replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . > |
3 CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR.
|
When the brake pedal is operated, do the FL wheel cylinder output and FR wheel cylinder output displayed on the screen change in accordance with the brake pedal? In addition, is the difference between FR and FL wheel cylinder output values less than 10 bar? |
Go to step 4 . | Replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . > |
4 CHECK PRESSURE SENSOR.
|
Is the same DTC displayed? | Replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . > | Go to step 5 . |
| 5 CHECK OTHER DTC DETECTION. | Is any other DTC displayed? | Perform the diagnosis according to DTC. < Refer to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > | It results from a temporary noise interference. |