VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC 74 SECONDARY PRESSURE SENSOR OFFSET IS TOO BIG

DTC DETECTING CONDITION:

Pressure sensor malfunction

TROUBLE SYMPTOM:

• ABS does not operate.

• VDC does not operate.

WIRING DIAGRAM:

• LHD model

• RHD model

STEPCHECKYESNO

1.CHECK USER DRIVING METHOD.

Interview the user about their driving habits.

Are the acceleration pedal and brake pedal depressed simultaneously while driving?

Erase the normal DTC for the VDC.

NOTE:

If the vehicle is driven while both the accelerator pedal and brake pedal are used, the DTC is sometimes stored in memory.

2.CHECK OUTPUT OF THE PRESSURE SENSOR USING SUBARU SELECT MONITOR.

1) Select {Current Data Display & Save} in Subaru Select Monitor.

2) Read the pressure sensor output on the Subaru Select Monitor display.

Is the output value 0.6±0.12 V when the brake pedal is not depressed?

Replace the VDCH/U.

3.CHECK VDCCM.

1) Connect all connectors.

2) Erase the memory.

3) Perform the Inspection Mode.

4) Read the DTC.

In the current diagnosis, is the same DTC displayed again?

Replace the VDCCM.

4.CHECK ANY OTHER DTC ON DISPLAY.

Are other DTCs displayed?

Go to the diagnosis corresponding to the DTC.

Temporary poor contact occurs.