DTC 7-1 Solenoid, Right Front

DIAGNOSTIC PERIOD
During initial and regular diagnosis.

DESCRIPTION OF DIAGNOSIS
The Anti-lock Brake System (ABS) indicator light is turned on when either or both rear wheels lock and the wheel sensor signal is missing during driving. This diagnosis is not performed when the parking brake switch is ON.

PROBABLE CAUSE
- Fail-safe relay stuck OFF.
- Open circuit in the solenoid drive circuit between the under-hood ABS. fuse/relay box and ABS control unit.
- Short to body ground in the solenoid drive circuit between the solenoid and ABS control unit.
- Faulty solenoid drive transistor (ON) in the ABS control unit.
- Short to power in the solenoid drive circuit between the solenoid and ABS control unit.
- Faulty solenoid drive transistor (OFF) in the ABS control unit.
- Short to power in the drive circuit inside the solenoid.
- Short to the outlet circuit in the inlet circuit between the solenoid and ABS control unit.

PROBABLE CAUSE WHEN SYMPTOM DOES NOT REAPPEAR
- Intermittent interruption in the solenoid valve drive circuit.
- Intermittent interruption in the solenoid valve ground circuit.
- Intermittent interruption in the fail-safe relay circuit.

Refer to Diagnostic Charts. DTC 7-1