DTC 1-4 Pressure Switch

DIAGNOSTIC PERIOD
During initial diagnosis.

DESCRIPTION OF DIAGNOSIS
- The Anti-lock Brake System (ABS) indicator light is turned on when the pressure switch ON signal is always detected at every initial diagnosis.
- The count is erased when the ABS control unit detects the pressure switch OFF signal.

PROBABLE CAUSE
- Short to body ground between the ABS control unit and pressure switch.
- Pressure switch stuck ON.
- Faulty ABS control unit.

Refer to Diagnostic Charts. DTC 1-4