DTC 1-8 High Pressure System
DIAGNOSTIC PERIODDuring initial diagnosis
DESCRIPTION OF DIAGNOSIS
This diagnosis is performed when the pressure switch is OFF at the initial diagnosis. The pump motor is operated to turn the pressure switch ON, then the solenoid valve is momentarily activated. The Anti-lock Brake System (ABS) indicator light is turned on if the pressure switch signal changes from ON to OFF.
PROBABLE CAUSE
- Accumulator gas leakage.
- Changed relief valve set pressure.
- Rear outlet solenoid valve late to close.
- Changed pressure switch set pressure.
PROBABLE CAUSE WHEN SYMPTOM DOES NOT REAPPEAR
The ABS indicator light may not come on in normal climate when it comes on in very cold climate.
Refer to Diagnostic Charts. DTC 1-8