DTC 1-8

NORMAL OPERATION
When the ABS control unit detects the pressure switch OFF signal during the initial diagnosis, it drives the ABS pump motor until the pressure switch turns ON. Then, it momentarily activates the outlet solenoid valve and monitors the pressure switch signal. The ABS control unit keeps the ABS indicator light on if it detects the pressure switch OFF signal at this time.

Possible Causes
- Accumulator gas leakage.
- Changed relief valve set pressure.
- Rear outlet solenoid valve late to close.
- Changed pressure switch set pressure.