Abs-7: Shorted Isolation Solenoid Ground Circuit
- Turn ignition off. Disconnect solenoid valve harness connector. Using ohmmeter, measure resistance between isolation solenoid terminal (Orange/White wire) and ground terminal (Black wire) of solenoid valve connector. See Figure. If resistance is 3-6 ohms, go to next step. If resistance is less than 3 ohms, replace hydraulic unit.
- Leave solenoid valve harness connector disconnected. Disconnect negative battery cable. Disconnect ABS control module harness connector. Using ohmmeter, measure resistance between terminal "C" of ABS control module harness connector and chassis ground. See Figure.
- If resistance is less than 20,000 ohms, repair short to ground between solenoid valve and ABS control module. Reconnect ABS control module and solenoid valve. If resistance is greater than 20,000 ohms, replace ABS control module.