Wiper High/Low Relay Output Circuit Low
Monitored & Set Condition
- When Monitored: With ignition On.
- Set Condition: The BCM detects a low (ground) signal on the Wiper On/Off Relay output even though it is not attempting to drive the output for more than 5 seconds.
Possible Causes:
- Intermittent Condition
- Wiper High/Low Relay Short To Ground
- Wiper High/Low Relay
- Body Control Module
Testing
- Turn the ignition on. With the DRBIII(R), clear all BCM DTC's. Turn the Wipers on. With the DRBIII(R), read the DTC information. Does the DRBIII(R) read: WIPER HIGH/LOW RELAY OUTPUT CIRCUIT LOW? If yes, go to next step. If no, the condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST .
- Turn the ignition off. Disconnect the Wiper High/Low Relay. Measure the resistance between ground and the Wiper High low Relay Control circuit. Is the resistance below 5.0 ohms? If yes, repair the Wiper High/Low Relay Control circuit for a short to ground. Perform BODY VERIFICATION TEST . If no, go to next step.
- Turn the ignition off. Disconnect the Wiper High/Low Relay harness connector. Measure the voltage of the Wiper High/Low Relay harness connector coil side feed circuit to ground. Is the voltage above 10.0 volts? If yes, replace the Wiper High/Low Relay. Perform BODY VERIFICATION TEST . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST .