Wiper Mode Switch Circuit High

Monitored & Set Condition

When Monitored: With ignition On.
Set Condition: The BCM detects a voltage greater than 4.75-volts on the Wiper Mode Switch input for more than 5 seconds.

Possible Causes:

Testing

Turn the ignition on. With the DRBIII(R), erase all BCM DTC's. Turn the Wipers on. With the DRBIII(R), read DTCs. Does the DRBIII(R) display: WIPER MODE SWITCH CIRCUIT HIGH? 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 Multifunction Switch harness connector. Connect a jumper wire between the Front Wiper Switch MUX circuit to ground. Turn the ignition on. With the DRBIII(R), select Body, Body Controller and read: Wiper Switch volts. Does the DRBIII(R) display: Multifunction Switch voltage below 0.5volts? If yes, replace the Multifunction Switch. Perform BODY VERIFICATION TEST . If no, go to next step.
Turn the ignition off. Disconnect the Body Control Module harness connector. Disconnect the Multifunction Switch harness connector. Measure resistance of the Front Wiper Switch MUX circuit from the Body Control Module connector to the Multifunction Switch harness connector. Is the resistance above 5.0 ohms? If yes, repair the Front Wiper Switch MUX circuit for an open condition. Perform BODY VERIFICATION TEST . If no, replace the Body Control Module. Perform BODY VERIFICATION TEST .