Wiper Switch MUX Circuit Open

When Monitored: The ignition must be in the run position and battery voltage supplied to the BCM on the Fused B (+) circuit.

Set Condition: If the voltage on the wiper switch Multiplex (MUX) circuit is more than 4.8 volts for more than 5 seconds the code will set.

Possible Causes are:

VERIFYING ACTIVE DTC WIPER SWITCH MUX CIRCUIT OPEN
WIPER SWITCH RETURN CIRCUIT OPEN
WINDSHIELD WIPER SWITCH MUX CIRCUIT OPEN
RIGHT MULTI-FUNCTION SWITCH DEFECTIVE
WINDSHIELD WIPER SWITCH MUX CIRCUIT OPEN
BCM DEFECTIVE WIPER MUX CIRCUIT OPEN

Turn ignition on. Using the DRBIII(R), Erase BCM DTC's Turn ignition off then turn ignition on. Turn the wiper switch to each intermittent position, then low and high speed positions. Using the DRBIII(R), read BCM DTC's. Does the DRBIII(R) show WIPER SWITCH MUX CIRCUIT OPEN? If yes, go to next step. If no, test is complete. Code is not present at this time.
Turn ignition off. Disconnect the right multi-function switch connector. Disconnect the BCM C2 connector. Using an ohmmeter, Measure the resistance of the Wiper Switch Return circuit between the BCM C2 connector and the right multi-function connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Windshield Wiper Switch Return circuit. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
Turn ignition off. Disconnect the right multi-function switch connector. Disconnect the BCM C2 connector. Using an ohmmeter, Measure the resistance of the Windshield Wiper Switch MUX circuit between the BCM C2 connector and the right multi-function connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Windshield Wiper Switch MUX circuits. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS.
Turn ignition off. Disconnect the right multi-function switch connector. Turn the Windshield Wiper Switch to the OFF position. Connect an ohmmeter between the right multi-function switch terminals No. 7 and No. 8. Observe the ohmmeter while turning the windshield wiper switch from the OFF position to the high speed position. Is the resistance less than 40 ohms in any position? If yes, replace the right multi-function switch. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, go to next step.
Turn ignition off. With a jumper, back probe a jumper wire between the Wiper Switch Return Circuit and the Windshield Wiper Switch MUX circuit at the BCM C2 connector. Turn Ignition on. Using the DRBIII(R), read the WIPER MODE SW VOLTS sensor. Does the DRBIII(R) show the sensor volts more than 4.8 volts? If yes, replace the Body Control Module. Perform BODY VERIFICATION TEST VER 1 under VERIFICATION TESTS. If no, test is complete.