Diagnostic Procedure

DRIVER HEATED SEAT SWITCH OPEN - DDM - DIAGNOSTIC PROCEDURE

TEST	ACTION	APPLICABILITY
1	Turn the ignition on. With the DRBIII®, erase DTCs. Cycle the ignition switch from Off to Run. Operate the switch indicated by the DRBIII® in all positions several times. With the DRBIII®, read DTCs. Does the DRBIII® display the same DTC? Yes: Go To 2 No: The condition that caused this code to set is not present at this time. Review wiring schematics and inspect related wiring for an intermittent condition. Perform BODY VERIFICATION TEST VER-1 .	All
2	Turn the ignition on. With the DRBIII® in Sensors, read the Seat Switch voltage of the switch that had the DTC. Select the voltage displayed. 4.4 to 5.1 volts.: Go To 3 Over 5.2 volts: Go To 5	All
3	Disconnect the Driver Seat Switch connector. Turn the ignition on. Measure the voltage of the Switch MUX circuit indicated by the DRBIII® and ground. Is the voltage between 4.4 and 5.1 volts? Yes: Go To 4 No: Repair the Switch MUX wire for an open. Perform BODY VERIFICATION TEST VER-1 .	All
4	Turn the ignition off. Disconnect the Driver Seat Switch connector. Measure the resistance of the Seat Switch MUX Return circuit in the switch connector to ground. Is the resistance below 5.0 ohms? Yes: Replace the Driver Seat Switch. Perform BODY VERIFICATION TEST VER-1 . No: Repair the Seat Switch MUX Return for an open. Perform BODY VERIFICATION TEST VER-1 .	All
5	Turn the ignition off. Disconnect the Driver Seat Switch connector. Disconnect the Driver Door Module C2 connector. Inspect the Seat Switch MUX circuit that had the DTC for a possible short to voltage. Were there any problems found? Yes: Repair the MUX circuit for a short to voltage. Perform BODY VERIFICATION TEST VER-1 . No: Replace the Driver Door Module. Perform BODY VERIFICATION TEST VER-1 .	All