Diagnostic Procedure
PASSENGER HEATED SEAT SWITCH OPEN SYMPTOM CHART
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | Turn the ignition on. With the DRBIII®, erase DTCs. Cycle the ignition switch from Off to Run. Operate the switch that had the DTC 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 intermittent open condition. Perform BODY VERIFICATION TEST - VER 1 . |
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| 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 |
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| 3 | Turn the ignition on. Disconnect the Passenger Seat Switch connector. 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 Passenger Seat Switch MUX wire for an open. Perform BODY VERIFICATION TEST - VER 1 . |
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| 4 | Turn the ignition off. Disconnect the Passenger Seat Switch connector. Measure the resistance of the Seat Switch MUX Return circuit in the switch connector. Is the resistance below 5.0 ohms? Yes --> Replace the Passenger Seat Switch. Perform BODY VERIFICATION TEST - VER 1 . No --> Repair the Seat Switch MUX Return for an open. Perform BODY VERIFICATION TEST - VER 1 . |
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| 5 | Turn the ignition off. Disconnect the Passenger Seat Switch connector. Disconnect the Passenger 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 Passenger Seat Switch MUX circuit for a short to voltage. Perform BODY VERIFICATION TEST - VER 1 . No --> Replace the Passenger Door Module. Perform BODY VERIFICATION TEST - VER 1 . |
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