Initial Inspection and Diagnostic Overview
INSPECTION AND VERIFICATION1. Verify the customer concern by operating the system.
Visual Inspection Chart:
2. Visually inspect for obvious signs of mechanical or electrical damage.
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
4. If the concern remains after the inspection, connect the scan tool to the data link connector (DLC) located beneath the instrument panel. Then select the vehicle to be tested from the scan tool menu. If the scan tool does not communicate with the vehicle:
- Check that the program card is correctly installed.
- Check the connections to the vehicle.
- Check the ignition switch position.
5. If the scan tool still does not communicate with the vehicle, refer to the scan tool manual.
6. Carry out the DATA LINK DIAGNOSTICS test. If the scan tool responds with:
- SCP+, SCP-, or UBP circuit fault; ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
- NO RESP/NOT EQUIP for DSM, GO to Pinpoint Test A. Test A
- NO RESP/NOT EQUIP for DDM, GO to Pinpoint Test B. Test B
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self test diagnostics for the DSM and the DDM.
7. If the DTCs are retrieved go to the DSM Diagnostic Trouble Code (DTC) Index or the Climate Controlled Seat Module Diagnostic Trouble Code (DTC) Index. Driver Seat Module Diagnostic Trouble Code (DTC) Index Climate Controlled Seat Module Diagnostic Trouble Code Index
8. If the DDM DTCs retrieved are related to the concern, go to the DDM Diagnostic Trouble Code (DTC) Index. DDM Diagnostic Trouble Code (DTC) Index
9. If no DTCs are retrieved, GO to Symptom Chart. Symptom Related Diagnostic Procedures