Initial Inspection and Diagnostic Overview

INSPECTION AND VERIFICATION

1. Verify the customer concern.

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 cause is not visually evident, connect the diagnostic tool to the data link connector and select the vehicle to be tested from the diagnostic tool menu. If diagnostic 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 diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
6. Carry out the data link diagnostics test. If the diagnostic tool responds with:
- SCP, CAN or ISO circuit fault; all electronic control units have no response / not equipped, refer to Information Bus (Module Communications Network).
- No response/not equipped for smart junction box (SJB), refer to Information Bus (Module Communications Network).
- No response/not equipped for driver seat module (DSM), refer to Information Bus (Module Communications Network).
- SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out self-test diagnostics for the rear electronics module or the driver seat module.
7. If the DTCs retrieved are related to the concern, go to the SJB Diagnostic Trouble Code (DTC) Index or the DSM Diagnostic Trouble Code (DTC) Index to continue diagnostics. SJB Diagnostic Trouble Code (DTC) Index DSM Diagnostic Trouble Code (DTC) Index
8. If DTCs are retrieved that are not found in the DSM Diagnostic Trouble Code (DTC) Index or the SJB Diagnostic Trouble Code (DTC) Index, refer to the DSM Diagnostic Trouble Code (DTC) Index or the SJB Diagnostic Trouble Code (DTC) Index in Information Bus (Module Communications Network). Diagnostic Trouble Code Tests and Associated Procedures
9. If no DTCs related to the concern are retrieved, GO to Symptom Chart to continue diagnostics. Symptom Related Diagnostic Procedures