Inspection and Verification: Notes

Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

VISUAL INSPECTION CHART

Mechanical	Electrical
Accessory drive belt Brake fluid level Compass module (integral to the auto-dimming interior mirror) Door/trunk ajar status Engine coolant level Engine oil level Front Display Interface Module (FDIM) Fuel evaporative system Fuel tank Tire pressure Tire size	Smart Junction Box (SJB) fuse(s): 14 (10A) (FDIM) 26 (10A) (Instrument Panel Cluster (IPC)) 36 (5A) (IPC) 41 (15A) (compass module) Wiring, terminals or connectors Message center switch Key-in ignition warning switch (part of the ignition switch) SJB IPC

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

NOTE: The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:

Check the VCM connection to the vehicle.

Check the scan tool connection to the VCM.

Refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.

If the scan tool does not communicate with the vehicle:

Verify the ignition key is in the ON position.

Verify the scan tool operation with a known good vehicle.

Refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.

Carry out the network test.

If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .

If the network test passes, retrieve and record the continuous memory DTCs.

Clear the continuous DTCs and carry out the self-test diagnostics for the IPC, ABS module, PCM, SJB and Restraints Control Module (RCM).

If the DTCs retrieved are related to the concern, go to DTC CHARTS . For all other DTCs, refer to the DTC Chart in MULTIFUNCTION ELECTRONIC MODULES .