Inspection and Verification

INSPECTION AND VERIFICATION

1. Verify the customer concern.
2. Verify the speedometer operates correctly without using the speed control by test driving the vehicle. If the speedometer does not operate correctly, refer to Instrument Panel, Gauges and Warning Indicators.
3. Verify the stoplamps operate correctly with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to Lighting and Horns.
4. Verify the parking brake is not applied and is operating correctly. If the parking brake is not operating correctly, refer to Brakes and Traction Control.

Visual Inspection Chart:

5. Visually inspect for obvious signs of mechanical and electrical damage.
6. If the concern remains after the inspection, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the 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.

7. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
8. Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
- SCP+, SCP- or ISO circuit fault; all electronic control units no response/not equipped, refer to Module Communications Network (Information Bus).
- No response/not equipped for PCM, go to Pinpoint Test A. Test A
- System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out the KOEO Test.

9. If the DTCs retrieved are related to the concern, go to the PCM Diagnostic Trouble Code (DTC) Index to continue diagnostics. Diagnostic Trouble Code Tests and Associated Procedures
10. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Diagnosis By Symptom