Inspection and Verification

INSPECTION AND VERIFICATION

1. Verify the customer concern.
2. Verify the speedometer operates correctly without 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.

Visual Inspection Chart:

4. Visually inspect for obvious signs of mechanical or electrical damage.
5. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
6. If the cause of the fault is not visually evident, proceed to diagnoses of the speed control system by:
- connecting the diagnostic tool or
- entering the speed control self-test. Reading and Clearing Diagnostic Trouble Codes

Diagnostic Tool

1. Connect the diagnostic tool to the data link connector (DLC) located beneath the instrument panel, 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.

2. If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
3. Carry out the DATA LINK DIAGNOSTICS test. If the diagnostic tool responds with:
- CKT914, CKT915 or CKT7O ALL ECUS NO RESP/NOT EQUIP, refer to Module Communications Network (Information Bus).
- NO RESP/NOT EQUIP 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.

4. 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
5. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Diagnosis By Symptom

NOTE: DTC P0703 and DTC P1572 must be repaired before any other DTC.