Inspection and Verification

1. Verify the customer concern by operating the speed control to duplicate the condition.
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 section 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 section Brakes.
5. Visually inspect for obvious signs of mechanical and electrical damage.







VISUAL INSPECTION CHART

6. If the concern remains after the inspection, connect the NGS Tester to the Data Link Connector (DLC) located beneath the instrument panel, and select the vehicle to be tested from the NGS menu. If the NGS 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 NGS still does not communicate with the vehicle, refer to the New Generation STAR Tester manual.
8. Carry out the DATA LINK DIAGNOSTIC TEST.
If the NGS responds with:
^ CKT9I4, CKT9I5 orCKT7O = ALL ECUS
^ NO RESP/NOT EQUIP for PCM,go to pinpoint test A.
Test A: No Communication With the Powertrain Control Module
^ 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 PCM DTC index to continue diagnostics.
PCM Diagnostic Trouble Code (DTC) Index
10. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics. Diagnosis By Symptom