Initial Inspection and Diagnostic Overview

1. Verify the customer concern by operating the system.

Visual Inspection Chart:

2. Visually inspect for obvious signs of mechanical and electrical damage.
3. 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 Tester menu. If the NGS Tester does not communicate with the vehicle:
1. check that the program card is correctly installed.
2. check the connections to the vehicle.
3. check the ignition switch position.

4. If the NGS Tester still does not communicate with the vehicle, refer to the NGS Tester manual.

5. Carry out the DATA LINK DIAGNOSTICS test. If the NGS Tester responds with:
1. CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, see COMMUNICATIONS NETWORK.
2. NO RESP/NOT EQUIP for PCM, see COMMUNICATIONS NETWORK.
3. NO RESP/NOT EQUIP for HEC, see PINPOINT TEST 1: NO COMMUNICATION WITH THE INSTRUMENT CLUSTER.
4. SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the PCM see PCM QUICK TEST.

6. If the DTCs retrieved are related to the concern, go to PCM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to TROUBLESHOOTING INDEX - ANTI THEFT SYSTEM to continue diagnostics.