Trouble Shooting: Notes

NOTE: A New Generation Star (NGS) Tester (007-00500) or equivalent is required for testing the VAPS system.

Before performing individual component or system tests, check the following for possible cause of system malfunction.

Tire Pressure
Mechanical Condition Of Steering
Power Steering Fluid Level
Pump Pressure
Faulty Fuse No. 8, 20 Or 23
Loose Or Corroded Connectors
Damaged Wiring

If problem remains after inspection, connect and operate New Generation Star (NGS) Tester (007-00500) following manufacturer's instructions. Perform data link diagnostics test. See MODULE COMMUNICATIONS NETWORK article in the ACCESSORIES/SAFETY EQUIPMENT section. If scan tool displays NO RESPONSE/NOT EQUIPPED for Generic Electronic Module (GEM), go to TEST A: NO COMMUNICATION WITH GEM .

If GEM passes data link diagnostics test, retrieve and record continuous Diagnostic Trouble Codes (DTCs) and perform on-demand self test vehicle dynamics module to retrieve current DTCs. See MODULE COMMUNICATIONS NETWORK article in the ACCESSORIES/SAFETY EQUIPMENT section.