System Tests: Notes

NOTE: Tests included in this article are written specifically for New Generation Star (NGS) tester. Other OBD II-compatible scan tools can be used, but may have limited capabilities. Refer to scan tool manufacturer's instructions.

NOTE: Before performing any system tests, inspect Data Link Connector (DLC) for loose, damaged or corroded terminals. Pay particular attention to terminals No. 2 (Tan/Orange wire), No. 7 (Light Blue/White wire) and No. 10 (Pink/Light Blue wire). Always check module power and ground circuits prior to replacing a control module. See DATA LINK CONNECTORS, GROUND DISTRIBUTION or POWER DISTRIBUTION article in WIRING DIAGRAMS.

SYMPTOM INDEX

Symptom	Perform Test
Anti-Lock Brake System Module Does Not Respond To NGS Tester	A
Restraints Control Module Does Not Respond To NGS Tester	B
Generic Electronic Module Does Not Respond To NGS Tester	C
Instrument Cluster Does Not Respond To NGS Tester	D
Powertrain Control Module Does Not Respond To NGS Tester	E
No Module/Network Communication - ISO 9141 Network	F
No Module/Network Communication - SCP BUS	G
No Module/Network Communication - All Modules	H