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System Tests: Notes

NOTE: Always check module power and ground circuits prior to replacing a control module. See GROUND DISTRIBUTION or POWER DISTRIBUTION article in WIRING DIAGRAMS.
SYMPTOM INDEX

Symptom Perform Test
Powertrain Control Module (PCM) Does Not Respond To NGS Tester A 
Anti-Lock Brake System (ABS) Module Does Not Respond To NGS Tester B 
Air Bag Control Module Does Not Respond To NGS Tester (1) C 
Hybrid Electronic Cluster (HEC) Module Does Not Respond To NGS Tester (2) D 
Anti-Theft/Double Locking Module Does Not Respond To NGS Tester (3) E 
No Module/Network Communication - ISO 9141 Network F 
No Module/Network Communication - No Power To NGS Tester G 
(1) Air bag control module may also be referred to as electronic crash sensor module.
(2) Hybrid Electronic Cluster (HEC) module is built into instrument cluster.
(3) Anti-theft/double locking module may also be referred to as Central Security Module (CSM).
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