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System Tests: Notes

NOTE: Always check module power and ground circuits prior to replacing a control module. See appropriate wiring diagram in DATA LINK CONNECTORS, GROUND DISTRIBUTION or POWER DISTRIBUTION article in WIRING DIAGRAMS.
SYMPTOM CHART

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 Diagnostic Monitor Module Does Not Respond To NGS Tester (1) C 
Hybrid Electronic Cluster (HEC) Module Does Not Respond To NGS Tester (2) D 
Anti-Theft/Central 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 diagnostic monitor may also be referred to as electronic crash sensor module.
(2) Hybrid Electronic Cluster (HEC) module is built into instrument cluster.
(3) Anti-theft/central locking module may also be referred to as Central Security Module (CSM).
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