FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Test G: The Restraints Control Module (RCM) Does Not Respond To The Scan Tool

PINPOINT TEST G: THE RESTRAINTS CONTROL MODULE (RCM) DOES NOT RESPOND TO THE SCAN TOOL


G1-G3:






G3-G5:






Normal Operation
The RCM communicates with the scan tool through the ISO 9141 communications network, circuit 70 (LB/WH). The RCM is the only module on the ISO 9141 network. Voltage for the RCM is provided by circuit 937 (RD/WH). Ground is provided by circuit 1203 (BK/LB).

Possible Causes
- Fuse
- Circuit 70 (LB/WH) open
- Circuit 937 (RD/WH) open
- Circuit 1203 (BK/LB) open
- RCM