FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Test L: No International Standards Organization (ISO) 9141 Network Communication, All Modules Are Not Responding

PINPOINT TEST L: NO INTERNATIONAL STANDARDS ORGANIZATION (ISO) 9141 NETWORK COMMUNICATION, ALL MODULES ARE NOT RESPONDING


L1-L2:






L2-L4:






L5-L8:






Normal Operation
The restraints control module (RCM) and the fire suppression module communicates with the scan tool through the ISO 9141 communications network, circuit 70 (LB/WH).

Possible Causes
- Circuit 70 (LB/WH) open, short to ground or voltage (ISO 9141)
- Fire suppression module
- RCM