Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
The anti-lock brake system (ABS) module does not respond to the diagnostic tool	Circuit or connection in the controller area network (CAN). ABS module.	GO to PINPOINT TEST A .
The powertrain control module (PCM) does not respond to the diagnostic tool	Circuit or connection in the controller area network (CAN). PCM.	GO to PINPOINT TEST B .
The instrument cluster does not respond to the diagnostic tool	Circuit or connection in the controller area network (CAN). Instrument cluster.	GO to PINPOINT TEST C .
The restraint control module (RCM) does not respond to the diagnostic tool	Circuit or connection in the controller area network (CAN). RCM.	GO to PINPOINT TEST D .
The generic electronic module (GEM) does not respond to the diagnostic tool	Circuit or connection in the international standards organization (ISO) 9141 communications network. GEM.	GO to PINPOINT TEST E .
No international standards organization (ISO) network communication	Circuit or connection in the ISO 9141 communications network. Generic electronic module (GEM). Central junction box (CJB) fuse(s): 63 (20A). 32 (15A).	GO to PINPOINT TEST E .
No controller area network (CAN) network communication	Circuit or connection in the CAN. Anti-lock brake system (ABS) module. Powertrain control module (PCM). Instrument cluster. Restraint control module (RCM). Occupant Classification Sensor.	GO to PINPOINT TEST F .
No module/network communication - no power to the diagnostic tool	Data link connector (DLC). Central junction box (CJB) fuse 48 (10A). Circuitry. Diagnostic tool	GO to PINPOINT TEST G .