Symptom Chart

MODULE COMMUNICATIONS NETWORK SYMPTOM CHART

Condition	Possible Sources	Action
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 A .
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 B .
The restraint control module (RCM) does not respond to the diagnostic tool	Circuit or connection in the International Standards Organization (ISO) 9141 communications network RCM	GO to PINPOINT TEST C .
The anti-lock brake system (ABS) module does not respond to the diagnostic tool	Circuit or connection in the International Standards Organization (ISO) 9141 communications network ABS module	GO to PINPOINT TEST D .
The vehicle security module does not respond to the diagnostic tool	Circuit or connection in the International Standards Organization (ISO) 9141 communications network Vehicle security module	GO to PINPOINT TEST E .
No controller area network (CAN) communication	Circuit or connection in the CAN CAN modules	GO to PINPOINT TEST F .
No International Standards Organization (ISO) 9141 communications network communication	Circuit or connection in the ISO 9141 communications network ISO 9141 communications network modules	GO to PINPOINT TEST G .
No module/network communication - no power to the diagnostic tool	Battery junction box (BJB) fuse 18 (60A) Central junction box (CJB) fuse 26 (20A) Data link connector (DLC) C251 pins Diagnostic tool Circuitry	GO to PINPOINT TEST H .