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 - controller area network (CAN)	Circuit or connection in the CAN PCM	GO to PINPOINT TEST B .
The powertrain control module (PCM) does not respond to the diagnostic tool - standard corporate protocol (SCP) communications network	Circuit or connection in the SCP communications network PCM	GO to PINPOINT TEST C .
The driver door module (DDM) does not respond to the diagnostic tool	Circuit or connection in the international standards organization (ISO) 9141 communications network DDM	GO to PINPOINT TEST D .
The electronic automatic temperature control (EATC) module does not respond to the diagnostic tool	Circuit or connection in the standard corporate protocol (SCP) communications network EATC module	GO to PINPOINT TEST E .
The restraints 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 F .
The rear air suspension module (RASM) does not respond to the diagnostic tool	Circuit or connection in the standard corporate protocol (SCP) communications network RASM	GO to PINPOINT TEST G .
The variable assist power steering (VAPS) module does not respond to the diagnostic tool	Circuit or connection in the standard corporate protocol (SCP) communications network VAPS module	GO to PINPOINT TEST H .
The lighting control module (LCM) does not respond to the diagnostic tool	Circuit or connection in the international standards organization (ISO) 9141 communications network LCM	GO to PINPOINT TEST I .
The fire suppression module (FSM) does not respond to the diagnostic tool - controller area network (CAN)	Circuit or connection in the CAN FSM	GO to PINPOINT TEST J .
The fire suppression module (FSM) does not respond to the diagnostic tool - international standards organization (ISO) 9141 communications network	Circuit or connection in the ISO 9141 communications network FSM	GO to PINPOINT TEST K .
No controller area network (CAN) communication	Circuit or connection in the CAN CAN modules	GO to PINPOINT TEST L .
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 M .
No standard corporate protocol (SCP) communications network communication	Circuit or connection in the SCP communications network SCP communications network modules	GO to PINPOINT TEST N .
No module/network communication - no power to the diagnostic tool	Central junction box (CJB) fuse 27 (15A) Data link connector (DLC) pins Diagnostic tool Circuitry	GO to PINPOINT TEST O .