Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
The PCM does not respond to the scan tool	Wiring, terminals or connectors PCM	REFER to the ENGINE CONTROLS - PINPOINT TESTS, see PINPOINT TEST QA: UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR , before proceeding to Pinpoint Test A. If pinpoint test QA has been completed, GO to PINPOINT TEST A .
The ABS module does not respond to the scan tool	Fuse Wiring, terminals or connectors ABS module	GO to PINPOINT TEST B .
The Instrument Cluster (IC) does not respond to the scan tool	Fuse Wiring, terminals or connectors IC	GO to PINPOINT TEST C .
The Steering Angle Sensor Module (SASM) does not respond to the scan tool	Wiring, terminals or connectors SASM	NOTE: The Steering Angle Sensor Module (SASM) communicates with other modules on the High Speed Controller Area Network (HS-CAN) but does not communicate with the scan tool. REFER to ANTI-LOCK BRAKE SYSTEM AND STABILITY CONTROL .
The Parking Aid Module (PAM) does not respond to the scan tool or no ISO communication	Fuse Wiring, terminals or connectors PAM	GO to PINPOINT TEST D .
The Accessory Protocol Interface Module (APIM) does not respond to the scan tool	Fuse Wiring, terminals or connectors APIM (late build)	GO to PINPOINT TEST E .
The Occupant Classification System Module (OCSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors OCSM	GO to PINPOINT TEST F .
The Restraints Control Module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors Case ground open RCM	GO to PINPOINT TEST G .
The Tire Pressure Monitoring System (TPMS) module does not respond to the scan tool	Fuse Wiring, terminals or connectors TPMS module	GO to PINPOINT TEST H .
The Generic Electronic Module (GEM) does not respond to the scan tool	Fuse Wiring, terminals or connectors GEM	GO to PINPOINT TEST I .
No Medium Speed Controller Area Network (MS-CAN) communication, all modules are not responding	Wiring, terminals or connectors APIM GEM OCSM TPMS module	GO to PINPOINT TEST J .
Intermittent no Medium Speed Controller Area Network (MS-CAN) communication, one or more modules are not responding during network test	Wiring, terminals or connectors DLC	GO to PINPOINT TEST K .
No High Speed Controller Area Network (HS-CAN) communication, all modules are not responding	Wiring, terminals or connectors APIM (late build) DLC IC (gateway module) PCM SASM (if equipped)	GO to PINPOINT TEST L .
Intermittent no High Speed Controller Area Network (HS-CAN) communication, one or more modules are not responding during network test	Wiring, terminals or connectors DLC	GO to PINPOINT TEST M .
No power to the scan tool	Fuse Wiring, terminals or connectors DLC Scan tool	GO to PINPOINT TEST N .