Symptom Chart

Condition	Possible Sources	Action
The PCM does not respond to the scan tool	Wiring, terminals or connectors PCM	REFER to the Introduction - Gasoline Engines , Section 5, pinpoint test QA 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 restraints control module (RCM) does not respond to the scan tool	Fuse Wiring, terminals or connectors Case ground open RCM	Go to Pinpoint Test C .
The four wheel drive (4WD) control module does not respond to the scan tool	Fuse Wiring, terminals or connectors 4WD control module	Go to Pinpoint Test D .
The occupant classification sensor module does not respond to the scan tool	Fuse Wiring, terminals or connectors Occupant classification sensor module	Go to Pinpoint Test E .
The adaptive front lighting module does not respond to the scan tool	Fuse Wiring, terminals or connectors Adaptive front lighting module	Go to Pinpoint Test F .
The steering angle sensor module does not respond to the scan tool	Fuse Wiring, terminals or connectors Steering angle sensor module	Go to Pinpoint Test G .
The instrument cluster does not respond to the scan tool	Fuse Wiring, terminals or connectors Instrument cluster	Go to Pinpoint Test H .
The smart junction box (SJB) does not respond to the scan tool	Fuse Wiring, terminals or connectors SJB	Go to Pinpoint Test I .
The electronic automatic temperature control (EATC) module does not respond to the scan tool	Fuse Wiring, terminals or connectors EATC module	Go to Pinpoint Test J .
The audio unit does not respond to the scan tool	Fuse Wiring, terminals or connectors Audio unit	Go to Pinpoint Test K .
The THX® amplifier does not respond to the scan tool	Fuse Wiring, terminals or connectors THX® amplifier	Go to Pinpoint Test L .
The satellite radio receiver does not respond to the scan tool	Fuse Wiring, terminals or connectors Satellite radio receiver	Go to Pinpoint Test M .
The digital versatile disc (DVD) player does not respond to the scan tool	Fuse Wiring, terminals or connectors DVD player	Go to Pinpoint Test N .
The driver seat module (DSM) does not respond to the scan tool	Fuse Wiring, terminals or connectors DSM	Go to Pinpoint Test O .
The climate controlled seat module does not respond to the scan tool	Fuse Wiring, terminals or connectors Climate controlled seat module	Go to Pinpoint Test P .
The parking aid module does not respond to the scan tool	Fuse Wiring, terminals or connectors Parking aid module	Go to Pinpoint Test Q .
The power liftgate module does not respond to the scan tool	Fuse Wiring, terminals or connectors Power liftgate module	Go to Pinpoint Test R .
No medium speed controller area network (MS-CAN) communication, all modules are not responding	Wiring, terminals or connectors Audio unit SJB Instrument cluster THX® amplifier (if equipped) Satellite radio receiver (if equipped) Climate controlled seat module (if equipped) DVD player (if equipped) DSM (if equipped) EATC module (if equipped) Parking aid module (if equipped) Power liftgate module (if equipped)	Go to Pinpoint Test S .
No high speed controller area network (HS-CAN) communication, all modules are not responding	Wiring, terminals or connectors PCM ABS module RCM Instrument cluster Occupant classification sensor module 4WD control module (if equipped) Adaptive headlamp module (if equipped) Steering angle sensor module (if equipped)	Go to Pinpoint Test T .
No power to the scan tool	Fuse Wiring, terminals or connectors Scan tool	Go to Pinpoint Test U .