Inspection and Verification

WARNING: Always disconnect the battery ground cable at the battery before disconnecting the starter motor battery terminal lead. If a tool is shorted at the starter motor battery terminal, the tool can quickly heat enough to cause a skin burn. Failure to follow this instruction may result in serious personal injury.

NOTE: The anti-theft system must be functioning correctly before a logical starting system diagnosis can be carried out. Address anti-theft system concerns before continuing. Refer to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS)

Verify the customer concern by operating the starting system to duplicate the conditions.
Remove the accessory drive belt. Refer to ACCESSORY DRIVE - 2.3L , ACCESSORY DRIVE - 3.0L (4V) or ACCESSORY DRIVE - 3.5L . Verify the crankshaft and each of the components driven by the accessory drive belt rotate and are not seized or damaged.

Inspect to determine if any of the following mechanical or electrical concerns apply.

VISUAL INSPECTION CHART

Mechanical	Electrical
Starter motor Starter motor bolts Flexplate Flywheel	Battery Battery Junction Box (BJB) fuse 14 (15A) Smart Junction Box (SJB) fuse 10 (30A) Wiring harness Starter motor relay - non-serviceable (part of SJB) Anti-theft system Loose or corroded connections

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

NOTE: Make sure to use the latest scan tool software release.

If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).

NOTE: The vehicle Communication Module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.

If the scan tool does not communicate with the VCM:
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- refer to MODULE COMMUNICATIONS NETWORK article, No Power To The Scan Tool, to diagnose no communication with the scan tool.
If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to MODULE COMMUNICATIONS NETWORK article to diagnose no response from the PCM.
Carry out the network test.
- If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK article.
- If the network test passes, retrieve and record continuous memory DTCs.
Clear the continuous DTCs and carry out the self-test diagnostics for the PCM.
If the DTCs retrieved are related to the concern, go to PCM DTC Chart or the Passive Anti-Theft System (PATS) DTC Chart. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
If no DTCs related to the concern are retrieved, go to SYMPTOM CHART .

PCM DTC CHART

DTC	Description	Source	Action
P0512	Starter Request Circuit - Circuit has Power With the Ignition in the OFF Position	PCM	CARRY OUT the Ignition Switch Component Test. Refer to COMPONENT TESTING . If necessary, INSTALL a new ignition switch. If the ignition switch passed the component test, REPAIR circuit CDC35 (BU/WH) for a short to power.
P0706	TR Sensor Circuit Failure	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P0707	TR circuit low input	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P0708	TR circuit high input	PCM	Refer to the appropriate Automatic Transmission article for the procedure.
P0704	Clutch switch input circuit	PCM	REFER to INTRODUCTION - GASOLINE ENGINES article.
P0830	Clutch Pedal Switch A Circuit	PCM	REFER to INTRODUCTION - GASOLINE ENGINES article.
P0833	Clutch Pedal Switch B Circuit	PCM	REFER to INTRODUCTION - GASOLINE ENGINES article.
P1260	Theft Detected, Vehicle Immobilized	PCM	REFER to DTC Chart in ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) .

PASSIVE ANTI-THEFT SYSTEM (PATS) - DTC CHART

DTC	Description	Source	Action
B1213	Anti-Theft Number of Programmed Keys is Below Minimum	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1342	ECU is Faulted	Instrument Cluster	CLEAR the DTCs. CARRY OUT the instrument cluster self-test. If DTC B1342 is retrieved, INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER (IC), MESSAGE CENTER, AND WARNING CHIMES article.
B1600	PATS Key Transponder Signal is Not Received - Damaged Key or Non-PATS Key	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1601	PATS Received Incorrect Key-Code From Ignition Key Transponder (Unprogrammed PATS Key)	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1602	PATS Received Invalid Format of Key-Code From Ignition Key Transponder (Partial Key Read)	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B1681	PATS Transceiver Module Signal is Not Received (Damaged, Not Connected or Damaged Wiring)	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B2103	Defective Transceiver	Instrument Cluster	INSTALL a new PATS transceiver. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B2141	NVM Memory Failure (No Target ID Stored in Instrument Cluster)	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.
B2431	Transponder Programming Failed	Instrument Cluster	REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article.