Inspection & Verification

WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.

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: When working on the starter system, make sure the anti-theft system is operational.

Verify the customer concern by operating the starting system.

Visually inspect for obvious signs of mechanical and electrical damage. Refer to the following chart.

VISUAL INSPECTION CHART

Mechanical	Electrical
Starter motor Starter solenoid Flexplate	Battery Battery Junction Box (BJB) fuse(s): 105 (30A) 1 (30A) Central Junction Box (CJB) fuse 1 (10A) Damaged wiring harness Loose or corroded connections Starter relay Anti-theft system

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 DIAGNOSTIC TESTS article, No Power To The Scan Tool, to diagnose no power to 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 DIAGNOSTIC TESTS 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 DIAGNOSTIC TESTS article.
- If the network test passes, retrieve and record Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Clear the continuous DTCs and carry out the self-test diagnostics for the instrument cluster and PCM.
If the DTCs retrieved are related to the concern, go to PCM DIAGNOSTIC TROUBLE CODE INDEX or the PASSIVE ANTI-THEFT SYSTEM (PATS) - DIAGNOSTIC TROUBLE CODE INDEX . For all other DTCs, refer to DIAGNOSTIC TESTS article.
If no DTCs related to the concern are retrieved, go to Symptom Chart .

PCM DIAGNOSTIC TROUBLE CODE INDEX

DTC	Description	Action
P0705	Digital Transmission Range (TR) Sensor Circuit Failure	Refer to the appropriate Automatic Transmission article for the procedure.
P0708	Digital TR Sensor Circuit Open	Refer to the appropriate Automatic Transmission article for the procedure.
P1702	Intermittent DTC P0705 or P0708	Refer to the appropriate Automatic Transmission article for the procedure.
P1704	Digital TR Circuit Reading in Between Gear Position During Key ON Engine OFF (KOEO)/Key ON Engine Running (KOER)	Refer to the appropriate Automatic Transmission article for the procedure.
P1705	Digital TR Self Test Was Not Carried Out in PARK or NEUTRAL	Refer to the appropriate Automatic Transmission article for the procedure.

PASSIVE ANTI-THEFT SYSTEM (PATS) - DIAGNOSTIC TROUBLE CODE INDEX

DTC	Description	Source	Action
B1213	Anti-Theft Number of Programmed Keys is Below Minimum	PCM	REFER to DIAGNOSTIC TESTS article.
B1342	Electronic Control Unit (ECU) is Defective	PCM	CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS article.
B1600	Passive Anti-Theft System (PATS) Ignition Key Transponder Signal is Not Received	PCM	REFER to DIAGNOSTIC TESTS article.
B1601	PATS Received Incorrect Key-Code From Ignition Key Transponder	PCM	REFER to DIAGNOSTIC TESTS article.
B1602	PATS Received Invalid Format of Key-Code From Ignition Key Transponder	PCM	REFER to DIAGNOSTIC TESTS article.
B1681	PATS Transceiver Module Signal is Not Received	PCM	REFER to DIAGNOSTIC TESTS article.
B2103	Antenna Not Connected	PCM	REFER to DIAGNOSTIC TESTS article.
B2431	Transponder Programming Failed	PCM	REFER to DIAGNOSTIC TESTS article.
P1260	Theft Detected, Vehicle Immobilized	PCM	If there are any other PATS DTCs, ADDRESS them first. If DTC P1260 is the only DTC present, there may be a power or ground issue with the PCM. REFER to the Introduction - Gasoline Engines article.