Inspection and Verification

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

VISUAL INSPECTION CHART

Mechanical	Electrical
Ignition key Ignition switch Multi-function switch Steering column shrouds	Park detection switch (part of the transmission selector lever assembly) Battery junction box (BJB) fuse 35 (10A) Smart junction box (SJB) fuse 27 (20A) SJB Wiring, terminals and connectors

NOTE: For multi-function switch concerns, refer to one of the following sections:

For exterior lighting, refer to EXTERIOR LIGHTING article.
For wipers and washers, refer to WIPERS AND WASHERS article.

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 SJB.
If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) 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 .

SMART JUNCTION BOX (SJB) DTC CHART

DTC	Description	Source	Action
B1352	Ignition Key-In Circuit Failure	Smart junction box (SJB)	Go to Pinpoint Test G .
B2A20	Ignition stuck in START	SJB	Go to Pinpoint Test E .
B2844	Ignition fault	SJB	Go to Pinpoint Test F .
U2472	Unexpected Ignition State	SJB	Go to Pinpoint Test F .
-	All Other SJB DTCs	SJB	REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article.