Inspection and Verification

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

Verify the customer concern.
Verify the stoplamps operate correctly by pressing and releasing the brake pedal with the ignition switch in the ON position. If the stoplamps do not operate correctly, refer to STOPLAMPS . If the stoplamps operate correctly, proceed to the next step.

Visually inspect for obvious signs of mechanical or electrical damage.

VISUAL INSPECTION TABLE

Mechanical	Electrical
Base brake system Hydraulic Control Unit (HCU) Incorrectly inflated tires Mismatched wheels or tires on vehicle Steering wheel rotation sensor ring Wheel speed sensor tone ring	ABS module Battery Junction Box (BJB) fuse(s): 8 (40A) 10 (30A) Electronic Power Assist Steering (EPAS) gear (2.5L and 3.0L only) Restraints Control Module (RCM) Smart Junction Box (SJB) fuse 42 (10A) Stoplamp switch Traction control switch Steering wheel rotation sensor (3.5L only) Vacuum sensor (2.5L and 3.0L only) Wheel speed sensors Wiring, terminals or connectors

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the scan tool to the Data Link Connector (DLC).
NOTE: Make sure to use the latest scan tool software release.
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 PINPOINT TEST AF: NO POWER TO THE SCAN TOOL , to diagnose no power to the scan tool.
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 vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- refer to PINPOINT TEST A: THE PCM DOES NOT RESPOND TO THE SCAN TOOL 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 INSPECTION AND VERIFICATION .
- If the network test passes, retrieve and record Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Clear the CMDTCs and carry out the self-test diagnostics for the ABS module.
If the DTCs retrieved are related to the concern, go to ABS MODULE DTC TABLE . For all other DTCs, refer to DIAGNOSTIC TROUBLE CODE (DTC) TABLE .