Inspection and Verification
WARNING: This page is about a different car, the 2009 Mercury Milan, 2009 Lincoln MKZ, and 2009 Ford Fusion. 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 electrical damage.VISUAL INSPECTION CHART
Electrical - Smart Junction Box (SJB) fuse 28 (10A)
- Wiring, terminals or connectors
- Parking Aid Module (PAM)
- Parking aid sensors
- Parking aid speaker
- 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).
- 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 the continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the PAM.
- If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to MULTIFUNCTION ELECTRONIC MODULES article.
- If no DTCs related to the concern are retrieved, go to SYMPTOM CHART .
NOTE:
Make sure to use the latest scan tool software release.
NOTE:
The Vehicle Communication Module (VCM) LED prove-out confirms power and ground from the DLC are provided to the VCM.
NOTE:
Follow the non-network DTC diagnostics (B-codes, C-codes, P-codes) prior to the network DTC diagnostics (U-codes).
PARAMETER IDENTIFICATION (PID) CHART
| PID | Description |
|---|---|
| IGN_V | Ignition voltage |
| LRI_DIST | Left rear inner sensor distance to object |
| LRO_DIST | Left rear outer sensor distance to object |
| RRI_DIST | Right rear inner sensor distance to object |
| RRO_DIST | Right rear outer sensor distance to object |
| LRI_ATTEN | Left rear inner sensor attenuation |
| LRO_ATTEN | Left rear outer sensor attenuation |
| RRI_ATTEN | Right rear inner sensor attenuation |
| RRO_ATTEN | Right rear outer sensor attenuation |
| TRANSGR | Transmission gear position |