Ford ST2834-A - DTC Charts; Symptom Chart; Pinpoint Tests

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5. 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 Section 418-00, No Power To The Scan Tool, to diagnose no power to the scan tool.

6. 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 Section 418-00 to diagnose no response from the PCM.

7. Carry out the network test.

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If the scan tool responds with no communication for one or more modules, refer to Section 418-00.

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If the network test passes, retrieve and record the continuous memory DTCs.

8. Clear the continuous DTCs and carry out the self-test diagnostics for the FDIM and the Instrument Panel Cluster (IPC).

9. If the DTCs retrieved are related to the concern, go to DTC Charts. For all other DTCs, refer to the Diagnostic Trouble Code (DTC) Chart in Section

419-10.

10. If no DTCs related to the concern are retrieved, GO to Symptom Chart.

DTC Charts

NOTE:

This module utilizes a 5-character DTC followed by a 2-character failure-type code. The failure-type code provides information about specific fault

conditions such as opens, or shorts to ground. Continuous memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC

history.

Instrument Panel Cluster (IPC) DTC Chart

DTC Description Action

U0161:87 Lost Communication With Compass Module: Missing Message GO to Pinpoint Test A.

U0161:92 Lost Communication With Compass Module: Performance or

Incorrect Operation

GO to Pinpoint Test A.

All other DTCs — REFER to the Diagnostic Trouble Code (DTC) Chart in Section

419-10.

Symptom Chart

Condition Possible Sources Action

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