Pinpoint Test K: The Odometer Is Inoperative

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test K: The Odometer Is Inoperative

Normal Operation

The Instrument Cluster (IC) receives the odometer rolling count data from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus. The IC monitors the odometer rolling count input from the PCM and commands the odometer with a display in the integrated display area (base IC) or the message center display (message center IC).

If the IC does not receive the odometer rolling count data from the PCM for more than 5 seconds, the IC sets DTC U0100 in continuous memory and defaults the odometer display to all dashes (-----). If the odometer rolling count data is deemed invalid by the IC, the IC sets DTC U2023 and defaults the odometer display to all dashes (-----).

NOTE: If DTC U0100 is set in the IC, other observable symptoms may be an inoperative speedometer, tachometer, temperature gauge.

- DTC B2143 (NVM Memory Failure) - a continuous and on-demand DTC that sets if the IC Non-Volatile Memory (NVM) is corrupted. If the IC determines the NVM to be corrupt, the IC sets DTC B2143 and displays ERROR in the integrated display area (base IC) or message center display (message center IC).

This pinpoint test is intended to diagnose the following:

- PCM
- IC



PINPOINT TEST K: THE ODOMETER IS INOPERATIVE

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K1 CHECK FOR CORRUPTED NVM


- Ignition ON.
- Observe the message center display area.
- Does the odometer display ERROR?

Yes
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

No
GO to K2.

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K2 RETRIEVE THE RECORDED DTCs FROM THE PCM KOEO SELF-TEST


- Check the recorded PCM DTCs from the Key ON Engine OFF (KOEO) self-test.
- Are any DTCs recorded?

Yes
REFER to Computers and Control Systems Information.

No
GO to K3.

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K3 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded IC DTCs from the self-test.
- Are any DTCs recorded?

Yes
For DTC U0100, GO to Pinpoint Test BD. Pinpoint Tests BD: DTC U0100

For DTC U2023, RETRIEVE and REPAIR all non-network DTCs in the PCM and other modules on the network. REFER to Computers and Control Systems Information and Body Control Systems for a list of all DTCs.

For DTC B2143, INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

For all other DTCs, REFER to DTC Charts. Instrumentation, Message Center and Warning Chimes

No
INSTALL a new PCM. REFER to Computers and Control Systems. TEST the system for normal operation.

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