Pinpoint Test V: The Oil Change Minder Indicator Is Never/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Test V: The Oil Change Minder Indicator Is Never/Always On

Normal Operation

The oil change minder indicator informs the driver that the vehicle requires an oil change. The Instrument Panel Cluster (IPC) receives the oil change minder indicator request from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus. When the PCM has determined that the criteria for vehicle mileage or length of time has been met, the PCM sends a request to the IPC to illuminate the oil change minder indicator.

If the oil change minder indicator request is missing or if the data is deemed invalid for less than 5 seconds, the oil change minder indicator remains in the last indication mode (on or off) based on the last known good request received. If the oil change minder indicator request is missing for more than 5 seconds, the IPC sets DTC U0100:00 in continuous memory and defaults the oil change minder indicator off.

NOTE: If DTC U0100:00 sets in the IPC, other observable symptoms may be an inoperative speedometer, tachometer or odometer.

This pinpoint test is intended to diagnose the following:

- PCM
- IPC

PINPOINT TEST V: THE OIL CHANGE MINDER INDICATOR IS NEVER/ALWAYS ON

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V1 CARRY OUT THE IPC DEALER TEST MODE

- Ignition ON.
- Enter the IPC dealer test mode. Scroll through the displays until LED is displayed.
- Does the oil change minder indicator illuminate when in the dealer test mode and turn off during normal operation?

Yes
GO to V2.

No
INSTALL a new IPC. REFER to Instrument Panel Cluster (IPC) Service and Repair. TEST the system for normal operation.

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V2 CARRY OUT THE OIL LIFE RESET PROCEDURE

- Reset the oil minder. Refer to Message Center Configuration Service and Repair.
- Does the oil change minder indicator turn off?

Yes
The system is operating correctly at this time.

No
GO to V3.

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V3 RETRIEVE AND RECORD THE DTCs FROM THE PCM KOEO SELF-TEST

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

Yes
REFER to Computers and Control Systems.

No
GO to V4.

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V4 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST

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

Yes
For DTC U0100:00, GO to Pinpoint Test AM. For all other DTCs, REFER to DTC Charts. Pinpoint Tests AM: DTC U0100:00 and P1607:87

No
INSTALL a new PCM. REFER to Electronic Engine Controls Service and Repair. TEST the system for normal operation.

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