Pinpoint Tests AJ: The Regen Braking Disable Message Is Inoperative/Always On

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

Pinpoint Test AJ: The REGEN BRAKING DISABLED Message Is Inoperative/Always On (Hybrid)

Normal Operation

The Instrument Cluster (IC) receives the regenerative brake disabled status from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus. If the regenerative braking system is disabled, the PCM sends a command to the IC to display the regenerative braking disabled message.

If the regenerative braking message is missing, the IC sets DTC U0100 in continuous memory and the regenerative braking disabled message remains in the last indication mode (on or off). If the regen braking message is deemed invalid by the IC, the IC defaults the regenerative braking disabled message off.

This pinpoint test is intended to diagnose the following:

- PCM
- IC




PINPOINT TEST AJ: THE REGEN BRAKING DISABLED MESSAGE IS INOPERATIVE/ALWAYS ON (HYBRID)

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AJ1 RETRIEVE THE RECORDED 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 Information.

No
GO to AJ2.

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AJ2 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST



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

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

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

No
INSTALL a new IC. REFER to Instrument Cluster (IC) Instrument Cluster (IC). TEST the system for normal operation.

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