Test Procedure
- QF1 CHECK FOR DTCS
Are any DTCs present other than P0600, P060A, P060B, P060C, P060D, P061A, P1674, or U0300?
Yes No RETURN to ENGINE CONTROLS - SYMPTOM CHARTS (HYBRID) for further direction. GO to QF2 . - QF2 CHECK THE PCM VOLTAGE CIRCUITS FOR AN OPEN
- Ignition OFF.
- PCM connector disconnected.
- Connect a 5 amp fused jumper wire between the following:
Point A PCM Connector, Harness Side Point B PCMRC - Pin B1 Ground - Ignition ON, engine OFF.
- Measure the voltage between:
(+) PCM Connector, Harness Side (-) VPWR - Pin B11, B12 Ground
Is the voltage greater than 10.5 V?
Yes No For DTC P061A, GO to QF4.
For all others, GO to QF3 .REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. - QF3 CHECK THE PCM FOR THE LATEST CALIBRATION
- Ignition OFF.
- Remove the jumper wire(s).
- PCM connector connected.
- Program the PCM to the latest calibration.
- Ignition OFF.
- Ignition ON, engine OFF.
- Ignition OFF.
- Ignition ON, engine running.
- Use the customer information to recreate the concern.
- Carry out the PCM self-test.
Are DTCs P0600, P060A, P060B, P060C, P060D, P1674 or U0300 present?
Yes No GO to QF5. The concern is not present at this time. If a driveabilty concern exists,
RETURN to ENGINE CONTROLS - SYMPTOM CHARTS (HYBRID) for further direction. - QF4 VERIFY THE CUSTOMER CONCERN
- Clear the PCM DTCs.
- Use the customer information to recreate the concern.
- Carry out the PCM self-test.
Is DTC P061A present?
Yes No RESET the keep alive memory (KAM). REFER to RESETTING THE KEEP ALIVE MEMORY (KAM) .
GO to QF5 .The concern is not present at this time. - QF5 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Visually inspect for:
- pushed out pins
- corrosion
- Connect all the PCM connectors and make sure they seat correctly.
- Carry out the PCM self-test.
- Verify the concern is still present.
Is the concern still present?
Yes No INSTALL a new PCM. REFER to FLASH ELECTRICALLY ERASABLE PROGRAMMABLE READ ONLY MEMORY (EEPROM) , Programming the VID Block for a Replacement PCM. The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.