Test Procedure
- Z1 CHECK FOR DTCS
- Carry out a visual inspection.
- Carry out the PCM self-test.
- Record the freeze frame data.
- Clear the PCM DTCs.
- Carry out the PCM self-test.
Are DTCs P0603, P0606 or P2610 present?
Yes No GO to Z2 . The concern is not present at this time. CHECK for a loose connection, and damaged or corroded terminals. WIGGLE the harness attempting to recreate the concern. REPAIR as necessary.
RETURN to SYMPTOM CHARTS for further direction. - Z2 CHECK THE CHARGING SYSTEM
- Check the battery and charging system. Refer to the service information , Charging System, Inspection and Verification.
Is a concern present?
Yes No REPAIR as necessary. REFER to the service information , Charging System, Symptom Chart to diagnose the system voltage low or battery is discharged symptom or the system voltage high symptom.
Clear the PCM DTCs. REPEAT the self-test.GO to Z3 . - Z3 CHECK THE KAPWR CIRCUIT FOR VOLTAGE
- Ignition OFF.
- PCM-B connector disconnected.
- Ignition ON, engine OFF.
- Measure the voltage between:
(+) PCM-B Connector, Harness Side (-) KAPWR - Pin 62 Ground
Is the voltage greater than 10.5 V?
Yes No GO to Z4 . REPAIR the open circuit. Clear the PCM DTCs.
REPEAT the self-test. - Z4 CHECK FOR INTERMITTENT CIRCUIT CONCERNS
- PCM-B connector connected.
- Access the PCM and monitor the B_ (VOLT) and VPWR (VOLT) PIDs.
- While observing the PIDs, wiggle, shake, and bend small sections of the wiring harness to the PCM.
Is a concern present?
Yes No REPAIR as necessary.
Clear the PCM DTCs. REPEAT the self-test.For DTC P2610, GO to Z5 .
For all others, GO to Z6. - Z5 CHECK FOR ANY BODY CONTROL MODULE (BDYCM) DTCS
- Carry out the BdyCM self-test.
Are any DTCs present?
Yes No REFER to the service information , Multifunction Electronic Modules, to continue diagnosis. GO to Z6 . - Z6 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) . The system is operating correctly at this time.
The concern may have been caused by a loose or corroded connector.