DTC P0668 [ZJ, Z6]

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DTC P0668 [ZJ, Z6]

B3E010200600W04

DTC P0668 | PCM temperature sensor circuit low input
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DETECTION CONDITION

• The PCM monitors the PCM temperature sensor (integrated in the PCM) signal. If the PCM detects that the PCM temperature sensor voltage is 0.10 V or less, the PCM determines that the PCM temperature sensor has a malfunction.
Diagnostic support note
• This is a continuous monitor (Other).
• The MIL does not illuminate.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• FREEZE FRAME DATA is not available.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE | • PCM temperature sensor malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.

3

VERIFY TROUBLESHOOTING OF DTC P0668 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?

Yes

Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [ZJ, Z6].)

No | Go to the next step.
4 | VERIFY AFTER REPAIR PROCEDURE • Perform "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [ZJ, Z6].) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [ZJ, Z6].)
No | Troubleshooting completed.