DTC U2023 [ADVANCED KEYLESS ENTRY AND START SYSTEM]

id09021g630100

DTC U2023 | Abnormal message from PCM
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DETECTION CONDITION | • Correct data cannot be received from PCM
POSSIBLE CAUSE | • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | INSPECT FOR PCM MALFUNCTION • Turn the ignition switch to OFF position. • Using the M-MDS, perform the DTC inspection for the PCM. (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7].) • Are any DTCs detected? | Yes | Go to applicable DTC inspection. (See DTC TABLE [MZI-3.7].)
No | Go to the next step.
2 | VERIFY THAT THE SAME DTC IS NOT PRESENT • Clear the DTCs from the memory. (See CLEARING DTC [ADVANCED KEYLESS ENTRY AND START SYSTEM].) • Are the same DTCs present? | Yes | Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7].)
No | Go to the next step.
3 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See DTC INSPECTION [ADVANCED KEYLESS ENTRY AND START SYSTEM].)
No | DTC troubleshooting completed.