DTC U2023 [ADVANCED KEYLESS ENTRY AND START SYSTEM]

DTC U2023 [ADVANCED KEYLESS ENTRY AND START SYSTEM]

id09021g630100

DTC U2023

Abnormal message from PCM

DETECTION CONDITION

• Correct data cannot be received from PCM

POSSIBLE CAUSE

• PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	INSPECT FOR PCM MALFUNCTION • Turn the ignition switch to LOCK position. • Using the M-MDS, perform the DTC inspection for the PCM. (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7 (PCM CONNECTOR (2 TYPES))].) (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7 (PCM CONNECTOR (3 TYPES))].) • Are any DTCs detected?	Yes	Go to applicable DTC inspection. (See DTC TABLE [MZI-3.7 (PCM CONNECTOR (2 TYPES))].) (See DTC TABLE [MZI-3.7 (PCM CONNECTOR (3 TYPES))].)
1		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].)
2		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].)
3		No	DTC troubleshooting completed.