DTC U2023 [ADVANCED KEYLESS ENTRY AND START SYSTEM]SM2445799
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 [L3 Turbo].) (See ON-BOARD DIAGNOSTIC TEST [L5].) (See ON-BOARD DIAGNOSTIC TEST [MZR-CD 2.2].)
• Are any DTCs detected?
Yes
Go to applicable DTC inspection.
(See DTC TABLE [L3 Turbo].)
(See DTC TABLE [L5].)
(See DTC TABLE [MZR-CD 2.2].)
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 [L3 Turbo].)
(See PCM REMOVAL/INSTALLATION [L5].)
(See PCM REMOVAL/INSTALLATION [MZR-CD 2.2].)
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].)
No
DTC troubleshooting completed.