DTC U1A4B:43, U1A4B:44, U1A4B:45, U1A4B:46, U1A4B:47, U1A4B:48, U1A4B:49, U1A4B:96 [REAR VEHICLE MONITORING SYSTEM]


id0902z2887800

DESCRIPTION

Rear vehicle monitoring control module (LH) malfunction

DETECTION CONDITION
•  U1A4B:43
―  Rear vehicle monitoring control module (LH) external RAM malfunction
•  U1A4B:44
―  Rear vehicle monitoring control module (LH) internal RAM malfunction
•  U1A4B:45
―  Rear vehicle monitoring control module (LH) internal ROM malfunction
•  U1A4B:46
―  Rear vehicle monitoring control module (LH) internal EEPROM malfunction
•  U1A4B:47
―  Rear vehicle monitoring control module (LH) external check system malfunction
•  U1A4B:48
―  Rear vehicle monitoring control module (LH) communication circuit malfunction
•  U1A4B:49
―  Rear vehicle monitoring control module (LH) voltage control circuit malfunction
•  U1A4B:96
―  Rear vehicle monitoring control module (LH) internal circuit malfunction
POSSIBLE CAUSE
•  Rear vehicle monitoring control module (LH) malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC INSPECTION AND VERIFY THAT MALFUNCTIONING PART IS REAR VEHICLE MONITORING CONTROL MODULE (LH)
•  Clear the DTC from rear vehicle monitoring control module using the M-MDS.
•  Switch the ignition to ON and wait for 1.5 s or more.
•  Perform the rear vehicle monitoring control module DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Replace the rear vehicle monitoring control module (LH), then go to the next step.
No
Go to the next step.
2
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.