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

id0902z2887800

Malfunction location

• Rear vehicle monitoring control module (LH)

Detection condition

• DTC U1A4B:43 Rear vehicle monitoring control module (LH) external RAM malfunction is detected

• DTC U1A4B:44 Rear vehicle monitoring control module (LH) internal RAM malfunction is detected

• DTC U1A4B:45 Rear vehicle monitoring control module (LH) ROM malfunction is detected

• DTC U1A4B:46 Rear vehicle monitoring control module (LH) EEPROM malfunction is detected

• DTC U1A4B:47 Rear vehicle monitoring control module (LH) external check system malfunction is detected

• DTC U1A4B:48 Rear vehicle monitoring control module (LH) communication circuit malfunction is detected

• DTC U1A4B:49 Rear vehicle monitoring control module (LH) voltage control circuit malfunction is detected

• DTC U1A4B:96 Rear vehicle monitoring control module (LH) internal circuit malfunction is detected

Possible Causes

• Rear vehicle monitoring control module (LH) malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY DTCs

•  Clear DTCs using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].)

•  Perform the rear vehicle monitoring control module DTC inspection.
(See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].)

•  Is DTC U1A4B:43, U1A4B:44, U1A4B:45, U1A4B:46, U1A4B:47, U1A4B:48, U1A4B:49, or U1A4B:96 is displayed?

Yes

Replace the rear vehicle monitoring control module (LH).

(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

2

VERIFY THAT NO OTHER DTCs ARE RECORDED

•  Clear DTCs using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].)

•  Perform the rear vehicle monitoring control module DTC inspection. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].)

•  Are any other DTCs displayed?

Yes

Perform the corresponding DTC inspection.

No

DTC troubleshooting completed.

Step	Inspection		Action
1	VERIFY DTCs • Clear DTCs using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Perform the rear vehicle monitoring control module DTC inspection. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is DTC U1A4B:43, U1A4B:44, U1A4B:45, U1A4B:46, U1A4B:47, U1A4B:48, U1A4B:49, or U1A4B:96 is displayed?	Yes	Replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
1		No	Go to the next step.
2	VERIFY THAT NO OTHER DTCs ARE RECORDED • Clear DTCs using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Perform the rear vehicle monitoring control module DTC inspection. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Are any other DTCs displayed?	Yes	Perform the corresponding DTC inspection.
2		No	DTC troubleshooting completed.