DTC U3000:4B [REAR VEHICLE MONITORING SYSTEM]

id0902z2888400

Description

Temperature temporarily increases depending on various external and environmental factors (Rear vehicle monitoring control module (LH) or (RH))

Detection condition

•  Rear vehicle monitoring control module internal temperature of 105 °C {221 °F} or more detected for 10 s or more.

Fail-safe function

•  Inhibits the rear vehicle monitoring system.

Possible cause

•  Temporary rise in temperature due to some external environment factor

•  Rear vehicle monitoring control module (RH) malfunction

•  Rear vehicle monitoring control module (LH) malfunction

System wiring diagram

Not applicable

Description	Temperature temporarily increases depending on various external and environmental factors (Rear vehicle monitoring control module (LH) or (RH))
Detection condition	• Rear vehicle monitoring control module internal temperature of 105 °C {221 °F} or more detected for 10 s or more.
Fail-safe function	• Inhibits the rear vehicle monitoring system.
Possible cause	• Temporary rise in temperature due to some external environment factor • Rear vehicle monitoring control module (RH) malfunction • Rear vehicle monitoring control module (LH) malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY REAR VEHICLE MONITORING CONTROL MODULE INTERNAL TEMPERATURE • Display the following PIDs using the M-MDS. (See PID/DATA MONITOR INSPECTION [REAR VEHICLE MONITORING SYSTEM].) ― INTNL_TMP_L ― INTNL_TMP_R • Is the value 105 °C {221 °F} or more?	Yes	Replace the malfunctioning rear vehicle monitoring control module, then go to Step 3. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
1		No	Go to the next step.
2	PERFORM DTC INSPECTION AND VERIFY REAR VEHICLE MONITORING CONTROL MODULE (RH) MALFUNCTION • Clear the DTC for the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Switch the ignition ON (engine off or on) and wait for 11.5 s or more. • Retrieve the rear vehicle monitoring control module DTCs using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC displayed?	Yes	Replace the rear vehicle monitoring control module (RH), then go to the next step. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
2		No	Go to Step 4.
3	PERFORM DTC INSPECTION AND VERIFY REAR VEHICLE MONITORING CONTROL MODULE (LH) MALFUNCTION • Clear the DTC for the rear vehicle monitoring control module using the M-MDS. (See CLEARING DTC [REAR VEHICLE MONITORING SYSTEM].) • Switch the ignition ON (engine off or on) and wait for 11.5 s or more. • Retrieve the rear vehicle monitoring control module DTCs using the M-MDS. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the rear vehicle monitoring control module (LH). (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
3		No	Go to the next step.
4	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [REAR VEHICLE MONITORING SYSTEM].)
4		No	DTC troubleshooting completed.