DTC U0415:68 [REAR VEHICLE MONITORING SYSTEM]

id0902z2885500

Description

Error signal received from DSC HU/CM
Detection condition
•  Rear vehicle monitoring control module (LH) receives the error signal from the DSC HU/CM for 2 s or more.
Fail-safe function
•  Inhibits the rear vehicle monitoring system.
Possible cause
•  DTCs are stored in the DSC HU/CM.
•  DTCs are stored in the instrument cluster.
•  Instrument cluster malfunction
•  DSC HU/CM malfunction
•  Rear vehicle monitoring control module (LH) malfunction
System wiring diagram
Not applicable

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY DSC HU/CM DTCs
•  Retrieve the DSC HU/CM DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)
No
Go to the next step.
2
VERIFY INSTRUMENT CLUSTER DTCs
•  Retrieve the instrument cluster DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER].)
No
Go to the next step.
3
INSPECT INSTRUMENT CLUSTER
•  Inspect the instrument cluster.
•  Is the instrument cluster normal?
Yes
Go to the next step.
No
Replace the instrument cluster, then go to Step 5.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
4
PERFORM DTC INSPECTION AND VERIFY DSC HU/CM MALFUNCTION
•  Clear the DTC for the rear vehicle monitoring control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 3.5 s or more.
•  Retrieve the rear vehicle monitoring control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Replace the DSC HU/CM, then go to the next step.
(See DSC HU/CM REMOVAL/INSTALLATION.)
No
Go to Step 6.
5
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear the DTC for the rear vehicle monitoring control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 3.5 s or more.
•  Retrieve the rear vehicle monitoring control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the rear vehicle monitoring control module (LH).
Go to the next step.
No
Go to the next step.
6
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].)
No
DTC troubleshooting completed.