DTC U0028:87 [REAR VEHICLE MONITORING SYSTEM]
id0902z2886700
Rear Vehicle Monitoring Control Module Connector 10-pin Type
System malfunction location |
Rear vehicle monitoring control module (LH) and (RH) communication error |
---|---|
Detection condition
|
• No communication between rear vehicle monitoring control modules (LH) and (RH) for 1 s or more.
|
Fail-safe
|
• Inhibits the rear vehicle monitoring system.
|
Possible cause
|
• Rear vehicle monitoring control module (LH) connector or terminal malfunction
• Rear vehicle monitoring control module (RH) connector or terminal malfunction
• Short to ground in wiring harness between the following terminals:
• Short to power supply in wiring harness between the following terminals:
• Open circuit in wiring harness between the following terminals:
• Rear vehicle monitoring control module (LH) malfunction
• Rear vehicle monitoring control module (RH) malfunction
|
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Diagnostic Procedure
Step |
Inspection |
Action |
|
---|---|---|---|
1
|
INSPECT REAR VEHICLE MONITORING CONTROL MODULE (LH) CONNECTOR
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Disconnect the rear vehicle monitoring control module (LH) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the connector, then go to Step 6.
|
||
2
|
INSPECT REAR VEHICLE MONITORING CONTROL MODULE (RH) CONNECTOR
• Disconnect the rear vehicle monitoring control modules (RH) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the connector, then go to Step 6.
|
||
3
|
INSPECT FOR SHORT TO GROUND IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Inspect for continuity between the following terminals (vehicle wiring harness side) and body ground.
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness which is shorted to ground, then go to Step 6.
|
No
|
Go to the next step.
|
||
4
|
INSPECT FOR SHORT TO POWER SUPPLY IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Connect the negative battery cable.
• Switch the ignition ON (engine off or on).
• Measure the voltage at the following terminals (vehicle wiring harness side).
• Is the voltage 0 V?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the wiring harness which is shorted to power supply, then go to Step 6.
|
||
5
|
INSPECT FOR OPEN CIRCUIT IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity.
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the wiring harness, then go to the next step.
|
||
6
|
PERFORM DTC INSPECTION AND VERIFY REAR VEHICLE MONITORING CONTROL MODULE (LH) MALFUNCTION
• Reconnect all the disconnected connectors.
• Reconnect the disconnected negative battery cable.
• 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 1.5 s or more.
• Perform the DTC inspection for the rear vehicle monitoring control module using the M-MDS.
• Is DTC U0028:87 displayed?
|
Yes
|
Repeat the inspection from Step 1.
• If the malfunction recurs, replace the rear vehicle monitoring control module (LH), then go to the next step.
|
No
|
Go to Step 8.
|
||
7
|
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.
• Switch the ignition ON (engine off or on) and wait for 1.5 s or more.
• Perform the DTC inspection for the rear vehicle monitoring control module using the M-MDS.
• Is DTC U0028:87 displayed?
|
Yes
|
Replace the rear vehicle monitoring control module (RH), then go to the next step.
|
No
|
Go to the next step.
|
||
8
|
VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning part according to the applicable DTC troubleshooting.
|
No
|
DTC troubleshooting completed.
|
Rear Vehicle Monitoring Control Module Connector 12-pin Type
System malfunction location |
Rear vehicle monitoring control module (LH) and (RH) communication error |
---|---|
Detection condition
|
• No communication between rear vehicle monitoring control modules (LH) and (RH) for 1 s or more.
|
Fail-safe
|
• Inhibits the rear vehicle monitoring system.
|
Possible cause
|
• Rear vehicle monitoring control module (LH) connector or terminal malfunction
• Rear vehicle monitoring control module (RH) connector or terminal malfunction
• Short to ground in wiring harness between the following terminals:
• Short to power supply in wiring harness between the following terminals:
• Open circuit in wiring harness between the following terminals:
• Rear vehicle monitoring control module (LH) malfunction
• Rear vehicle monitoring control module (RH) malfunction
|
![]() |
Diagnostic Procedure
Step |
Inspection |
Action |
|
---|---|---|---|
1
|
INSPECT REAR VEHICLE MONITORING CONTROL MODULE (LH) CONNECTOR
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Disconnect the rear vehicle monitoring control module (LH) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the connector, then go to Step 6.
|
||
2
|
INSPECT REAR VEHICLE MONITORING CONTROL MODULE (RH) CONNECTOR
• Disconnect the rear vehicle monitoring control modules (RH) connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the connector, then go to Step 6.
|
||
3
|
INSPECT FOR SHORT TO GROUND IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Inspect for continuity between the following terminals (vehicle wiring harness side) and body ground.
• Is there continuity?
|
Yes
|
Repair or replace the wiring harness which is shorted to ground, then go to Step 6.
|
No
|
Go to the next step.
|
||
4
|
INSPECT FOR SHORT TO POWER SUPPLY IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Connect the negative battery cable.
• Switch the ignition ON (engine off or on).
• Measure the voltage at the following terminals (vehicle wiring harness side).
• Is the voltage 0 V?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the wiring harness which is shorted to power supply, then go to Step 6.
|
||
5
|
INSPECT FOR OPEN CIRCUIT IN CAN COMMUNICATION CIRCUIT BETWEEN REAR VEHICLE MONITORING CONTROL MODULES (LH) AND (RH)
• Verify that the rear vehicle monitoring control module (LH) and (RH) connectors are disconnected.
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Inspect the wiring harness between the following terminals (vehicle wiring harness side) for continuity.
• Is there continuity?
|
Yes
|
Go to the next step.
|
No
|
Repair or replace the wiring harness, then go to the next step.
|
||
6
|
PERFORM DTC INSPECTION AND VERIFY REAR VEHICLE MONITORING CONTROL MODULE (LH) MALFUNCTION
• Reconnect all the disconnected connectors.
• Reconnect the disconnected negative battery cable.
• 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 1.5 s or more.
• Perform the DTC inspection for the rear vehicle monitoring control module using the M-MDS.
• Is DTC U0028:87 displayed?
|
Yes
|
Repeat the inspection from Step 1.
• If the malfunction recurs, replace the rear vehicle monitoring control module (LH), then go to the next step.
|
No
|
Go to Step 8.
|
||
7
|
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.
• Switch the ignition ON (engine off or on) and wait for 1.5 s or more.
• Perform the DTC inspection for the rear vehicle monitoring control module using the M-MDS.
• Is DTC U0028:87 displayed?
|
Yes
|
Replace the rear vehicle monitoring control module (RH), then go to the next step.
|
No
|
Go to the next step.
|
||
8
|
VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
|
Yes
|
Repair the malfunctioning part according to the applicable DTC troubleshooting.
|
No
|
DTC troubleshooting completed.
|