DTC B1013:11 [BCM]

id0902f5930900

DESCRIPTION

Rear window defroster switch circuit malfunction
DETECTION CONDITION
•  Short to ground in the rear window defroster switch circuit with the rear window defroster switch off.
POSSIBLE CAUSE
•  Climate control unit connector or terminals malfunction
•  BCM connector or terminals malfunction
•  Short to ground in wiring harness between the following terminals:
―  Climate control unit terminal 2O—BCM terminal 2R
•  Climate control unit malfunction
•  BCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
CONFIRM BCM DTC
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS with the rear window defroster switch off.
•  Is the same DTC present?
Yes
Go to the next step.
No
Go to Step 7.
2
INSPECT CLIMATE CONTROL UNIT CONNECTOR AND TERMINALS
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the climate control unit connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
3
INSPECT BCM CONNECTOR AND TERMINALS
•  Disconnect the BCM connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 6.
No
Go to the next step.
4
INSPECT REAR WINDOW DEFROSTER SWITCH CIRCUIT FOR SHORT TO GROUND
•  Climate control unit and BCM connectors are disconnected.
•  Inspect for continuity between the following terminal (wiring harness-side) and body ground:
―  Climate control unit terminal 2O
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
No
Go to the next step.
5
INSPECT CLIMATE CONTROL UNIT
•  Reconnect the climate control unit and BCM connectors.
•  Reconnect the negative battery cable.
•  Measure the voltage at the following terminal (wiring harness-side):
―  Climate control unit terminal 2O
•  Is the voltage normal?
Yes
Replace the climate control unit, then go to the next step.
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
No
Go to the next step.
6
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS with the rear window defroster switch off.
•  Is the same DTC present?
Yes
Replace the BCM, then go to the next step.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [L.H.D.].)
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [R.H.D.].)
No
Go to the next step.
7
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [BCM].)
No
DTC troubleshooting completed.