DTC B1013:11 [BCM]
id0902f5930900
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DESCRIPTION |
Rear window defroster switch circuit malfunction |
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DETECTION CONDITION
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• Short to ground in the rear window defroster switch circuit with the rear window defroster switch off.
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POSSIBLE CAUSE
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• Climate control unit connector or terminals malfunction
• BCM connector or terminals malfunction
• Short to ground in wiring harness between climate control unit terminal 2O and BCM terminal 2R
• Climate control unit malfunction
• BCM malfunction
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Diagnostic Procedure
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STEP |
INSPECTION |
ACTION |
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1
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CONFIRM BCM DTC
• Clear the DTC using the M-MDS.
(See CLEARING DTC [BCM].)
• Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)
• Is the same DTC present?
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Yes
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Go to the next step.
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No
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Go to Step 7.
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2
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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?
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Yes
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Repair or replace the connector or terminals, then go to Step 6.
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No
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Go to the next step.
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3
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INSPECT BCM CONNECTOR AND TERMINALS
• Disconnect the BCM connector.
• Inspect the connector and terminals (corrosion, damage, pin disconnection).
• Is there any malfunction?
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Yes
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Repair or replace the connector or terminals, then go to Step 6.
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No
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Go to the next step.
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4
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INSPECT REAR WINDOW DEFROSTER SWITCH CIRCUIT FOR SHORT TO GROUND
• Verify that the climate control unit and BCM connectors are disconnected.
• Inspect for continuity between climate control unit terminal 2O (wiring harness-side) and body ground.
• Is there continuity?
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Yes
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Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
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No
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Go to the next step.
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5
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INSPECT CLIMATE CONTROL UNIT
• Make sure to reconnect all disconnected connectors.
• Reconnect the negative battery cable.
• Measure the voltage at the climate control unit terminal 2O (wiring harness-side).
• Is the voltage normal?
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Yes
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Go to the next step.
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No
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Replace the climate control unit, then go to the next step.
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6
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VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Reconnect the negative battery cable.
• Clear the DTC using the M-MDS.
(See CLEARING DTC [BCM].)
• Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the BCM.
Go to the next step.
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No
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Go to the next step.
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7
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VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [BCM].)
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No
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DTC troubleshooting completed.
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