DTC B1046:11 [BCM]
id0902f5940100
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DESCRIPTION |
Front fog light switch circuit malfunction |
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DETECTION CONDITION
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• Short to ground in the front fog light switch circuit with the front fog light switch off.
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POSSIBLE CAUSE
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• Light switch connector or terminals malfunction
• Front fog light switch malfunction
• BCM connector or terminals malfunction
• Short to ground in wiring harness between the following terminals:
• 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 with the front fog light switch off.
(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 LIGHT SWITCH CONNECTOR AND TERMINALS
• Switch the ignition to off.
• Disconnect the negative battery cable.
• Disconnect the light switch 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 FRONT FOG LIGHT SWITCH
• Inspect the front fog light switch.
• Is there any malfunction?
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Yes
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Replace the light switch, 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 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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5
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INSPECT FRONT FOG LIGHT SWITCH CIRCUIT FOR SHORT TO GROUND
• Light switch and BCM connectors are disconnected.
• Inspect for continuity between the following terminal (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 the next step.
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No
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Go to the next step.
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6
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VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect the 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 with the front fog light switch off.
(See DTC INSPECTION [BCM].)
• Is the same DTC present?
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Yes
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Replace the BCM, then 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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