ELECTRIC PARKING BRAKE WARNING LIGHT TURNS ON [ELECTRIC PARKING BRAKE (US)]
ELECTRIC PARKING BRAKE WARNING LIGHT TURNS ON [ELECTRIC PARKING BRAKE (US)]
SM2565947
id040328250334
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Troubleshooting item |
Electric parking brake warning light turns on |
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Description
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• Electric parking brake warning light turns on.
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Possible cause
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• DSC HU/CM malfunction
• Instrument cluster malfunction
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System wiring diagram
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• Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Results |
Action |
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1
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VERIFY ALL SYSTEM DTCs
• Switch the ignition off.
• Switch the ignition ON (engine off or on) and wait for 10 s or more.
• Perform a DTC inspection using the M-MDS. (See DTC INSPECTION.)
• Are any DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [DSC HU/CM (US)].)
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No
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Go to the next step.
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2
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DETERMINE IF CAUSE OF MALFUNCTION IS DSC HU/CM OR INSTRUMENT CLUSTER
• Ignition is switched ON (engine off)
• Does the electric parking brake warning light turn on/off?
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Yes
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Replace the DSC HU/CM.
Perform the repair completion verification.
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No
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Replace the instrument cluster.
Perform the repair completion verification.
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Repair completion verification
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VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Has the malfunction symptom been eliminated?
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Yes
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Complete the symptom troubleshooting.
Explain to the customer what has been repaired.
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No
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
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