NO. 5 BRAKE SYSTEM WARNING LIGHT ILLUMINATES [INSTRUMENT CLUSTER]
id0903d5807800
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5 |
Brake system warning light illuminates |
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POSSIBLE CAUSE
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• ABS CM malfunction
• Brake fluid level sensor malfunction
• Parking brake switch malfunction
• Instrument cluster malfunction
• Connector or pin malfunction
• Short to GND circuit between instrument cluster and ABS CM
• Short to GND circuit between instrument cluster and parking brake switch
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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• Start the engine.
• Release the parking brake.
• Does the brake system warning light turn off?
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Yes
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Troubleshooting completed.
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No
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Go to the next step.
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2
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• Are there a number of warning lights illuminated?
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Yes
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Go to Step 4.
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No
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Go to the next step.
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3
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• Does the brake fluid need replenishment?
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Yes
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Add brake fluid.
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No
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Go to the next step.
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4
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• Connect the M-MDS to DLC-2.
• Retrieve the on-demand and continuous memory DTC from ABS CM.
• Is there any DTC displayed?
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Yes
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Perform the appropriate DTC troubleshooting procedure.
(See ON-BOARD DIAGNOSIS.)
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No
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Go to the next step
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5
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• Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch off.
• Inspect the instrument cluster connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Are the terminals normal?
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Yes
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Go to the next step.
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No
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Repair or replace the terminal.
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6
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• Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to LOCK position.
• Connect the instrument cluster connector.
• Disconnect the parking brake switch and ABS CM connectors.
• Short to GND at parking brake switch terminal A using the jumper wire.
• Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to ON position.
• Does the auto leveling warning light illuminate?
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Yes
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Inspect parking brake switch and replace as necessary.
If normal, replace the ABS CM.
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No
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Go to the next step.
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7
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• Turn the ignition (F2, G6)/engine (WE-C, WL-3, WL-C, WLT-1, WLT-2) switch to LOCK position.
• Disconnect the instrument cluster connector (with ABS CM and parking brake switch connectors disconnected).
• Verify continuity between instrument cluster terminal 2L and GND.
• Is there continuity?
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Yes
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Repair or replace for short to GND.
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No
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Replace the instrument cluster.
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