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When the parking brake switch is turned ON, the combination meter terminal No. 4 is earthed,
and the brake warning lamp illuminates.
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This may be caused by ground fault in the parking brake switch circuit.
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- Low brake fluid level
- Damaged wiring harness and connectors
- Parking brake switch malfunction
- Combination meter malfunction
- Malfunction of ETACS-ECU
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Q.
Is the check result normal?
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Add brake fluid to the specified level.
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Refer to GROUP 35A - On-vehicle Service .
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Q.
Is the check result normal?
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Replace the reservoir assembly and master cylinder assembly.
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- Measure the voltage between the terminal No. 1 and the body earth.
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Repair the defective connector.
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Q.
Is the check result normal?
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Check the wiring harness between the C-312 ETACS-ECU connector terminal No. 1
and the A-10 brake fluid level switch connector terminal No. 1.
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Refer to GROUP 36 - On-vehicle Service .
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Q.
Is the check result normal?
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Adjust the parking brake lever stroke, and then go to Step 10.
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Refer to GROUP 36 - On-vehicle Service .
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Q.
Is the check result normal?
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Replace the parking brake switch.
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- Measure the voltage between terminal No. 4 and body earth.
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Q.
Is the check result normal?
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Replace the combination meter assembly, and then go to Step 10.
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Q.
Is the check result normal?
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Repair the wiring harness between the C-03 combination meter connector terminal
No. 4 and the D-124 parking brake switch connector.
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Repair the defective connector.
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Q.
Does the brake warning lamp turn ON and OFF normally according to the parking brake
lever operation?
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The procedure is complete.
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