DTC C1189[PJB]
id090208836600
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DTC C1189 |
Brake fluid level sensor input circuit open |
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DETECTION CONDITION
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Open circuit in wiring harness between PJB and brake fluid level sensor
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POSSIBLE CAUSE
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• Open circuit in wiring harness between PJB terminal J-01 AL and brake fluid level sensor terminal B
• Open circuit in wiring harness between brake fluid level sensor terminal A and body GND
• Brake fluid level sensor malfunction
• PJB malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT BRAKE FLUID LEVEL SENSOR CONNECTOR
• Turn the ignition switch off.
• Disconnect the brake fluid level sensor connector.
• Inspect the brake fluid level sensor connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 5.
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No
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Go to the next step.
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2
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INSPECT PJB CONNECTOR
• Disconnect the PJB connector.
• Inspect the PJB connector terminals for poor connection (such as damaged/pulled-out pins, and corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the terminal, then go to Step 5.
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No
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Go to the next step.
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3
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INSPECT BRAKE FLUID LEVEL SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity between following terminals:
• Is there continuity?
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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 wiring harness for a possible open circuit, then go to Step 5.
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4
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INSPECT BRAKE FLUID LEVEL SENSOR
• Inspect the brake fluid level sensor.
• Is there any malfunction?
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Yes
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Replace the brake fluid level sensor, then go to the next step.
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No
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Go to the next step.
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5
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VERIFY TROUBLESHOOTING COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PJB memory using the M-MDS.
• Perform the self-test.
(See PJB SELF-TEST[PJB].)
• Is the same DTC present?
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Yes
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Replace the PJB.
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No
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Troubleshooting completed.
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