Diagnostic procedure

DTC C1189 DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	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?	Yes	Repair or replace the terminal, then go to Step 5.
1		No	Go to the next step.
2	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?	Yes	Repair or replace the terminal, then go to Step 5.
2		No	Go to the next step.
3	INSPECT BRAKE FLUID LEVEL SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between following terminals: PJB terminal J-01 AL (wiring harness-side) - brake fluid level sensor terminal B (wiring harness-side) Brake fluid level sensor terminal A (wiring harness-side) - body GND Is there continuity?	Yes	Go to the next step.
3		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 5.
4	INSPECT BRAKE FLUID LEVEL SENSOR Inspect the brake fluid level sensor. (See BRAKE FLUID LEVEL SENSOR INSPECTION .) Is there any malfunction?	Yes	Replace the brake fluid level sensor, then go to the next step.
4		No	Go to the next step.
5	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 ). Is the same DTC present?	Yes	Replace the PJB. (See PASSENGER JUNCTION BOX (PJB) REMOVAL/INSTALLATION .)
5		No	Troubleshooting completed.