DTC B1484, C1954 [DYNAMIC STABILITY CONTROL]


DTC	B1484, C1954		Brake switch system
DETECTION CONDITION		• B1484 - Open circuit in the wiring harness between the DSC HU/CM terminal and the brake switch terminal • C1954 - Brake switch ON signal is not input when the brake fluid pressure sensor signal reaches the specified value. - Brake switch ON signal is input even if the signal from the brake fluid pressure sensor is less than the specification.
POSSIBLE CAUSE		• Brake switch malfunction • Open circuit in the wiring harness between the DSC HU/CM terminal N and the brake switch terminal D


STEP	INSPECTION		ACTION
1	INSPECT DSC HU/CM TO BRAKE SWITCH FOR OPEN CIRCUIT • Turn the ignition switch off. • Disconnect the DSC HU/CM and brake switch connector. • Inspect for continuity DSC HU/CM terminal N and brake switch terminal D. • Is there continuity?	Yes	Go to the next step.
1		No	Repair or replace the wiring harness for open circuit between DSC HU/CM and brake switch, then go to the next step.
2	INSPECT BRAKE SWITCH • Inspect the brake switch. (See BRAKE SWITCH INSPECTION.) • Is the brake switch normal?	Yes	Go to the next step.
2		No	Replace the brake switch, then go to the next step. (See BRAKE PEDAL REMOVAL/INSTALLATION.)
3	VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the memory. (See Clearing DTCs Procedures.) • Are the same DTCs present?	Yes	Replace the DSC HU/CM, then go to the next step. (See DSC HU/CM REMOVAL/INSTALLATION.)
3		No	Go to the next step.
4	VERIFY AFTER REPAIR PROCEDURE • Are any other DTC present?	Yes	Go to the applicable DTC inspection. (See DTC Table.)
4		No	DTC troubleshooting completed.