C1513

DTC C1513 BRAKE LIGHT SWITCH MAL.

COMPONENT LOCATION:

GENERAL DESCRIPTION
The brake light switch indicates brake pedal status to the ABS control unit. The switch is turned on when brake is depressed. The brake light switch is a normally-open contact which runs to battery voltage when active (brake depressed). When passive (brake not depressed), the cable is grounded via the break light bulbs.

DTC DESCRIPTION
The brake light signal is a reference to judge driver's will for braking. ABS ECU monitor open circuit of brake light switch for normal ABS control.

DTC DETECTING CONDITION

DTC DETECTING CONDITION:

TERMINAL & CONNECTOR INSPECTION
Refer to DTC C1101. C1101

SIGNAL CIRCUIT INSPECTION
1. Ignition ON & Engine "OFF".
2. Press the brake pedal.





3. Measure voltage between the terminal 30 of the HECU harness connector and chassis ground.
Specification: Brake Light Switch - Approximately B+
Is the measured voltage within specifications?
YES
- Fault is intermittent caused by open harness in brake lamp switch and brake switch line, faulty brake lamp switch was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.
NO
- Check for damaged harness and poor connection in the power harness between the battery terminal(+) and the terminal 30 of the HECU harness connector. Check for open or blown 15A STOP fuse. Repair as necessary and then go to Verification of vehicle Repair procedure.

COMPONENT INSPECTION
1. Connect an Ohmmeter to the connector of brake light switch, and check whether or not there is continuity when the plunger of the brake light switch is pushed in and when it is released.
The switch is in good condition if there is no continuity when the plunger is pushed.
2. Is there no continuity when the plunger is pushed?
YES
- Fault is intermittent caused by open harness in brake light switch line, faulty brake lamp switch or was repaired and HECU memory was not cleared. Go to the applicable troubleshooting procedure.
NO
- Substitute with a known-good brake lamp switch and check for proper operation. If problem is corrected, replace brake lamp switch and then go to Verification of Vehicle Repair procedure.

VERIFICATION OF VEHICLE REPAIR
Refer to DTC C1101. C1101