B4000 Regular Cab 4WD V6-4.0L OHV (1997)
Brake Light Switch: Testing and Inspection
Check Stop Light Switch Harness at RABS Control Unit
1. Turn the ignition switch OFF.
2. Disconnect the RABS control unit connector.
3. Depress the brake pedal.
4. Check for voltage between terminal 11 at the vehicle side harness and ground.
5. If not as specified, check wiring harness between the stoplight switch and the RABS control unit.