Test E: DTC C1446 - Brake Switch Circuit Failure
Test E: DTC C1446 - Brake Switch Circuit FailureRefer to Vehicle/Diagrams, Vehicle Dynamic Systems for schematic and connector information.
Normal Operation
The anti-lock brake system (ABS) module receives a voltage signal from the smart junction box (SJB) along circuit 535 (LB/RD) through the brake pedal switch. When the brake pedal is applied the voltage signal is no longer referenced by the ABS module. The SJB provides 5 volts to the brake fluid level switch along circuit 547 (LG/YE). When the brake fluid reaches a certain level, the switch closes and the 5 volts are sent back to the SJB along circuit 512 (TN/LG).
Possible Causes
- Circuit shorted
- Brake pedal switch
- Brake fluid level sensor (master cylinder)
- Anti-lock brake system (ABS) module
E1:
E2-E5:
