Pinpoint Test B: DTC B1483 - Brake Pedal Input Circuit Failure

NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

B1 CHECK THE STOPLAMPS FOR CORRECT OPERATION
- Check the stoplamps for correct operation by pressing and releasing the brake pedal and observing the stoplamps.
- Do the stoplamps operate correctly?
1. YES : Go to B2.
2. NO : REFER to EXTERIOR LIGHTING article for further diagnosis of the stoplamps.
B2 CHECK THE SPEED CONTROL SYSTEM FOR CORRECT OPERATION
- Drive the vehicle and verify that the speed control is deactivated when the brake pedal is pressed.
- Does the speed control deactivate when the brake pedal is pressed?
1. YES : Go to B3.
2. NO : REFER to SPEED CONTROL article for further diagnosis of the speed control system.
B3 CHECK THE ABS MODULE BRAKE ON/OFF (BOO_ABS) PID
- Connect the diagnostic tool.
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: DataLogger ABS Module
- Monitor the BOO_ABS PID while pressing and releasing the brake pedal.
- Does the PID display match the brake pedal position?
1. YES : The concern is not present at this time. CLEAR the DTCs. REPEAT the self-test.
2. NO : REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus.