ABS Trouble Code Charts For Select Monitor Results

TROUBLE CODE 54:








1. B.SW HARD
Break and short circuit at stroke sensor wiring.

DIAGNOSIS:
^ Faulty stroke sensor.
^ Faulty harness/connector.

TROUBLE SYMPTOM:
^ ABS and Traction Control System (TCS) do not operate.

NOTE: Operate the function F09 in scan tool TCS mode, and read the sensor output step.
If system is normal, the output reading is 1 when brake pedal is not depressed, and it changes from 2 to 3, 4 and 5 in accordance with the brake pedal depressing. If so, skip check steps 1 through 5.








2. B.SW SOFT (G)
Irregular value in stroke sensor acceleration comparison.

DIAGNOSIS:
^ Faulty stroke sensor.
^ Faulty harness/connector.

TROUBLE SYMPTOM:
^ ABS and Traction Control System (TCS) do not operate.

NOTE: Operate the function F09 in scan tool TCS mode, and read the sensor output step.
If system is normal, the output reading is 1 when brake pedal is not depressed, and it changes from 2 to 3, 4 and 5 in accordance with the brake pedal depressing. If so, skip check steps 2 through 4.








3. B.SW SOFT (B)
Irregular value in stroke sensor and brake light switch comparison.

DIAGNOSIS:
^ Faulty stroke sensor.
^ Faulty stop light switch.
^ Faulty harness/connector.

TROUBLE SYMPTOM:
^ ABS and Traction Control System (TCS) do not operate.

NOTE: Operate the function F09 in scan tool TCS mode, and read the sensor output step.
If system is normal, the output reading is 1 when brake pedal is not depressed, and it changes from 2 to 3, 4 and 5 in accordance with the brake pedal depressing. If so, skip check steps 1 and 2 through 8.
Then, operate the function FA0 and check the stop and brake switches by B1 LED ON/OFF. If system is normal, LED comes on when depressing brake pedal, and goes off when not depressing If so. skip check steps 3 through 7.








4. B.SW SOFT (P)
Comparison between stroke sensor and pump output.

DIAGNOSIS:
^ Faulty stroke sensor.
^ Faulty harness/connector.
^ Faulty pump unit in hydraulic unit.

NOTE: Operate the function F09 in scan tool Traction Control System (TCS) mode, and read the sensor output step.
If system is normal, the output reading is 1 when brake pedal is not depressed, and it changes from 2 to 3, 4 and 5 in accordance with the brake pedal depressing. If so, skip check steps 2 through 4.








5. B.SW SOFT (O)
Broken brake light switch.

DIAGNOSIS:
^ Faulty stop light switch.
^ Faulty harness/connector.

TROUBLE SYMPTOM:
^ Traction Control System (TCS) does not operate.

NOTE: Operate the function FAO in scan tool TCS mode, and check the stop and brake switches by B1 LED ON/OFF. If system is normal, LED comes on when depressing brake pedal, and goes off when not depressing. If so, skip check steps 2 through 4.