How To Proceed With Troubleshooting

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT AUXILIARY BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding.

NEXT -- Continue to next step.

3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system.

Result





HINT
The skid control ECU sends the signals of each warning light to CAN communication.

B -- PROCEED TO CAN COMMUNICATION SYSTEM
A -- Continue to next step.

4. CHECK DTC AND FREEZE FRAME DATA*

NEXT -- Continue to next step.

5. CLEAR DTC AND FREEZE FRAME DATA*

NEXT -- Continue to next step.

6. PROBLEM SYMPTOM CONFIRMATION

NEXT -- Continue to next step.

7. DTC CHECK AND CLEAR*

NEXT -- Continue to next step.

8. PROBLEM SYMPTOM CONFIRMATION

Result





B -- GO TO STEP 10
A -- Continue to next step.

9. SYMPTOM SIMULATION

NEXT -- Continue to next step.

10. CHECK FOR DTC (OTHER THAN CAN COMMUNICATION SYSTEM DTC)*

Result





B -- GO TO STEP 12
A -- Continue to next step.

11. PROBLEM SYMPTOMS TABLE

NEXT -- GO TO STEP 14

12. DTC CHART

NEXT -- Continue to next step.

13. CIRCUIT INSPECTION*

NEXT -- Continue to next step.

14. IDENTIFICATION OF PROBLEM

NEXT -- Continue to next step.

15. REPAIR OR REPLACE

NEXT -- Continue to next step.

16. CONFIRMATION TEST*

NEXT -- END