How To Proceed With Troubleshooting

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

HOW TO PROCEED WITH TROUBLESHOOTING
HINT: *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
HINT: If the voltage is below 11 V, recharge or replace the 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 11
A -- Continue to next step.
9. SYMPTOM SIMULATION
NEXT -- Continue to next step.
10. CHECK FOR DTC (OTHER THAN CAN AND MULTIPLEX COMMUNICATION SYSTEM DTC)*

Result





B -- GO TO STEP 13
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