How To Proceed With Troubleshooting

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

Techstream can be used at steps 3, 4, 6, 7, 11, 14, and 17.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

NEXT -- Continue to next step.

3. CHECK DTC AND FREEZE FRAME DATA

NEXT -- Continue to next step.

4. CLEAR DTC AND FREEZE FRAME DATA

NEXT -- Continue to next step.

5. PROBLEM SYMPTOM CONFIRMATION

NEXT -- Continue to next step.

6. CHECK CAN COMMUNICATION SYSTEM

(a) Check for output DTCs.

HINT
The ECU of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

-- CAN COMMUNICATION SYSTEM DTC IS OUTPUT: PROCEED TO CAN COMMUNICATION SYSTEM

-- NO CAN COMMUNICATION SYSTEM DTC IS OUTPUT: GO TO STEP 7

7. CHECK MULTIPLEX COMMUNICATION SYSTEM

(a) Check for output DTCs.

HINT
The skid control ECU sends the signals of each warning light to the gateway ECU via CAN communication, and the gateway ECU sends the signals to the combination meter via multiplex communication system (BEAN).

-- MULTIPLEX COMMUNICATION SYSTEM DTC IS OUTPUT: PROCEED TO MULTIPLEX COMMUNICATION SYSTEM

-- NO MULTIPLEX COMMUNICATION SYSTEM DTC IS OUTPUT: GO TO STEP 8

8. DTC CHECK AND CLEAR

NEXT -- Continue to next step.

9. PROBLEM SYMPTOM SIMULATION

-- SYMPTOM DOES NOT OCCUR: GO TO STEP 10

-- SYMPTOM OCCURS: GO TO STEP 11

10. SYMPTOM SIMULATION

NEXT -- Continue to next step.

11. DTC CHECK (OTHER THAN CAN AND MULTIPLEX COMMUNICATION SYSTEM DTC)

-- NORMAL SYSTEM CODE: GO TO STEP 12

-- TROUBLE CODE: GO TO STEP 13

12. PROBLEM SYMPTOMS TABLE

NEXT -- GO TO STEP 14

13. DTC CHART

NEXT -- Continue to next step.

14. CIRCUIT INSPECTION

NEXT -- Continue to next step.

15. IDENTIFICATION OF PROBLEM

NEXT -- Continue to next step.

16. REPAIR OR REPLACE

NEXT -- Continue to next step.

17. CONFIRMATION TEST

NEXT -- END