How To Proceed With Troubleshooting

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer and confirm the problem How To Proceed With Troubleshooting.

NEXT -- Continue to next step.

3. CHECK DTC AND FREEZE FRAME DATA*

(a) Check and record DTCs and Freeze Frame Data.

(b) Clear the DTCs and Freeze Frame Data Reading and Clearing Diagnostic Trouble Codes for DTC Check/Clear, and Freeze Frame Data for Freeze Frame Data).

(c) Reconfirm the DTCs.

(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data Reading and Clearing Diagnostic Trouble Codes for DTC Check/Clear, and Freeze Frame Data for Freeze Frame Data).

HINT
* When DTCs indicating CAN communication system malfunctions are output, repair the CAN communication system before repairing each corresponding sensor How to Proceed With Troubleshooting.
* If any of DTCs U0123/62, U0124/95, U0126/63, and U0293/59 is output together with a CAN communication DTC, first check the appropriate sensor for a momentary open circuit Check For Intermittent Problems.
* If the Techstream cannot communicate with the skid control ECU, inspect the CAN communication system How to Proceed With Troubleshooting.
* If there is no response from the skid control ECU, inspect the IG1 circuit of the skid control ECU C1241.

Result:





B -- Go to step 5

C -- Go to step 6
A -- Continue to next step.

4. DIAGNOSTIC TROUBLE CODE CHART

(a) Proceed to Diagnostic Trouble Code Chart Electronically Controlled Brake System.

NEXT -- Go to step 7

5. SYMPTOM SIMULATION

(a) Proceed to How to Proceed with Troubleshooting How To Proceed With Troubleshooting.

NEXT -- Continue to next step.

6. PROBLEM SYMPTOMS TABLE

(a) Proceed to Problem Symptoms Table Problem Symptoms Table.

NEXT -- Continue to next step.

7. CIRCUIT INSPECTION*

NEXT -- Continue to next step.

8. IDENTIFICATION OF PROBLEM

NEXT -- Continue to next step.

9. REPAIR OR REPLACEMENT

NEXT -- Continue to next step.

10. CONFIRMATION TEST*

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