How To Proceed With Troubleshooting

HYBRID BATTERY CONTROL: HYBRID BATTERY SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
The Techstream should be used in steps 3, 4, 5, and 10.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

NEXT -- Continue to next step.

3. CONNECT TECHSTREAM TO THE DLC3*

HINT
If the display on the tester indicates a communication fault, inspect the DLC3.

NEXT -- Continue to next step.

4. CHECK DTC AND FREEZE FRAME DATA* Hybrid Battery System, Freeze Frame Data

HINT
Record or print DTCs and freeze frame data if necessary.

NEXT -- Continue to next step.

5. CLEAR DTC AND FREEZE FRAME DATA* Hybrid Battery System

NEXT -- Continue to next step.

6. CONDUCT VISUAL INSPECTION

NEXT -- Continue to next step.

7. CONFIRM PROBLEM SYMPTOMS

HINT
If the engine does not start, perform steps 9 and 11 first.

Result:





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

8. DUPLICATE CONDITIONS THAT PRODUCE SYMPTOMS

NEXT -- Continue to next step.

9. CHECK FOR DTCS* Hybrid Battery System

Result:





B -- GO TO STEP 11
A -- Continue to next step.

10. REFER TO DTC CHART Hybrid Battery System

NEXT -- GO TO STEP 13

11. CONDUCT BASIC INSPECTION

Result:





B -- GO TO STEP 15
A -- Continue to next step.

12. CHECK ECU POWER SOURCE CIRCUIT

NEXT -- Continue to next step.

13. CONDUCT CIRCUIT INSPECTION

Result:





B -- GO TO STEP 16
A -- Continue to next step.

14. CHECK FOR INTERMITTENT PROBLEMS Hybrid Battery System

NEXT -- GO TO STEP 16

15. CONDUCT PARTS INSPECTION

NEXT -- Continue to next step.

16. IDENTIFY PROBLEM

NEXT -- Continue to next step.

17. ADJUST AND/OR REPAIR

NEXT -- Continue to next step.

18. CONDUCT CONFIRMATION TEST

NEXT -- END