How To Proceed With Troubleshooting

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

HINT
*: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS

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3. CONNECT TECHSTREAM TO DLC3*

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

NEXT -- Continue to next step.

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

HINT
If any CAN communication system DTCs are output, perform troubleshooting for the CAN communication system first How to Proceed With Troubleshooting.

NEXT -- Continue to next step.

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

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6. CONDUCT VISUAL INSPECTION

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7. CONFIRM PROBLEM SYMPTOMS

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





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





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





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





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