How To Proceed With Troubleshooting

HYBRID BATTERY CONTROL: HYBRID BATTERY 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. CUSTOMER PROBLEM ANALYSIS
NEXT -- Continue to next step.
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: Make sure to save freeze frame data because the data is necessary for a simulation test.

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