Charging System How To Proceed With Troubleshooting
VEHICLE BROUGHT TO WORKSHOP
CUSTOMER PROBLEM ANALYSIS CHECK
INSPECT BATTERY VOLTAGE
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*
CHECK DTC AND FREEZE FRAME DATA*
CLEAR DTC AND FREEZE FRAME DATA*
PROBLEM SYMPTOMS TABLE
OVERALL ANALYSIS AND TROUBLESHOOTING*
CHECK ECM CIRCUIT
CHECK FOR INTERMITTENT PROBLEMS
CONDUCT PARTS INSPECTION
IDENTIFY PROBLEM
ADJUST AND/OR REPAIR
CONDUCT CONFIRMATION TEST
Charging System -- How To Proceed With Troubleshooting |
- HINT:
- *: Use the GTS.
1.VEHICLE BROUGHT TO WORKSHOP |
2.CUSTOMER PROBLEM ANALYSIS CHECK |
- HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
- The following 5 items are important points in the problem analysis:
What
| Vehicle model, system name
|
When
| Date, time, occurrence frequency
|
Where
| Road conditions
|
Under what conditions?
| Running conditions, driving conditions, weather conditions
|
How did it happen?
| Problem symptoms
|
3.INSPECT BATTERY VOLTAGE |
Measure the battery voltage.
- Standard voltage:
- 11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
4.INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
Use the GTS to check if the CAN communication system is functioning normally.
- for LHD with Central Gateway ECU (Click here).
- for RHD with Central Gateway ECU (Click here).
- for LHD without Central Gateway ECU (Click here).
- for RHD without Central Gateway ECU (Click here).
- Result:
Result
| Proceed to
|
CAN communication system DTC is not output
| A
|
CAN communication system DTC is output (for LHD with Central Gateway ECU)
| B
|
CAN communication system DTC is output (for RHD with Central Gateway ECU)
| C
|
CAN communication system DTC is output (for LHD without Central Gateway ECU)
| D
|
CAN communication system DTC is output (for RHD without Central Gateway ECU)
| E
|
5.CHECK DTC AND FREEZE FRAME DATA* |
Check for DTCs (Click here).
Check for freeze frame data (Click here).
- HINT:
- Record or print DTCs and freeze frame data if necessary.
6.CLEAR DTC AND FREEZE FRAME DATA* |
Clear the DTCs and freeze frame data (Click here).
- Result:
Result
| Proceed to
|
Malfunctioning parts are not confirmed
| A
|
Malfunctioning parts are confirmed
| B
|
8.OVERALL ANALYSIS AND TROUBLESHOOTING* |
Data List / Active Test (Click here).
- Result:
Result
| Proceed to
|
Malfunctioning parts are not confirmed
| A
|
Malfunctioning parts are confirmed
| B
|
- HINT:
- Refer to Terminals of ECM (Click here).
- Result:
10.CHECK FOR INTERMITTENT PROBLEMS |
- HINT:
- Refer to Symptom Simulation (Click here).
11.CONDUCT PARTS INSPECTION |
14.CONDUCT CONFIRMATION TEST |