How To Proceed With Troubleshooting
The hand-held tester can be used at steps 4, 4, 6, 7, and 12.
- VEHICLE BROUGHT TO WORK SHOP
Go to Next Step.
- (SEE CUSTOMER PROBLEM ANALYSIS CHECK
)
Go to Next Step.
- PROBLEM SYMPTOM CONFIRMATION
Go to Next Step.
- CHECK BODY MULTIPLEX COMMUNICATION SYSTEM (SEE HOW TO PROCEED WITH TROUBLESHOOTING
)
- Check if any DTCs are output.
HINT:
The ECM and cruise control ECU (distance control ECU) of this system are connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.
MULTIPLEX SYSTEM DTC IS OUTPUT (PROCEED TO " MULTIPLEX COMMUNICATION SYSTEM ")
NO MULTIPLEX SYSTEM DTC (GO TO STEP 5)
- CHECK CAN COMMUNICATION SYSTEM (SEE HOW TO PROCEED WITH TROUBLESHOOTING
)
- Check if any DTCs are output.
HINT:
The ECM and cruise control ECU (distance control ECU) of this system are connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.
CAN SYSTEM DTC IS OUTPUT (PROCEED TO " CAN COMMUNICATION SYSTEM ")
NO CAN SYSTEM DTC (GO TO STEP 6)
- (SEE DTC CHECK/CLEAR
)
Go to Next Step.
- DTC CHECK (OTHER THAN MULTIPLEX AND CAN SYSTEM DTC) (SEE DTC CHECK/CLEAR
)
TROUBLE CODE (GO TO STEP 8)
NORMAL SYSTEM CODE (GO TO STEP 9 )
- (SEE DIAGNOSTIC TROUBLE CODE CHART
)
GO TO STEP 12
- PROBLEM SYMPTOM SIMULATION
SYMPTOM DOES NOT OCCUR (GO TO STEP 10)
SYMPTOM OCCURS (GO TO STEP 11 )
- SYMPTOM SIMULATION (SEE ELECTRONIC CIRCUIT INSPECTION PROCEDURE
)
Go to Next Step.
- (SEE PROBLEM SYMPTOMS TABLE
)
Go to Next Step.
- CIRCUIT INSPECTION (SEE DTC P0500 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION, DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION
- DIAGNOSIS CIRCUIT
)
Go to Next Step.
- (SEE TERMINALS OF ECU
)
Go to Next Step.
- PROBLEM IDENTIFICATION
Go to Next Step.
- REPAIR OR REPLACE
Go to Next Step.
- CONFIRMATION TEST
END