How To Proceed With Troubleshooting

GENERAL PROCEDURES [ENGINE STOP AND START ECU]
- If there is any vehicle malfunction complaint lodged by a customer, perform malfunction diagnosis according to the troubleshooting procedure.
Troubleshooting Procedure

Fig 1: Troubleshooting Procedure Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1: Refer to CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW

Action for non-repeatable malfunction
- If the malfunction does not recur, verify the malfunction cause by performing the following actions:
  - Based on the repair order form, attempt to drive the vehicle or perform tests to replicate the malfunction, record the data at that time, and detect the malfunction cause.
  - Shake the wiring harness or connector of the electrical component which is suspected to be the cause of the malfunction, and inspect for malfunction or occurrence of any DTCs.
    
    Fig 2: Wiring Harness Or Connector Shake Test
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - Inspect the female terminals on the connector of the electric component which is suspected to be the cause of the malfunction for poor connection.
    
    Fig 3: Inspecting Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002