How To Troubleshoot

Interview and phenomenon check

NOTE: Refer to CHECK LIST FOR INTERVIEW .

RESULT DESCRIPTION

Result	Go to
Phenomenon can be confirmed	A
Phenomenon can not be confirmed	B

A: Go to next step

B: To fault simulation (Refer to MALFUNCTION SYMPTOMS AND DTC CHECK )

Communication function inspection of large-scale multiplex communication system for vehicle body [LIN]

NOTE: Refer to CHECKING/CLEARING DIAGNOSTIC CODES .

RESULT DESCRIPTION

Result	Go to
Code is not output	A
Code is output	B

A: Go to next step

B: Go to "Large-scale multiplex communication system for vehicle body [LIN]" (Refer to HOW TO TROUBLESHOOT )

Inspection of CAN communication system

NOTE: Refer to HOW TO TROUBLESHOOT .

Using SSM4, perform a function check of the CAN communication system to check that no abnormal condition is present in the communication system.

RESULT DESCRIPTION

Result	Go to
Functioning properly	A
Not functioning properly	B

A: Go to next step

B: Go to control system CAN communication system (Refer to HOW TO TROUBLESHOOT )

Symptom table

NOTE: Refer to LIST OF DIAGNOSTIC CODES .

RESULT DESCRIPTION

Result	Go to
Not applicable to the symptom table.	A
Applicable to the symptom table.	B

A: Go to next step

B: Go to Step 7.

Perform troubleshooting with the method below based on malfunctions.
1. Function inspection (Refer to METER & GAUGE SYSTEM )
2. ECM terminal arrangement (Refer to ECM TERMINAL ARRANGEMENT )
3. Data monitor/active test (Refer to DATA MONITOR/ACTIVE TEST )
4. Unit inspection
Adjustment, repair, or replacement
Confirmation test
Complete