Diagnostic Procedure

STEP	INSPECTION		ACTION
1	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	VERIFY PCM DTC Perform the PCM DTC inspection using the M-MDS. (Refer to ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Are any DTCs present?	Yes	DTC U0074:00 is displayed: CAN communication line can be considered the cause. Refer to the wiring diagram and verify whether or not there is a common connector between TCM and PCM. If there is a common connector: Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a malfunction. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness. Go to the next step. DTC other than U0074:00 is displayed: Go to the applicable DTC inspection. (Refer to DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
2		No	Go to the next step.
3	VERIFY DTC TROUBLESHOOTING COMPLETED Clear the DTC using the M-MDS. (Refer to ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL] .) Perform the following procedure to ensure that the DTC has been resolved: Switch the ignition ON (engine off or on) Perform the DTC inspection using the M-MDS. (Refer to ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL] .) Is the same DTC present?	Yes	Replace the control valve body, then go to the next step. (Refer to CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL] .)
3		No	Go to the next step.
4	VERIFY NO DTC IS PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. (Refer to ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL] .)
4	VERIFY NO DTC IS PRESENT Are any DTCs present?	No	DTC troubleshooting completed.