Diagnostic Procedure

DIAGNOSTIC PROCEDURE DESCRIPTION

STEP	INSPECTION	RESULTS	ACTION
1	RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION NOTE: Recording can be facilitated using the screen capture function of the PC. Record the FREEZE FRAME DATA/snapshot data on the repair order.	-	Go to the next step.
2	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.
2		No	Go to the next step.
3	DETERMINE IF TP SENSOR NO. 1 OR WIRING HARNESS MALFUNCTION Access the TP1 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .) Verify the TP1 PID value. Is the TP1 PID value 5 V or B+?	Yes	Go to Step 7.
3		No	Go to the next step.
4	INSPECT THROTTLE BODY CONNECTOR CONDITION Switch the ignition off. Disconnect the throttle body connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 10.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR CONDITION Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 10.
5		No	Go to the next step.
6	INSPECT TP SENSOR NO. 1 Reconnect all disconnected connectors. Inspect the TP sensor No. 1. (See THROTTLE POSITION (TP) SENSOR INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Is there any malfunction?	Yes	Replace the throttle body, then go to Step 10. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
6		No	Go to Step 10.
7	DETERMINE IF TP SENSOR NO. 1 SIGNAL CIRCUIT OR TP SENSOR NO. 1 GROUND CIRCUIT MALFUNCTION Switch the ignition off. Disconnect the throttle body connector. Access the TP1 PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .) Verify the TP1 PID value. Is the TP1 PID value 5 V or B+?	Yes	Go to the next step.
7		No	Go to Step 9.
8	INSPECT TP SENSOR NO. 1 SIGNAL CIRCUIT FOR OPEN CIRCUIT Verify that the throttle body connector is disconnected. Switch the ignition off. Disconnect the PCM connector. Inspect for continuity between throttle body terminal A (wiring harness-side) and PCM terminal 1BP (wiring harness-side). Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between throttle body terminal A and PCM terminal 1BP. 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 short to power supply. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has a short to power supply. Go to Step 10.
8		No	Refer to the wiring diagram and verify whether or not there is a common connector between throttle body terminal A and PCM terminal 1BP. 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 an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to Step 10.
9	INSPECT TP SENSOR NO. 1 CIRCUIT FOR OPEN CIRCUIT Verify that the throttle body connector is disconnected. Switch the ignition off. Disconnect the PCM connector. Inspect for continuity between the following terminals (wiring harness-side): Throttle body terminal B-PCM terminal 1BS Throttle body terminal D-PCM terminal 1BQ Is there continuity?	Yes	Replace the throttle body, then go to the next step. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
9		No	Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: Throttle body terminal B-PCM terminal 1BS Throttle body terminal D-PCM terminal 1BQ 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 an open circuit. Repair or replace the malfunctioning part. If there is no common connector: Repair or replace the wiring harness which has an open circuit. Go to the next step.
10	VERIFY DTC TROUBLESHOOTING COMPLETED Always reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See CLEARING DTC [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .) Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .) Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Go to the next step.
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
11		No	DTC troubleshooting completed.