NO.5 i-stop FUNCTION OPERATES UNDER NO ENGINE-STOP CONDITIONS [SKYACTIV-G 2.0, SKYACTIV-G 2.5]

5	i-stop FUNCTION OPERATES UNDER NO ENGINE-STOP CONDITIONS
DESCRIPTION	• i-stop function operates even though system is turned off by pressing i-stop OFF switch. • i-stop function operates even though vehicle conditions are for non-operation. • i-stop function operates frequently while parking vehicle.
POSSIBLE CAUSE	i-stop warning light (amber) false illumination • i-stop warning light (amber) illumination circuit malfunction in instrument cluster • CAN communication line between instrument cluster and PCM malfunction False detection of i-stop function operation conditions • False detection of external vehicle temperature within operable range (−10 to 50 °C {14 to 122 °F}) ― Ambient temperature sensor malfunction (sensor specific malfunction) ― Short or open circuit in wiring harness between ambient temperature sensor terminal A and PCM terminal 2I ― Open circuit in wiring harness between ambient temperature sensor terminal B and PCM terminal 2AJ • Climate control unit falsely detects that internal vehicle temperature is within operation range. (with full-auto air conditioner) ― Cabin temperature sensor malfunction (sensor specific or motor malfunction) ― Short or open circuit in wiring harness between cabin temperature sensor terminal A and climate control unit terminal 1H ― Open circuit in wiring harness between cabin temperature sensor terminal B and climate control unit terminal 1J • Falsely detects that climate control unit detects that driver-side air mix door is not in MAX HOT or MAX COLD position even though driver-side air mix door is in MAX HOT or MAX COLD position (with full-auto air conditioner) ― Driver-side air mix actuator malfunction ― Driver-side air mix actuator position sensor malfunction ― Driver-side air mix door or linkage stuck • False detection of vehicle not being parked ― False detection of steering wheel rotation speed • Steering angle sensor initialization malfunction • Steering angle sensor malfunction • Short or open circuit in wiring harness between steering angle sensor and start stop unit terminals 1U, 1T, 1W or 1S • Falsely detects that vehicle is under safety condition ― False detection of closed bonnet • Bonnet latch switch malfunction (stuck closed) • Short to ground in wiring harness between bonnet latch switch terminal A and rear body control module (RBCM) terminal 3L ― False detection of closed door, trunk (4SD)/liftgate (WGN) • Door latch switch malfunction • Trunk lid latch switch (4SD) • Liftgate latch switch malfunction (WGN) • Short to ground in wiring harness between door latch switch and rear body control module (RBCM) • Open circuit in wiring harness between trunk lid latch switch and rear body control module (RBCM) (4SD) • Open circuit in wiring harness between liftgate latch switch and rear body control module (RBCM) (WGN) ― False detection of fastened driver seat belt • Driver-side buckle switch malfunction • Open circuit in wiring harness between driver-side buckle switch terminal 4A and SAS control module terminal 2U ― False detection of inclination angle (false detection of 12 % or less) • Low-G (XY) sensor (built-into SAS control module) malfunction (In this case, the SAS control module records DTCs C0061:29 and C0062:29.) • Low-G (XY) sensor (built-into SAS control module) initialization malfunction ― False detection of low power brake unit load • Power brake unit vacuum sensor malfunction • Short or open circuit in wiring harness between power brake unit vacuum sensor terminal C and PCM terminal 2BG • Short or open circuit in wiring harness between power brake unit vacuum sensor terminal B and PCM terminal 2Q • Short or open circuit in wiring harness between power brake unit vacuum sensor terminal A and PCM terminal 2AH

i-stop FUNCTION OPERATES UNDER NO ENGINE-STOP CONDITIONS

DESCRIPTION

• i-stop function operates even though system is turned off by pressing i-stop OFF switch.

• i-stop function operates even though vehicle conditions are for non-operation.

• i-stop function operates frequently while parking vehicle.

POSSIBLE CAUSE

i-stop warning light (amber) false illumination

• i-stop warning light (amber) illumination circuit malfunction in instrument cluster

• CAN communication line between instrument cluster and PCM malfunction

False detection of i-stop function operation conditions

• False detection of external vehicle temperature within operable range (−10 to 50 °C {14 to 122 °F})

― Ambient temperature sensor malfunction (sensor specific malfunction)

― Short or open circuit in wiring harness between ambient temperature sensor terminal A and PCM terminal 2I

― Open circuit in wiring harness between ambient temperature sensor terminal B and PCM terminal 2AJ

• Climate control unit falsely detects that internal vehicle temperature is within operation range. (with full-auto air conditioner)

― Cabin temperature sensor malfunction (sensor specific or motor malfunction)

― Short or open circuit in wiring harness between cabin temperature sensor terminal A and climate control unit terminal 1H

― Open circuit in wiring harness between cabin temperature sensor terminal B and climate control unit terminal 1J

• Falsely detects that climate control unit detects that driver-side air mix door is not in MAX HOT or MAX COLD position even though driver-side air mix door is in MAX HOT or MAX COLD position (with full-auto air conditioner)

― Driver-side air mix actuator malfunction

― Driver-side air mix actuator position sensor malfunction

― Driver-side air mix door or linkage stuck

• False detection of vehicle not being parked

― False detection of steering wheel rotation speed

• Steering angle sensor initialization malfunction

• Steering angle sensor malfunction

• Short or open circuit in wiring harness between steering angle sensor and start stop unit terminals 1U, 1T, 1W or 1S

• Falsely detects that vehicle is under safety condition

― False detection of closed bonnet

• Bonnet latch switch malfunction (stuck closed)

• Short to ground in wiring harness between bonnet latch switch terminal A and rear body control module (RBCM) terminal 3L

― False detection of closed door, trunk (4SD)/liftgate (WGN)

• Door latch switch malfunction

• Trunk lid latch switch (4SD)

• Liftgate latch switch malfunction (WGN)

• Short to ground in wiring harness between door latch switch and rear body control module (RBCM)

• Open circuit in wiring harness between trunk lid latch switch and rear body control module (RBCM) (4SD)

• Open circuit in wiring harness between liftgate latch switch and rear body control module (RBCM) (WGN)

― False detection of fastened driver seat belt

• Driver-side buckle switch malfunction

• Open circuit in wiring harness between driver-side buckle switch terminal 4A and SAS control module terminal 2U

― False detection of inclination angle (false detection of 12 % or less)

• Low-G (XY) sensor (built-into SAS control module) malfunction (In this case, the SAS control module records DTCs C0061:29 and C0062:29.)

• Low-G (XY) sensor (built-into SAS control module) initialization malfunction

― False detection of low power brake unit load

• Power brake unit vacuum sensor malfunction

• Short or open circuit in wiring harness between power brake unit vacuum sensor terminal C and PCM terminal 2BG

• Short or open circuit in wiring harness between power brake unit vacuum sensor terminal B and PCM terminal 2Q

• Short or open circuit in wiring harness between power brake unit vacuum sensor terminal A and PCM terminal 2AH

STEP	INSPECTION	RESULTS	ACTION
1	VERIFY DTC • Retrieve the PCM, TCM, front body control module (FBCM), rear body control module (RBCM), DSC HU/CM, SAS control module, instrument cluster and climate control unit DTCs using the M-MDS. (See \nON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See \nON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].) (See \nDTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].) (See \nDTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].) (See \nON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) (See \nDTC INSPECTION.) (See \nDTC INSPECTION [INSTRUMENT CLUSTER].) (See \nDTC DISPLAY [FULL-AUTO AIR CONDITIONER].) (See \nDTC DISPLAY [MANUAL AIR CONDITIONER].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See \nDTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See \nON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].) (See \nDTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].) (See \nDTC TABLE [REAR BODY CONTROL MODULE (RBCM)].) (See \nON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) (See \nDTC TABLE.) (See \nDTC TABLE [INSTRUMENT CLUSTER].) (See \nDTC TABLE [FULL-AUTO AIR CONDITIONER].) (See \nDTC TABLE [MANUAL AIR CONDITIONER].)
No	Go to the next step.
2*	DETERMINE IF MALFUNCTION CAUSE IS AMBIENT TEMPERATURE SENSOR SIGNAL OR OTHER • Switch the ignition ON (engine off or on). • Compare the ambient temperature sensor on the LCD with the actual ambient temperature. • Does the ambient temperature on the LCD correspond to the actual ambient temperature?	Yes	Go to Step 4.
No	Go to the next step.
3	INSPECT AMBIENT TEMPERATURE SENSOR • Inspect the ambient temperature sensor. (See \nAMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is there any malfunction?	Yes	Replace the ambient temperature sensor. (See \nAMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No	Inspect the following: • Short or open circuit in wiring harness between ambient temperature sensor terminal A and PCM terminal 2I If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between ambient temperature sensor terminal A and PCM terminal 2I. 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 or open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short or open circuit. • Open circuit in wiring harness between ambient temperature sensor terminal B and PCM terminal 2AJ If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between ambient temperature sensor terminal B and PCM terminal 2AJ. 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.
4*	DETERMINE IF MALFUNCTION CAUSE IS DOOR LATCH SWITCH AND TRUNK LID LATCH SWITCH (4SD)/LIFTGATE LATCH SWITCH (WGN) SIGNAL OR OTHER • Switch the ignition ON (engine off or on). • Access the following rear body control module (RBCM) PIDs using the M-MDS: (See \nPID/DATA MONITOR INSPECTION [REAR BODY CONTROL MODULE (RBCM)].) ― TRUNK ― DOOR_D ― DOOR_ALL • Are the PID values congruent with the opening and closing of the doors and trunk (4SD)/liftgate (WGN)? (See \nPID/DATA MONITOR TABLE [REAR BODY CONTROL MODULE (RBCM)].)	Yes	Go to Step 6.
No	Go to the next step.
5	INSPECT DOOR LATCH SWITCH AND TRUNK LID LATCH SWITCH (4SD)/LIFTGATE LATCH SWITCH (WGN) • Inspect the PID-related switch in which the malfunction occurred in Step 4. (See \nTRUNK LID LATCH SWITCH INSPECTION.) (See \nLIFTGATE LATCH SWITCH INSPECTION.) (See \nFRONT DOOR LATCH SWITCH INSPECTION.) (See \nREAR DOOR LATCH SWITCH INSPECTION.) • Is there any malfunction?	Yes	Replace the applicable switch. (See \nTRUNK LID LATCH AND RELEASE ACTUATOR REMOVAL/INSTALLATION.) (See \nLIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.) (See \nFRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.) (See \nREAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)
No	Inspect the following in which the malfunction occurred in Step 4: • Short to ground in wiring harness between door latch switch and rear body control module (RBCM) If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between door latch switch and rear body control module (RBCM). 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 ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. • Open circuit in wiring harness between trunk lid latch switch (4SD)/liftgate latch switch (WGN) and rear body control module (RBCM) If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between trunk lid latch switch (4SD)/liftgate latch switch (WGN) and rear body control module (RBCM). 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.
6*	DETERMINE IF MALFUNCTION CAUSE IS DRIVER-SIDE BUCKLE SWITCH SIGNAL OR OTHER • Switch the ignition ON (engine off or on). • Access the SAS control module PID SEAT_B_D using the M-MDS. (See \nPID/DATA MONITOR INSPECTION.) • Is the SEAT_B_D PID value congruent with the seat belt condition? (See \nPID/DATA MONITOR TABLE.)	Yes	With manual air conditioner: • Go to Step 10. With full-auto air conditioner: • Go to Step 8.
No	Go to the next step.
7	INSPECT DRIVER-SIDE BUCKLE SWITCH • Inspect the driver-side buckle switch. (See \nBUCKLE SWITCH INSPECTION.) • Is there any malfunction?	Yes	Replace the driver-side buckle switch. (See \nFRONT BUCKLE REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between driver-side buckle switch terminal 4A and SAS control module terminal 2U for a possible open circuit.
8	DETERMINE IF MALFUNCTION CAUSE IS CABIN TEMPERATURE SENSOR SIGNAL OR OTHER • Access the climate control unit PID INC_TMP_SEN using the M-MDS. (See \nPID/DATA MONITOR DISPLAY [FULL-AUTO AIR CONDITIONER].) • Does the INC_TMP_SEN PID value indicate the actual cabin temperature of the vehicle?	Yes	Go to Step 10.
No	Go to the next step.
9	INSPECT CABIN TEMPERATURE SENSOR • Inspect the cabin temperature sensor. (See \nCABIN TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is there any malfunction?	Yes	Replace the cabin temperature sensor. (See \nCABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No	Inspect the wiring harness between the following terminals for a short or open circuit: • Cabin temperature sensor terminal A—Climate control unit terminal 1H • Cabin temperature sensor terminal B—Climate control unit terminal 1J If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Cabin temperature sensor terminal A—Climate control unit terminal 1H • Cabin temperature sensor terminal B—Climate control unit terminal 1J 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 or open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short or open circuit.
10*	DETERMINE IF MALFUNCTION CAUSE IS BONNET LATCH SWITCH SIGNAL OR OTHER • Switch the ignition ON (engine off or on). • Access the rear body control module (RBCM) PID HOOD_SW using the M-MDS. (See \nPID/DATA MONITOR INSPECTION [REAR BODY CONTROL MODULE (RBCM)].) • Is the HOOD_SW PID value normal? (See \nPID/DATA MONITOR TABLE [REAR BODY CONTROL MODULE (RBCM)].)	Yes	Go to Step 12.
No	Go to the next step.
11	INSPECT BONNET LATCH SWITCH • Inspect the bonnet latch switch. (See \nBONNET LATCH SWITCH INSPECTION.) • Is there any malfunction?	Yes	Replace the bonnet latch switch. (See \nBONNET LATCH AND RELEASE LEVER REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between bonnet latch switch terminal A and rear body control module (RBCM) terminal 3L for a possible short to ground.
12	DETERMINE IF MALFUNCTION IS CAUSED BY STEERING ANGLE (ESTIMATED ABSOLUTE ANGLE) SIGNAL ERROR • Start the engine and idle it. • Using the M-MDS, display EPS control module PID STR_ANG. (See .\nELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS) • Are the monitoring values normal?	Yes	Go to Step 14.
No	Go to the next step.
13	INSPECT EPS CONTROL MODULE FOR MALFUNCTION • Inspect the EPS control module. (See \nEPS CONTROL MODULE INSPECTION.) • Is the EPS control module normal?	Yes	Perform the following procedure: 1. Switch the ignition off, and after 2 min or more have elapsed, switch the ignition ON. 2. Start the engine and drive the vehicle 10 m or more in a straight line at a speed of 10 km/h or more. 3. Stop the vehicle with the wheels in the straight-ahead position. 4. Using the M-MDS, display EPS control module PID STR_ANG. • If the STR_ANG value is normal, go to Step 18.(Because the steering angle (estimated absolute angle) has returned to normal) • If the STR_ANG value is not normal, replace the EPS control module. Go to Step 18. (See \nSTEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
No	Replace the EPS control module. Go to Step 18. (See \nSTEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
14	DETERMINE IF MALFUNCTION CAUSE IS POWER BRAKE UNIT VACUUM SENSOR SIGNAL OR OTHER • Turn off the i-stop system with i-stop OFF switch. • Start the engine and run it is idling. • Switch the ignition to off. • Switch the ignition ON (engine off). • Access the PCM PID BBP using the M-MDS while the brake pedal has been depressed several times. (See \nON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Does the monitor value decrease every time the brake pedal is depressed?	Yes	With manual air conditioner: • Go to Step 18. With full-auto air conditioner: • Go to Step 16.
No	Go to the next step.
15	INSPECT POWER BRAKE UNIT VACUUM SENSOR • Inspect the power brake unit vacuum sensor. (See \nPOWER BRAKE UNIT VACUUM SENSOR INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • Is there any malfunction?	Yes	Replace the power brake unit vacuum sensor. (See \nPOWER BRAKE UNIT VACUUM SENSOR REMOVAL/INSTALLATION.)
No	Inspect the wiring harness between the following terminals for a short or open circuit: • Power brake unit vacuum sensor terminal C—PCM terminal 2BG • Power brake unit vacuum sensor terminal B—PCM terminal 2Q • Power brake unit vacuum sensor terminal A—PCM terminal 2AH If there is any malfunction: ― Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals: • Power brake unit vacuum sensor terminal C—PCM terminal 2BG • Power brake unit vacuum sensor terminal B—PCM terminal 2Q • Power brake unit vacuum sensor terminal A—PCM terminal 2AH 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 or open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short or open circuit. If there is no malfunction: ― Replace the PCM. (See \nPCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)
16	DETERMINE IF MALFUNCTION CAUSE IS DRIVER-SIDE AIR MIX ACTUATOR SIGNAL OR OTHER • Measure the voltage at the following terminal (wiring harness-side) when the driver-side temperature setting is MAX HOT and MAX COLD. ― Climate control unit terminal 2G (L.H.D.) ― Climate control unit terminal 2E (R.H.D.) • Is the voltage normal? (See \nCLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].)	Yes	Repeat the inspection from Step 1. • If the malfunction is not resolved, replace the PCM. (See \nPCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) Go to Step 18.
No	Go to the next step.
17	INSPECT DRIVER-SIDE AIR MIX ACTUATOR • Inspect the driver-side air mix actuator. (See \nAIR MIX ACTUATOR INSPECTION [FULL-AUTO AIR CONDITIONER].) • Is there any malfunction?	Yes	Replace the driver-side air mix actuator. (See \nAIR MIX ACTUATOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
No	Inspect the air mix actuator and linkage for sticking. (See \nA/C UNIT DISASSEMBLY/ASSEMBLY.) • If there is any malfunction: ― Repair or replace the malfunctioning part according to the inspection results.
18	Verify the test results. • If normal, return to the diagnostic index to service any additional symptoms. (See \nSYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) • If a malfunction remains, inspect the related Service Information and perform the repair or diagnosis. ― If the vehicle is repaired, troubleshooting is completed. ― If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM. (See \nPCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

STEP

INSPECTION

RESULTS

ACTION

VERIFY DTC

• Retrieve the PCM, TCM, front body control module (FBCM), rear body control module (RBCM), DSC HU/CM, SAS control module, instrument cluster and climate control unit DTCs using the M-MDS.

(See \nON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See \nON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [FW6A-EL].)

(See \nDTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].)

(See \nDTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

(See \nON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

(See \nDTC INSPECTION.)

(See \nDTC INSPECTION [INSTRUMENT CLUSTER].)

(See \nDTC DISPLAY [FULL-AUTO AIR CONDITIONER].)

(See \nDTC DISPLAY [MANUAL AIR CONDITIONER].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See \nDTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See \nON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [FW6A-EL].)

(See \nDTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)

(See \nDTC TABLE [REAR BODY CONTROL MODULE (RBCM)].)

(See \nON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

(See \nDTC TABLE.)

(See \nDTC TABLE [INSTRUMENT CLUSTER].)

(See \nDTC TABLE [FULL-AUTO AIR CONDITIONER].)

(See \nDTC TABLE [MANUAL AIR CONDITIONER].)

Go to the next step.

DETERMINE IF MALFUNCTION CAUSE IS AMBIENT TEMPERATURE SENSOR SIGNAL OR OTHER

• Switch the ignition ON (engine off or on).

• Compare the ambient temperature sensor on the LCD with the actual ambient temperature.

• Does the ambient temperature on the LCD correspond to the actual ambient temperature?

Yes

Go to Step 4.

Go to the next step.

INSPECT AMBIENT TEMPERATURE SENSOR

• Inspect the ambient temperature sensor.

(See \nAMBIENT TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is there any malfunction?

Yes

Replace the ambient temperature sensor.

(See \nAMBIENT TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

Inspect the following:

• Short or open circuit in wiring harness between ambient temperature sensor terminal A and PCM terminal 2I

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between ambient temperature sensor terminal A and PCM terminal 2I.

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 or open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short or open circuit.

• Open circuit in wiring harness between ambient temperature sensor terminal B and PCM terminal 2AJ

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between ambient temperature sensor terminal B and PCM terminal 2AJ.

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.

DETERMINE IF MALFUNCTION CAUSE IS DOOR LATCH SWITCH AND TRUNK LID LATCH SWITCH (4SD)/LIFTGATE LATCH SWITCH (WGN) SIGNAL OR OTHER

• Switch the ignition ON (engine off or on).

• Access the following rear body control module (RBCM) PIDs using the M-MDS:

(See \nPID/DATA MONITOR INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

― TRUNK

― DOOR_D

― DOOR_ALL

• Are the PID values congruent with the opening and closing of the doors and trunk (4SD)/liftgate (WGN)?

(See \nPID/DATA MONITOR TABLE [REAR BODY CONTROL MODULE (RBCM)].)

Yes

Go to Step 6.

Go to the next step.

INSPECT DOOR LATCH SWITCH AND TRUNK LID LATCH SWITCH (4SD)/LIFTGATE LATCH SWITCH (WGN)

• Inspect the PID-related switch in which the malfunction occurred in Step 4.

(See \nTRUNK LID LATCH SWITCH INSPECTION.)

(See \nLIFTGATE LATCH SWITCH INSPECTION.)

(See \nFRONT DOOR LATCH SWITCH INSPECTION.)

(See \nREAR DOOR LATCH SWITCH INSPECTION.)

• Is there any malfunction?

Yes

Replace the applicable switch.

(See \nTRUNK LID LATCH AND RELEASE ACTUATOR REMOVAL/INSTALLATION.)

(See \nLIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

(See \nFRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

(See \nREAR DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

Inspect the following in which the malfunction occurred in Step 4:

• Short to ground in wiring harness between door latch switch and rear body control module (RBCM)

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between door latch switch and rear body control module (RBCM).

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 ground.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short to ground.

• Open circuit in wiring harness between trunk lid latch switch (4SD)/liftgate latch switch (WGN) and rear body control module (RBCM)

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between trunk lid latch switch (4SD)/liftgate latch switch (WGN) and rear body control module (RBCM).

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.

DETERMINE IF MALFUNCTION CAUSE IS DRIVER-SIDE BUCKLE SWITCH SIGNAL OR OTHER

• Switch the ignition ON (engine off or on).

• Access the SAS control module PID SEAT_B_D using the M-MDS.

(See \nPID/DATA MONITOR INSPECTION.)

• Is the SEAT_B_D PID value congruent with the seat belt condition?

(See \nPID/DATA MONITOR TABLE.)

Yes

With manual air conditioner:

• Go to Step 10.

With full-auto air conditioner:

• Go to Step 8.

Go to the next step.

INSPECT DRIVER-SIDE BUCKLE SWITCH

• Inspect the driver-side buckle switch.

(See \nBUCKLE SWITCH INSPECTION.)

• Is there any malfunction?

Yes

Replace the driver-side buckle switch.

(See \nFRONT BUCKLE REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between driver-side buckle switch terminal 4A and SAS control module terminal 2U for a possible open circuit.

DETERMINE IF MALFUNCTION CAUSE IS CABIN TEMPERATURE SENSOR SIGNAL OR OTHER

• Access the climate control unit PID INC_TMP_SEN using the M-MDS.

(See \nPID/DATA MONITOR DISPLAY [FULL-AUTO AIR CONDITIONER].)

• Does the INC_TMP_SEN PID value indicate the actual cabin temperature of the vehicle?

Yes

Go to Step 10.

Go to the next step.

INSPECT CABIN TEMPERATURE SENSOR

• Inspect the cabin temperature sensor.

(See \nCABIN TEMPERATURE SENSOR INSPECTION [FULL-AUTO AIR CONDITIONER].)

• Is there any malfunction?

Yes

Replace the cabin temperature sensor.

(See \nCABIN TEMPERATURE SENSOR REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)

Inspect the wiring harness between the following terminals for a short or open circuit:

• Cabin temperature sensor terminal A—Climate control unit terminal 1H

• Cabin temperature sensor terminal B—Climate control unit terminal 1J

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Cabin temperature sensor terminal A—Climate control unit terminal 1H

• Cabin temperature sensor terminal B—Climate control unit terminal 1J

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 or open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short or open circuit.

10*

DETERMINE IF MALFUNCTION CAUSE IS BONNET LATCH SWITCH SIGNAL OR OTHER

• Switch the ignition ON (engine off or on).

• Access the rear body control module (RBCM) PID HOOD_SW using the M-MDS.

(See \nPID/DATA MONITOR INSPECTION [REAR BODY CONTROL MODULE (RBCM)].)

• Is the HOOD_SW PID value normal?

(See \nPID/DATA MONITOR TABLE [REAR BODY CONTROL MODULE (RBCM)].)

Yes

Go to Step 12.

Go to the next step.

INSPECT BONNET LATCH SWITCH

• Inspect the bonnet latch switch.

(See \nBONNET LATCH SWITCH INSPECTION.)

• Is there any malfunction?

Yes

Replace the bonnet latch switch.

(See \nBONNET LATCH AND RELEASE LEVER REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between bonnet latch switch terminal A and rear body control module (RBCM) terminal 3L for a possible short to ground.

DETERMINE IF MALFUNCTION IS CAUSED BY STEERING ANGLE (ESTIMATED ABSOLUTE ANGLE) SIGNAL ERROR

• Start the engine and idle it.

• Using the M-MDS, display EPS control module PID STR_ANG.

(See .\nELECTRIC POWER STEERING (EPS) ON-BOARD DIAGNOSIS)

• Are the monitoring values normal?

Yes

Go to Step 14.

Go to the next step.

INSPECT EPS CONTROL MODULE FOR MALFUNCTION

• Inspect the EPS control module.

(See \nEPS CONTROL MODULE INSPECTION.)

• Is the EPS control module normal?

Yes

Perform the following procedure:

1. Switch the ignition off, and after 2 min or more have elapsed, switch the ignition ON.

2. Start the engine and drive the vehicle 10 m or more in a straight line at a speed of 10 km/h or more.

3. Stop the vehicle with the wheels in the straight-ahead position.

4. Using the M-MDS, display EPS control module PID STR_ANG.

• If the STR_ANG value is normal, go to Step 18.(Because the steering angle (estimated absolute angle) has returned to normal)

• If the STR_ANG value is not normal, replace the EPS control module.

Go to Step 18.

(See \nSTEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

Replace the EPS control module.

Go to Step 18.

(See \nSTEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

DETERMINE IF MALFUNCTION CAUSE IS POWER BRAKE UNIT VACUUM SENSOR SIGNAL OR OTHER

• Turn off the i-stop system with i-stop OFF switch.

• Start the engine and run it is idling.

• Switch the ignition to off.

• Switch the ignition ON (engine off).

• Access the PCM PID BBP using the M-MDS while the brake pedal has been depressed several times.

(See \nON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

• Does the monitor value decrease every time the brake pedal is depressed?

Yes

With manual air conditioner:

• Go to Step 18.

With full-auto air conditioner:

• Go to Step 16.

Go to the next step.

INSPECT POWER BRAKE UNIT VACUUM SENSOR

• Inspect the power brake unit vacuum sensor.

(See \nPOWER BRAKE UNIT VACUUM SENSOR INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

• Is there any malfunction?

Yes

Replace the power brake unit vacuum sensor.

(See \nPOWER BRAKE UNIT VACUUM SENSOR REMOVAL/INSTALLATION.)

Inspect the wiring harness between the following terminals for a short or open circuit:

• Power brake unit vacuum sensor terminal C—PCM terminal 2BG

• Power brake unit vacuum sensor terminal B—PCM terminal 2Q

• Power brake unit vacuum sensor terminal A—PCM terminal 2AH

If there is any malfunction:

― Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:

• Power brake unit vacuum sensor terminal C—PCM terminal 2BG

• Power brake unit vacuum sensor terminal B—PCM terminal 2Q

• Power brake unit vacuum sensor terminal A—PCM terminal 2AH

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 or open circuit.

• Repair or replace the malfunctioning part.

If there is no common connector:

• Repair or replace the wiring harness which has a short or open circuit.

If there is no malfunction:

― Replace the PCM.

(See \nPCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

DETERMINE IF MALFUNCTION CAUSE IS DRIVER-SIDE AIR MIX ACTUATOR SIGNAL OR OTHER

• Measure the voltage at the following terminal (wiring harness-side) when the driver-side temperature setting is MAX HOT and MAX COLD.

― Climate control unit terminal 2G (L.H.D.)

― Climate control unit terminal 2E (R.H.D.)

• Is the voltage normal?

(See \nCLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].)