ERROR IS DISPLAYED ON VEHICLE IDENTIFICATION [VEHICLE INFORMATION ACQUISITION] SCREEN [TYPE-B (L.H.D.)]

• When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

• When inspecting the connector, touch it with a paper clip or similar thin pin without directly inserting a tester probe into the terminal.

• Disconnect the negative battery terminal before performing any work that requires handling of connectors.

Step	Inspection	Action
1	INSPECT FOR SHORT TO GROUND IN CAN-BUS NO.1 • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION) • Inspect for continuity at the following terminals: ― Between gateway unit (GWU) terminal 3X and body ground ― Between gateway unit (GWU) terminal 3W and body ground • Is there continuity?	Yes	Short to ground in CAN-BUS No.1 has occurred. Determine the location of a short to ground according to the diagnosis procedure for determining the location of a short to ground in CAN-BUS No.1. (See DETERMINING SHORT TO GROUND LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])
No	Go to the next step.
2	INSPECT FOR SHORT TO POWER SUPPLY IN CAN-BUS No.1 • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off). • Measure the voltage at gateway unit (GWU) terminal 3X and 3W. • Is the voltage between 1.5—3.5 V?	Yes	Go to the next step.
No	Short to power supply in CAN-BUS No.1 has occurred. Determine the location of a short to power supply according to the diagnosis procedure for determining the location of a short to power supply in CAN-BUS No.1. (See DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])
3	INSPECT FOR SHORT BETWEEN CIRCUITS IN CAN-BUS No.1 • Measure the voltage at gateway unit (GWU) terminal 3X and 3W • Is the voltage at gateway unit (GWU) terminal 3X and 3W the same?	Yes	Short between circuits in CAN-BUS No.1 has occurred. Determine the location of a short between circuits according to the diagnosis procedure for determining the location of a short between circuits in CAN-BUS No.1. (See DETERMINING SHORT BETWEEN CIRCUITS LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])
No	Go to the next step.
4	INSPECT FOR OPEN CIRCUIT IN THE WIRING HARNESS BETWEEN PCM AND GATE WAY UNIT (GWU) • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the SAS control module connector. • Disconnect the EPS control module connector. • Disconnect the start stop unit connector. • Disconnect the forward sensing camera (FSC) connector. • Disconnect the occupant classification sensor connector. • Disconnect the position memory control module connector. • Disconnect the electric parking brake control module connector. • Disconnect the DC-DC converter (i-ELOOP) connector. • Disconnect the 4WD control module connector. • Disconnect the NOx sensor No.1 connector. • Disconnect the NOx sensor No.2 connector. • Disconnect the PM sensor connector. • Disconnect the dosing control unit connector. • Disconnect the power liftgate (PLG) control module connector. • Disconnect the adaptive front lighting system (AFS) control module / auto leveling control module / adaptive LED headlights control module connector. • Disconnect the TCM connector. • Disconnect the radar unit connector. • Disconnect the DSC HU/CM connector. • Inspect for continuity at the following terminals: ― Between PCM terminal 2AK and gateway unit (GWU) terminal 3X (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Between PCM terminal 2AL and gateway unit (GWU) terminal 3W (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Between PCM terminal 2S and gateway unit (GWU) terminal 3X (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Between PCM terminal 2T and gateway unit (GWU) terminal 3W (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Between PCM terminal 2AK and front body control module (FBCM) terminal 2P (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Between PCM terminal 2AL and front body control module (FBCM) terminal 2N (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Between PCM terminal 2S and front body control module (FBCM) terminal 2P (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Between PCM terminal 2T and front body control module (FBCM) terminal 2N (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Between front body control module (FBCM) terminal 2K and gateway unit (GWU) terminal 3X ― Between front body control module (FBCM) terminal 2I and gateway unit (GWU) terminal 3W ― Between front body control module (FBCM) terminal 2K and front body control module (FBCM) terminal 2P ― Between front body control module (FBCM) terminal 2I and front body control module (FBCM) terminal 2N • Is there continuity?	Yes	Because the circuit between the PCM and gateway unit (GWU) is currently normal, go back to the [TROUBLESHOOTING PROCEDURE].
No	• Any of the following malfunctions may have occurred. ― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2AK and gateway unit (GWU) terminal 3X. (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2AL and gateway unit (GWU) terminal 3W. (SKYACTIV-G 2.5T, SKYACTIV-D 2.2) ― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2S and gateway unit (GWU) terminal 3X. (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2T and gateway unit (GWU) terminal 3W. (SKYACTIV-G 2.0, SKYACTIV-G 2.5) ― Replace the gateway unit (GWU) because there is a short to the power supply in the gateway unit (GWU). (See GATEWAY UNIT (GWU) REMOVAL/INSTALLATION [TYPE-B].) ― Replace the front body control module (FBCM) because there is a short to the power supply in the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.) ― Replace the PCM because there is a short to ground in the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].) (See PCM REMOVAL/INSTALLATION [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].) (See PCM REMOVAL/INSTALLATION [WITH CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].)

Step

Inspection

Action

INSPECT FOR SHORT TO GROUND IN CAN-BUS NO.1

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION)

• Inspect for continuity at the following terminals:

― Between gateway unit (GWU) terminal 3X and body ground

― Between gateway unit (GWU) terminal 3W and body ground

• Is there continuity?

Yes

Short to ground in CAN-BUS No.1 has occurred.

Determine the location of a short to ground according to the diagnosis procedure for determining the location of a short to ground in CAN-BUS No.1.

(See DETERMINING SHORT TO GROUND LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])

Go to the next step.

INSPECT FOR SHORT TO POWER SUPPLY IN CAN-BUS No.1

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the ignition ON (engine off).

• Measure the voltage at gateway unit (GWU) terminal 3X and 3W.

• Is the voltage between 1.5—3.5 V?

Yes

Go to the next step.

Short to power supply in CAN-BUS No.1 has occurred.

Determine the location of a short to power supply according to the diagnosis procedure for determining the location of a short to power supply in CAN-BUS No.1.

(See DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])

INSPECT FOR SHORT BETWEEN CIRCUITS IN CAN-BUS No.1

• Measure the voltage at gateway unit (GWU) terminal 3X and 3W

• Is the voltage at gateway unit (GWU) terminal 3X and 3W the same?

Yes

Short between circuits in CAN-BUS No.1 has occurred.

Determine the location of a short between circuits according to the diagnosis procedure for determining the location of a short between circuits in CAN-BUS No.1.

(See DETERMINING SHORT BETWEEN CIRCUITS LOCATION (CAN-BUS No.1) [TYPE-B (L.H.D.)])

Go to the next step.

INSPECT FOR OPEN CIRCUIT IN THE WIRING HARNESS BETWEEN PCM AND GATE WAY UNIT (GWU)

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the SAS control module connector.

• Disconnect the EPS control module connector.

• Disconnect the start stop unit connector.

• Disconnect the forward sensing camera (FSC) connector.

• Disconnect the occupant classification sensor connector.

• Disconnect the position memory control module connector.

• Disconnect the electric parking brake control module connector.

• Disconnect the DC-DC converter (i-ELOOP) connector.

• Disconnect the 4WD control module connector.

• Disconnect the NOx sensor No.1 connector.

• Disconnect the NOx sensor No.2 connector.

• Disconnect the PM sensor connector.

• Disconnect the dosing control unit connector.

• Disconnect the power liftgate (PLG) control module connector.

• Disconnect the adaptive front lighting system (AFS) control module / auto leveling control module / adaptive LED headlights control module connector.

• Disconnect the TCM connector.

• Disconnect the radar unit connector.

• Disconnect the DSC HU/CM connector.

• Inspect for continuity at the following terminals:

― Between PCM terminal 2AK and gateway unit (GWU) terminal 3X (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Between PCM terminal 2AL and gateway unit (GWU) terminal 3W (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Between PCM terminal 2S and gateway unit (GWU) terminal 3X (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Between PCM terminal 2T and gateway unit (GWU) terminal 3W (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Between PCM terminal 2AK and front body control module (FBCM) terminal 2P (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Between PCM terminal 2AL and front body control module (FBCM) terminal 2N (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Between PCM terminal 2S and front body control module (FBCM) terminal 2P (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Between PCM terminal 2T and front body control module (FBCM) terminal 2N (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Between front body control module (FBCM) terminal 2K and gateway unit (GWU) terminal 3X

― Between front body control module (FBCM) terminal 2I and gateway unit (GWU) terminal 3W

― Between front body control module (FBCM) terminal 2K and front body control module (FBCM) terminal 2P

― Between front body control module (FBCM) terminal 2I and front body control module (FBCM) terminal 2N

• Is there continuity?

Yes

Because the circuit between the PCM and gateway unit (GWU) is currently normal, go back to the [TROUBLESHOOTING PROCEDURE].

• Any of the following malfunctions may have occurred.

― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2AK and gateway unit (GWU) terminal 3X. (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2AL and gateway unit (GWU) terminal 3W. (SKYACTIV-G 2.5T, SKYACTIV-D 2.2)

― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2S and gateway unit (GWU) terminal 3X. (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Repair or replace the wiring harness because there is an open circuit in the wiring harness between PCM terminal 2T and gateway unit (GWU) terminal 3W. (SKYACTIV-G 2.0, SKYACTIV-G 2.5)

― Replace the gateway unit (GWU) because there is a short to the power supply in the gateway unit (GWU).

(See GATEWAY UNIT (GWU) REMOVAL/INSTALLATION [TYPE-B].)

― Replace the front body control module (FBCM) because there is a short to the power supply in the front body control module (FBCM).

(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)

― Replace the PCM because there is a short to ground in the PCM.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

(See PCM REMOVAL/INSTALLATION [WITHOUT CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].)

(See PCM REMOVAL/INSTALLATION [WITH CYLINDER DEACTIVATION (SKYACTIV-G 2.0, SKYACTIV-G 2.5)].)