ERROR IS DISPLAYED ON VEHICLE IDENTIFICATION [BETWEEN VEHICLE AND VCM-2] SCREEN [TYPE-B (R.H.D.)]

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Caution

•  Perform the following malfunction diagnosis only when vehicle identification [between vehicle and VCM-2] is not passed according to the [TROUBLESHOOTING PROCEDURE]. (See TROUBLESHOOTING PROCEDURE.)

System Wiring Diagram

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Determination Procedure

Caution

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

•  When inspecting the DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.

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

Step	Inspection		Action
1	INSPECT DLC-2 GROUND CIRCUIT •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Inspect for continuity between DLC-2 terminal J and body ground. •  Is there continuity?	Yes	Go to the next step.
		No	A malfunction has occurred between DLC-2 and body ground. •  Repair or replace the malfunctioning location.
2	Measure the voltage at DLC-2. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  Measure the voltage at DLC-2 terminal A. •  Is the voltage B+?	Yes	Go to the next step.
		No	A malfunction has occurred between DLC-2 and battery. •  Inspect the following fuse or wiring harness. ―  ENG. +B 7.5 A fuse ―  Wiring harness between DLC-2 terminal A and ENG. +B 7.5 A fuse •  Repair or replace the malfunctioning location.
3	INSPECT CAN LINE BETWEEN DLC-2 AND GATEWAY UNIT (GWU) FOR SHORT TO POWER SUPPLY •  Measure the voltage at DLC-2 terminals F and E. (CAN-BUS No.1, No.3, No.4) •  Measure the voltage at DLC-2 terminals L and K. (CAN-BUS No.2) •  Is the voltage between 1.5—3.5 V?	Yes	Go to Step 5.
		No	Go to the next step.
4	INSPECT GATEWAY UNIT (GWU) FOR SHORT TO POWER SUPPLY •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. (CAN-BUS No.1, No.3, No.4) •  Disconnect the connector 2 which has gateway unit (GWU) terminals 2H and 2F. (CAN-BUS No.2) •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  Measure the voltage at DLC-2 terminals F and E. (CAN-BUS No.1, No.3, No.4) •  Measure the voltage at DLC-2 terminals L and K. (CAN-BUS No.2) •  Is the voltage between 0 V?	Yes	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].)
		No	Repair or replace the wiring harness between the gateway unit (GWU) and DLC-2 because the wiring harness is shorted to the power supply.
5	INSPECT CAN LINE BETWEEN DLC-2 AND GATEWAY UNIT (GWU) FOR SHORT BETWEEN CIRCUITS •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. (CAN-BUS No.1, No.3, No.4) •  Disconnect the connector 2 which has gateway unit (GWU) terminals 2H and 2F. (CAN-BUS No.2) •  Inspect for continuity between DLC-2 terminals F and E. (CAN-BUS No.1, No.3, No.4) •  Inspect for continuity between DLC-2 terminals L and K. (CAN-BUS No.2) •  Is there continuity?	Yes	Repair or replace the wiring harness between the DLC-2 and gateway unit (GWU) because the wiring harness is shorted between circuits.
		No	Go to the next step.
6	INSPECT GATEWAY UNIT (GWU) FOR SHORT BETWEEN CIRCUITS •  Connect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. (CAN-BUS No.1, No.3, No.4) •  Connect the connector 2 which has gateway unit (GWU) terminals 2H and 2F. (CAN-BUS No.2) •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  Measure the voltage at DLC-2 terminals F and E. (CAN-BUS No.1, No.3, No.4) •  Measure the voltage at DLC-2 terminals L and K. (CAN-BUS No.2) •  Is the voltage at DLC-2 terminals F and E the same? (CAN-BUS No.1, No.3, No.4) •  Is the voltage at DLC-2 terminals L and K the same? (CAN-BUS No.2)	Yes	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].)
		No	Go to the next step.
7	INSPECT FOR SHORT TO GROUND BETWEEN DLC-2 AND GATEWAY UNIT (GWU) •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION) •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminals F and body ground (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminals E and body ground (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminals L and body ground (CAN-BUS No.2) ―  Between DLC-2 terminals K and body ground (CAN-BUS No.2) •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 9.
8	INSPECT CAN LINE IN GATEWAY UNIT (GWU) FOR SHORT TO GROUND •  Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. (CAN-BUS No.1, No.3, No.4) •  Disconnect the connector 2 which has gateway unit (GWU) terminals 2H and 2F. (CAN-BUS No.2) •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminals F and body ground (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminals E and body ground (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminals L and body ground (CAN-BUS No.2) ―  Between DLC-2 terminals K and body ground (CAN-BUS No.2) •  Is there continuity?	Yes	Repair or replace the wiring harness between the DLC-2 and gateway unit (GWU) because the wiring harness is shorted to ground.
		No	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].)
9	VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN DLC-2 AND GATEWAY UNIT (GWU) •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminal F and gateway unit (GWU) terminals 3T (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminal E and gateway unit (GWU) terminals 3S (CAN-BUS No.1, No.3, No.4) ―  Between DLC-2 terminal L and gateway unit (GWU) terminals 2H (CAN-BUS No.2) ―  Between DLC-2 terminal K and gateway unit (GWU) terminals 2F (CAN-BUS No.2) •  Is there continuity?	Yes	Because the circuit between the vehicle and VCM-2 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 DLC-2 terminal F and gateway unit (GWU) terminal 3T. (CAN-BUS No.1, No.3, No.4) ―  Repair or replace the wiring harness because there is an open circuit in the wiring harness between DLC-2 terminal E and gateway unit (GWU) terminal 3S. (CAN-BUS No.1, No.3, No.4) ―  Repair or replace the wiring harness because there is an open circuit in the wiring harness between DLC-2 terminal L and gateway unit (GWU) terminal 2H. (CAN-BUS No.2) ―  Repair or replace the wiring harness because there is an open circuit in the wiring harness between DLC-2 terminal K and gateway unit (GWU) terminal 2F. (CAN-BUS No.2) ―  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].)