DETERMINING SHORT BETWEEN CIRCUITS LOCATION (CAN-BUS No.3) [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 BETWEEN GATEWAY UNIT (GWU) AND DLC-2 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. • Inspect for continuity between gateway unit (GWU) terminals 3T and 3S (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between gateway unit (GWU) and DLC-2 because the wiring harness is shorted between circuits.
No	Go to the next step.
2	INSPECT GATEWAY UNIT (GWU) FOR SHORT BETWEEN CIRCUITS • Disconnect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q. • Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off). • Measure the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side). • Is the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side) the same?	Yes	Go to the next step.
No	Replace the gateway unit (GWU) because there is a short between circuits in the gateway unit (GWU). (See GATEWAY UNIT (GWU) REMOVAL/INSTALLATION [TYPE-B].)
3	INSPECT BETWEEN GATEWAY UNIT (GWU) AND CONNECTOR C-17 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector C-17. • Connect the connector 3 which has gateway unit (GWU) terminals 3T and 3S. • Connect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q. • 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. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between gateway unit (GWU) and connector C-17 because the wiring harness is shorted between circuits.
No	Go to the next step.
4	INSPECT BETWEEN CONNECTOR C-17 AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector C-71. • Connect the connector C-17. • 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. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-17 and connector C-71 because the wiring harness is shorted between circuits.
No	Go to the next step.
5	INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Inspect for continuity between audio amplifier terminals 2N and 2M. (with Bose® type audio) • Inspect for continuity between audio amplifier terminals 1Q and 1S. (without Bose® type audio) • Is there continuity?	Yes	Go to the next step.
No	Go to Step 7.
6	INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS • Disconnect the audio amplifier connector. • Inspect for continuity between audio amplifier terminals 2N and 2M (wiring harness side). (with Bose® type audio) • Inspect for continuity between audio amplifier terminals 1Q and 1S (wiring harness side). (without Bose® type audio) • Is there continuity?	Yes	Repair or replace the wiring harness between the audio amplifier and connector C-71 because the wiring harness is shorted between circuits.
No	Replace the audio amplifier because there is a short between circuits in the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
7	INSPECT BETWEEN 360° VIEW MONITOR CONTROL MODULE AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between 360° view monitor control module terminals 1C and 1A. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 9.
8	INSPECT 360° VIEW MONITOR CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the audio 360° view monitor control module. • Inspect for continuity between 360° view monitor control module terminals 1C and 1A (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the 360° view monitor control module and connector C-71 because the wiring harness is shorted between circuits.
No	Replace the 360° view monitor control module because there is a short between circuits in the 360° view monitor control module. (See 360°VIEW MONITOR CONTROL MODULE REMOVAL/INSTALLATION.)
9	INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-13 FOR SHORT BETWEEN CIRCUITS • Disconnect the connector C-13. • Inspect for continuity between connectivity master unit (CMU) terminals 1Q and 1O. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-71 and connector C-13 because the wiring harness is shorted between circuits.
10	INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS • Disconnect the connectivity master unit (CMU). • Inspect for continuity between connectivity master unit (CMU) terminals 1Q and 1O (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-13 because the wiring harness is shorted between circuits.
No	Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU). (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)

Step

Inspection

Action

INSPECT BETWEEN GATEWAY UNIT (GWU) AND DLC-2 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector 3 which has gateway unit (GWU) terminals 3T and 3S.

• Inspect for continuity between gateway unit (GWU) terminals 3T and 3S (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between gateway unit (GWU) and DLC-2 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT GATEWAY UNIT (GWU) FOR SHORT BETWEEN CIRCUITS

• Disconnect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q.

• Connect the negative battery cable.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the ignition ON (engine off).

• Measure the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side).

• Is the voltage at gateway unit (GWU) terminals 4R and 4Q (wiring harness side) the same?

Yes

Go to the next step.

Replace the gateway unit (GWU) because there is a short between circuits in the gateway unit (GWU).

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

INSPECT BETWEEN GATEWAY UNIT (GWU) AND CONNECTOR C-17 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector C-17.

• Connect the connector 3 which has gateway unit (GWU) terminals 3T and 3S.

• Connect the connector 4 which has gateway unit (GWU) terminals 4R and 4Q.

• 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.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between gateway unit (GWU) and connector C-17 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN CONNECTOR C-17 AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector C-71.

• Connect the connector C-17.

• 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.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-17 and connector C-71 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Inspect for continuity between audio amplifier terminals 2N and 2M. (with Bose® type audio)

• Inspect for continuity between audio amplifier terminals 1Q and 1S. (without Bose® type audio)

• Is there continuity?

Yes

Go to the next step.

Go to Step 7.

INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS

• Disconnect the audio amplifier connector.

• Inspect for continuity between audio amplifier terminals 2N and 2M (wiring harness side). (with Bose® type audio)

• Inspect for continuity between audio amplifier terminals 1Q and 1S (wiring harness side). (without Bose® type audio)

• Is there continuity?

Yes

Repair or replace the wiring harness between the audio amplifier and connector C-71 because the wiring harness is shorted between circuits.

Replace the audio amplifier because there is a short between circuits in the audio amplifier.

(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)

INSPECT BETWEEN 360° VIEW MONITOR CONTROL MODULE AND CONNECTOR C-71 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between 360° view monitor control module terminals 1C and 1A.

• Is there continuity?

Yes

Go to the next step.

Go to Step 9.

INSPECT 360° VIEW MONITOR CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the audio 360° view monitor control module.

• Inspect for continuity between 360° view monitor control module terminals 1C and 1A (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the 360° view monitor control module and connector C-71 because the wiring harness is shorted between circuits.

Replace the 360° view monitor control module because there is a short between circuits in the 360° view monitor control module.

(See 360°VIEW MONITOR CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOR C-13 FOR SHORT BETWEEN CIRCUITS

• Disconnect the connector C-13.

• Inspect for continuity between connectivity master unit (CMU) terminals 1Q and 1O.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-71 and connector C-13 because the wiring harness is shorted between circuits.

INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS

• Disconnect the connectivity master unit (CMU).

• Inspect for continuity between connectivity master unit (CMU) terminals 1Q and 1O (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-13 because the wiring harness is shorted between circuits.

Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU).

(See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)