DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.4) [R.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 lead-acid battery terminal before performing any work that requires handling of connectors.

Step	Inspection	Action
1	INSPECT CAN LINE BETWEEN BODY CONTROL MODULE (BCM) AND CONNECTOR C-09 FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector C-09. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B. • Is the voltage between 1.5—3.5 V?	Yes	Go to Step 3.
No	Go to the next step.
2	INSPECT BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector 2 which has body control module (BCM) terminals 2D and 2B. • Connect the connector C-09. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B (wiring harness side). • Is the voltage between 1.5—3.5 V?	Yes	Replace the body control module (BCM) because there is a short to the power supply in the body control module (BCM). (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between the body control module (BCM) and connector C-09 because the wiring harness is shorted to the power supply.
3	INSPECT CAN LINE BETWEEN CONNECTOR C-09 AND CONNECTORS C-50, C-51 FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connectors C-50, C-51. • Connect the connector C-09. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B. • Is the voltage between 1.5—3.5 V?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-09 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.
4	INSPECT CAN LINE BETWEEN PARKING ASSIST UNIT (ULTRASONIC) AND CONNECTORS C-50, C-51 • Measure the voltage at parking assist unit (ultrasonic) terminals 1X and 1Z. • Is the voltage between 1.5—3.5 V?	Yes	Go to Step 7.
No	Go to the next step.
5	INSPECT CAN LINE BETWEEN PARKING ASSIST UNIT (ULTRASONIC) AND CONNECTOR C-61 FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the connector C-61. • Disconnect the parking assist unit (ultrasonic) connector. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at parking assist unit (ultrasonic) terminals 1X and 1Z. • Is the voltage between 1.5—3.5 V?	Yes	Repair or replace the wiring harness between the connector C-61 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.
No	Go to the next step.
6	INSPECT PARKING ASSIST UNIT (ULTRASONIC) FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Connect the connector C-61. • Connect the connectors C-50, C-51. • Disconnect the parking assist unit (ultrasonic) connector. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B. • Is the voltage between 1.5—3.5 V?	Yes	Replace the parking assist unit (ultrasonic) because there is a short to the power supply in the parking assist unit (ultrasonic). (See PARKING ASSIST UNIT (ULTRASONIC) REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between the parking assist unit (ultrasonic) and connector C-61 because the wiring harness is shorted to the power supply.
7	INSPECT CAN LINE BETWEEN CONNECTORS C-50, C-51 AND REAR SIDE RADAR SENSOR (RH) FOR SHORT TO POWER SUPPLY • Measure the voltage at rear side radar sensor (RH) terminals C and D. • Is the voltage between 1.5—3.5 V?	Yes	Go to Step 10.
No	Go to the next step.
8	INSPECT CAN LINE BETWEEN REAR SIDE RADAR SENSOR (RH) AND CONNECTOR C-62 FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Connect the connectors C-50, C-51. • Disconnect the connector C-62. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at rear side radar sensor (RH) terminals C and D. • Is the voltage between 1.5—3.5 V?	Yes	Repair or replace the wiring harness between the connector C-62 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.
No	Go to the next step.
9	INSPECT REAR SIDE RADAR SENSOR (RH) FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Connect the connector C-62. • Disconnect the rear side radar sensor (RH) connector. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B. • Is the voltage between 1.5—3.5 V?	Yes	Replace the rear side radar sensor (RH) because there is a short to the power supply in the rear side radar sensor (RH). (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between the rear side radar sensor (RH) and connector C-62 because the wiring harness is shorted to the power supply.
10	INSPECT ELECTRICAL SUPPLY UNIT (ESU) FOR SHORT TO POWER SUPPLY • Switch the main power OFF. • Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Connect the connectors C-50, C-51. • Disconnect the electrical supply unit (ESU) connector. • Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the main power ON (READY off). • Measure the voltage at body control module (BCM) terminals 2D and 2B. • Is the voltage between 1.5—3.5 V?	Yes	Replace the electrical supply unit (ESU) because there is a short to the power supply in the electrical supply unit (ESU). (See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between the electrical supply unit (ESU) and connectors C-50, C-51 because the wiring harness is shorted to the power supply.

Step

Inspection

Action

INSPECT CAN LINE BETWEEN BODY CONTROL MODULE (BCM) AND CONNECTOR C-09 FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector C-09.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B.

• Is the voltage between 1.5—3.5 V?

Yes

Go to Step 3.

Go to the next step.

INSPECT BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector 2 which has body control module (BCM) terminals 2D and 2B.

• Connect the connector C-09.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B (wiring harness side).

• Is the voltage between 1.5—3.5 V?

Yes

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

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between the body control module (BCM) and connector C-09 because the wiring harness is shorted to the power supply.

INSPECT CAN LINE BETWEEN CONNECTOR C-09 AND CONNECTORS C-50, C-51 FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connectors C-50, C-51.

• Connect the connector C-09.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B.

• Is the voltage between 1.5—3.5 V?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-09 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.

INSPECT CAN LINE BETWEEN PARKING ASSIST UNIT (ULTRASONIC) AND CONNECTORS C-50, C-51

• Measure the voltage at parking assist unit (ultrasonic) terminals 1X and 1Z.

• Is the voltage between 1.5—3.5 V?

Yes

Go to Step 7.

Go to the next step.

INSPECT CAN LINE BETWEEN PARKING ASSIST UNIT (ULTRASONIC) AND CONNECTOR C-61 FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Disconnect the connector C-61.

• Disconnect the parking assist unit (ultrasonic) connector.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at parking assist unit (ultrasonic) terminals 1X and 1Z.

• Is the voltage between 1.5—3.5 V?

Yes

Repair or replace the wiring harness between the connector C-61 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.

Go to the next step.

INSPECT PARKING ASSIST UNIT (ULTRASONIC) FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Connect the connector C-61.

• Connect the connectors C-50, C-51.

• Disconnect the parking assist unit (ultrasonic) connector.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B.

• Is the voltage between 1.5—3.5 V?

Yes

Replace the parking assist unit (ultrasonic) because there is a short to the power supply in the parking assist unit (ultrasonic).

(See PARKING ASSIST UNIT (ULTRASONIC) REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between the parking assist unit (ultrasonic) and connector C-61 because the wiring harness is shorted to the power supply.

INSPECT CAN LINE BETWEEN CONNECTORS C-50, C-51 AND REAR SIDE RADAR SENSOR (RH) FOR SHORT TO POWER SUPPLY

• Measure the voltage at rear side radar sensor (RH) terminals C and D.

• Is the voltage between 1.5—3.5 V?

Yes

Go to Step 10.

Go to the next step.

INSPECT CAN LINE BETWEEN REAR SIDE RADAR SENSOR (RH) AND CONNECTOR C-62 FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Connect the connectors C-50, C-51.

• Disconnect the connector C-62.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at rear side radar sensor (RH) terminals C and D.

• Is the voltage between 1.5—3.5 V?

Yes

Repair or replace the wiring harness between the connector C-62 and connectors C-50, C-51 because the wiring harness is shorted to the power supply.

Go to the next step.

INSPECT REAR SIDE RADAR SENSOR (RH) FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Connect the connector C-62.

• Disconnect the rear side radar sensor (RH) connector.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B.

• Is the voltage between 1.5—3.5 V?

Yes

Replace the rear side radar sensor (RH) because there is a short to the power supply in the rear side radar sensor (RH).

(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between the rear side radar sensor (RH) and connector C-62 because the wiring harness is shorted to the power supply.

INSPECT ELECTRICAL SUPPLY UNIT (ESU) FOR SHORT TO POWER SUPPLY

• Switch the main power OFF.

• Disconnect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Connect the connectors C-50, C-51.

• Disconnect the electrical supply unit (ESU) connector.

• Connect the negative lead-acid battery terminal.

(See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

• Switch the main power ON (READY off).

• Measure the voltage at body control module (BCM) terminals 2D and 2B.

• Is the voltage between 1.5—3.5 V?

Yes

Replace the electrical supply unit (ESU) because there is a short to the power supply in the electrical supply unit (ESU).

(See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION.)

Repair or replace the wiring harness between the electrical supply unit (ESU) and connectors C-50, C-51 because the wiring harness is shorted to the power supply.