DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.7) [(E)]

• 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 CAN LINE BETWEEN CONNECTOR C-49 AND BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Disconnect the connector C-49. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q. • 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 ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Disconnect the connector 4 which has body control module (BCM) terminals 4R and 4Q. • Connect the connector C-49. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q (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 [(E)].)
No	Repair or replace the wiring harness between the body control module (BCM) and connector C-49 because the wiring harness is shorted to the power supply.
3	INSPECT JB No.2 FOR SHORT TO POWER SUPPLY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Connect the connector C-49. • Disconnect the connector C-48. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q. • Is the voltage between 1.5—3.5 V?	Yes	Go to the next step.
No	Replace the JB No.2 because there is a short to the power supply in the JB No.2.
4	INSPECT CAN LINE BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-48 FOR SHORT TO POWER SUPPLY • Measure the voltage at audio amplifier terminals 2N and 2M. (With Bose^® type audio) • Measure the voltage at audio amplifier terminals 1Q and 1S. (Without Bose^® type audio) • Is the voltage between 1.5—3.5 V?	Yes	Go to Step 6.
No	Go to the next step.
5	INSPECT AUDIO AMPLIFIER FOR SHORT TO POWER SUPPLY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Disconnect the audio amplifier connector. • Connect the connector C-48. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q. • Is the voltage between 1.5—3.5 V?	Yes	Replace the audio amplifier because there is a short to the power supply in the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION [(E)].)
No	Repair or replace the wiring harness between the audio amplifier and connector C-48 because the wiring harness is shorted to the power supply.
6	INSPECT CAN LINE BETWEEN CONNECTOR C-48 AND CONNECTOR C-13 FOR SHORT TO POWER SUPPLY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Connect the connector C-48. • Disconnect the connector C-13. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q. • Is the voltage between 1.5—3.5 V?	Yes	Go to the next step.
No	Repair or replace the wiring harness between the connector C-48 and connector C-13 because the wiring harness is shorted to the power supply.
7	INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT TO POWER SUPPLY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)]) • Disconnect the connectivity master unit (CMU) connector. • Connect the connector C-13. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)]) • Switch the ignition ON (engine off). • Measure the voltage at body control module (BCM) terminals 4R and 4Q. • Is the voltage between 1.5—3.5 V?	Yes	Replace the connectivity master unit (CMU) because there is a short to the power supply in the connectivity master unit (CMU). (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)
No	Repair or replace the wiring harness between the connectivity master unit (CMU) and connector C-13 because the wiring harness is shorted to the power supply.

Step

Inspection

Action

INSPECT CAN LINE BETWEEN CONNECTOR C-49 AND BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Disconnect the connector C-49.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q.

• 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 ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Disconnect the connector 4 which has body control module (BCM) terminals 4R and 4Q.

• Connect the connector C-49.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q (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 [(E)].)

Repair or replace the wiring harness between the body control module (BCM) and connector C-49 because the wiring harness is shorted to the power supply.

INSPECT JB No.2 FOR SHORT TO POWER SUPPLY

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Connect the connector C-49.

• Disconnect the connector C-48.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q.

• Is the voltage between 1.5—3.5 V?

Yes

Go to the next step.

Replace the JB No.2 because there is a short to the power supply in the JB No.2.

INSPECT CAN LINE BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-48 FOR SHORT TO POWER SUPPLY

• Measure the voltage at audio amplifier terminals 2N and 2M. (With Bose^® type audio)

• Measure the voltage at audio amplifier terminals 1Q and 1S. (Without Bose^® type audio)

• Is the voltage between 1.5—3.5 V?

Yes

Go to Step 6.

Go to the next step.

INSPECT AUDIO AMPLIFIER FOR SHORT TO POWER SUPPLY

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Disconnect the audio amplifier connector.

• Connect the connector C-48.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q.

• Is the voltage between 1.5—3.5 V?

Yes

Replace the audio amplifier because there is a short to the power supply in the audio amplifier.

(See AUDIO AMPLIFIER REMOVAL/INSTALLATION [(E)].)

Repair or replace the wiring harness between the audio amplifier and connector C-48 because the wiring harness is shorted to the power supply.

INSPECT CAN LINE BETWEEN CONNECTOR C-48 AND CONNECTOR C-13 FOR SHORT TO POWER SUPPLY

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Connect the connector C-48.

• Disconnect the connector C-13.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q.

• Is the voltage between 1.5—3.5 V?

Yes

Go to the next step.

Repair or replace the wiring harness between the connector C-48 and connector C-13 because the wiring harness is shorted to the power supply.

INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT TO POWER SUPPLY

• Switch the ignition off.

• Disconnect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)])

• Disconnect the connectivity master unit (CMU) connector.

• Connect the connector C-13.

• Connect the negative battery terminal.

(See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)])

• Switch the ignition ON (engine off).

• Measure the voltage at body control module (BCM) terminals 4R and 4Q.

• Is the voltage between 1.5—3.5 V?

Yes

Replace the connectivity master unit (CMU) because there is a short to the power supply in the connectivity master unit (CMU).

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

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

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