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DETERMINING SHORT TO GROUND LOCATION (CAN-BUS No.4) [(E)]

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Caution

•  Perform the following malfunction diagnosis only when it is diagnosed with a short to ground by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

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

Step	Inspection		Action
1	INSPECT FOR SHORT TO GROUND BETWEEN BODY CONTROL MODULE (BCM) AND CONNECTOR C-08 •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)]) •  Disconnect the connector C-08. •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D and body ground ―  Between body control module (BCM) terminal 2B and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 3.
2	INSPECT CAN LINE IN BODY CONTROL MODULE (BCM) FOR SHORT TO GROUND •  Disconnect the connector 2 which has body control module (BCM) terminals 2D and 2B. •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D (wiring harness side) and body ground ―  Between body control module (BCM) terminal 2B (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the connector C-08 and body control module (BCM) because the wiring harness is shorted to ground.
		No	Replace the body control module (BCM) because there is a short to ground in the body control module (BCM). (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [(E)].)
3	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-08 AND CONNECTOR C-69 •  Disconnect the connector C-69. •  Connect the connector C-08. •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D and body ground ―  Between body control module (BCM) terminal 2B and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the connector C-08 and connector C-69 because the wiring harness is shorted to ground.
		No	Go to the next step.
4	INSPECT FOR SHORT TO GROUND BETWEEN ELECTRICAL SUPPLY UNIT (ESU) AND CONNECTOR C-69 •  Inspect for continuity at the following terminals: ―  Between electrical supply unit (ESU) terminal 1X and body ground ―  Between electrical supply unit (ESU) terminal 1W and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 6. (with parking sensor system) Go to Step 11. (without parking sensor system)
5	INSPECT CAN LINE IN ELECTRICAL SUPPLY UNIT (ESU) FOR SHORT TO GROUND •  Disconnect the electrical supply unit (ESU) connector. •  Inspect for continuity at the following terminals: ―  Between electrical supply unit (ESU) terminal 1X (wiring harness side) and body ground ―  Between electrical supply unit (ESU) terminal 1W (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the electrical supply unit (ESU) and connector C-69 because the wiring harness is shorted to ground.
		No	Replace the electrical supply unit (ESU) because there is a short to ground in the electrical supply unit (ESU). (See ELECTRICAL SUPPLY UNIT (ESU) REMOVAL/INSTALLATION.)
6	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-58 AND CONNECTOR C-69 •  Disconnect the connector C-58. •  Connect the connector C-69. •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D and body ground ―  Between body control module (BCM) terminal 2B and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the connector C-58 and connector C-69 because the wiring harness is shorted to ground.
		No	Go to the next step.
7	INSPECT FOR SHORT TO GROUND BETWEEN PARKING ASSIST UNIT (ULTRASONIC) AND CONNECTOR C-58 •  Inspect for continuity at the following terminals: ―  Between parking assist unit (ultrasonic) terminal 1X and body ground ―  Between parking assist unit (ultrasonic) terminal 1Z and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 9.
8	INSPECT CAN LINE IN PARKING ASSIST UNIT (ULTRASONIC) FOR SHORT TO GROUND •  Disconnect the parking assist unit (ultrasonic) connector. •  Inspect for continuity at the following terminals: ―  Between parking assist unit (ultrasonic) terminal 1X (wiring harness side) and body ground ―  Between parking assist unit (ultrasonic) terminal 1Z (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the parking assist unit (ultrasonic) and connector C-58 because the wiring harness is shorted to ground.
		No	Replace the parking assist unit (ultrasonic) because there is a short to ground in the parking assist unit (ultrasonic). (See PARKING ASSIST UNIT (ULTRASONIC) REMOVAL/INSTALLATION.)
9	INSPECT FOR SHORT TO GROUND BETWEEN REAR SIDE RADAR SENSOR (RH) AND CONNECTOR C-70 •  Disconnect the connector C-70. •  Inspect for continuity at the following terminals: ―  Between rear side radar sensor (RH) terminal C and body ground ―  Between rear side radar sensor (RH) terminal D and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between connector C-70 and connector C-58 because the wiring harness is shorted to ground.
10	INSPECT CAN LINE IN REAR SIDE RADAR SENSOR (RH) FOR SHORT TO GROUND •  Disconnect the rear side radar sensor (RH) connector. •  Inspect for continuity at the following terminals: ―  Between rear side radar sensor (RH) terminal C (wiring harness side) and body ground ―  Between rear side radar sensor (RH) terminal D (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the rear side radar sensor (RH) and connector C-70 because the wiring harness is shorted to ground.
		No	Replace the rear side radar sensor (RH) because there is a short to ground in the rear side radar sensor (RH). (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)
11	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-68 AND CONNECTOR C-69 •  Disconnect the connector C-68. •  Connect the connector C-69. •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D and body ground ―  Between body control module (BCM) terminal 2B and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the connector C-68 and connector C-69 because the wiring harness is shorted to ground.
		No	Go to the next step.
12	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-70 AND CONNECTOR C-68 •  Disconnect the connector C-70. •  Connect the connector C-68 •  Inspect for continuity at the following terminals: ―  Between body control module (BCM) terminal 2D and body ground ―  Between body control module (BCM) terminal 2B and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the connector C-70 and connector C-68 because the wiring harness is shorted to ground.
		No	Go to the next step.
13	INSPECT CAN LINE IN REAR SIDE RADAR SENSOR (RH) FOR SHORT TO GROUND •  Disconnect the rear side radar sensor (RH) connector. •  Inspect for continuity at the following terminals: ―  Between rear side radar sensor (RH) terminal C (wiring harness side) and body ground ―  Between rear side radar sensor (RH) terminal D (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the rear side radar sensor (RH) and connector C-70 because the wiring harness is shorted to ground.
		No	Replace the rear side radar sensor (RH) because there is a short to ground in the rear side radar sensor (RH). (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)