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DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.6) [(E)]

DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.6) [(E)]


id1002x2003900

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.
•  Disconnect the negative 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-10 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-10.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C.
•  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.
•  Disconnect the connector 2 which has body control module (BCM) terminals 2A and 2C.
•  Connect the connector C-10.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C (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).
No
Repair or replace the wiring harness between the body control module (BCM) and connector C-10 because the wiring harness is shorted to the power supply.
3
INSPECT CAN LINE BETWEEN REAR SIDE RADAR SENSOR (LH) AND CONNECTOR C-10 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at rear side radar sensor (LH) terminals C and D.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 5.
No
Go to the next step.
4
INSPECT REAR SIDE RADAR SENSOR (LH) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Connect the connector C-10.
•  Disconnect the rear side radar sensor (LH) connector.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the rear side radar sensor (LH) because there is a short to the power supply in the rear side radar sensor (LH).
No
Repair or replace the wiring harness between the rear side radar sensor (LH) and connector C-10 because the wiring harness is shorted to the power supply.
5
INSPECT CAN LINE BETWEEN FRONT RADAR SENSOR AND CONNECTOR C-10 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at front radar sensor terminals E and C.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 7.
No
Go to the next step.
6
INSPECT FRONT RADAR SENSOR FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Connect the connector C-10.
•  Disconnect the front radar sensor connector.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the front radar sensor because there is a short to the power supply in the front radar sensor.
No
Repair or replace the wiring harness between the front radar sensor and connector C-10 because the wiring harness is shorted to the power supply.
7
INSPECT CAN LINE BETWEEN CONNECTOR C-10 AND CONNECTOR C-06 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-06.
•  Connect the connector C-10.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C.
•  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-10 and connector C-06 because the wiring harness is shorted to the power supply.
8
INSPECT CAN LINE BETWEEN CONNECTOR C-06 AND BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector 4 which has body control module (BCM) terminals 4N and 4M.
•  Connect the connector C-06.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2A and 2C.
•  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).
No
Repair or replace the wiring harness between the connector C-06 and body control module (BCM) because the wiring harness is shorted to the power supply.