DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.3)


id100200002700

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

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-31 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-31.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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 2L and 2J.
•  Connect the connector C-31.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J (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-31 because the wiring harness is shorted to the power supply.
3
INSPECT CAN LINE BETWEEN FRONT COMBINATION LIGHT (LH) AND CONNECTOR C-31 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at front combination light (LH) terminals D and E.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 5.
No
Go to the next step.
4
INSPECT FRONT COMBINATION LIGHT (LH) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the front combination light (LH) connector.
•  Connect the connector C-31.
•  Connect the connector 2 which has body control module (BCM) terminals 2L and 2J.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the front combination light (LH) because there is a short to the power supply in the front combination light (LH).
No
Repair or replace the wiring harness between the front combination light (LH) and connector C-31 because the wiring harness is shorted to the power supply.
5
INSPECT CAN LINE BETWEEN CONNECTOR C-33 AND CONNECTOR C-31 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-33.
•  Connect the connector C-31.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-33 and connector C-31 because the wiring harness is shorted to the power supply.
6
INSPECT CAN LINE BETWEEN FRONT COMBINATION LIGHT (RH) AND CONNECTOR C-33 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at front combination light (RH) terminals D and E.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 8.
No
Go to the next step.
7
INSPECT FRONT COMBINATION LIGHT (RH) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the front combination light (RH) connector.
•  Connect the connector C-33.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the front combination light (RH) because there is a short to the power supply in the front combination light (RH).
No
Repair or replace the wiring harness between the front combination light (RH) and connector C-33 because the wiring harness is shorted to the power supply.
8
INSPECT CAN LINE BETWEEN CONNECTOR C-04 AND CONNECTOR C-33 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-04.
•  Connect the connector C-33.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-04 and connector C-33 because the wiring harness is shorted to the power supply.
9
INSPECT CAN LINE BETWEEN CONNECTOR C-36 AND CONNECTOR C-04 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-36.
•  Connect the connector C-04.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-36 and connector C-04 because the wiring harness is shorted to the power supply.
10
INSPECT CAN LINE BETWEEN INSTRUMENT CLUSTER AND CONNECTOR C-36 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at instrument cluster terminals AK and AM.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 12.
No
Go to the next step.
11
INSPECT INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the instrument cluster connector.
•  Connect the connector C-36.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the instrument cluster because there is a short to the power supply in the instrument cluster.
No
Repair or replace the wiring harness between the instrument cluster and connector C-36 because the wiring harness is shorted to the power supply.
12
INSPECT CAN LINE BETWEEN CONNECTOR C-36 AND CONNECTOR C-39 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-39.
•  Connect the connector C-36.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-36 and connector C-39 because the wiring harness is shorted to the power supply.
13
INSPECT CAN LINE BETWEEN STEERING LOCK UNIT AND CONNECTOR C-39 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at steering lock unit terminals B and D.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 15.
No
Go to the next step.
14
INSPECT STEERING LOCK UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the steering lock unit connector.
•  Connect the connector C-39.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the steering lock unit because there is a short to the power supply in the steering lock unit.
No
Repair or replace the wiring harness between the steering lock unit and connector C-39 because the wiring harness is shorted to the power supply.
15
INSPECT CAN LINE BETWEEN CLIMATE CONTROL UNIT AND CONNECTOR C-39 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at climate control unit terminals 1K and 1N.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 17.
No
Go to the next step.
16
INSPECT CLIMATE CONTROL UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the climate control unit connector.
•  Connect the connector C-39.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the climate control unit because there is a short to the power supply in the climate control unit.
No
Repair or replace the wiring harness between the climate control unit and connector C-39 because the wiring harness is shorted to the power supply.
17
INSPECT CAN LINE BETWEEN CONNECTOR C-39 AND CONNECTOR C-38 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-38.
•  Connect the connector C-39.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-39 and connector C-38 because the wiring harness is shorted to the power supply.
18
INSPECT CAN LINE BETWEEN STEERING ANGLE SENSOR AND CONNECTOR C-38 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at steering angle sensor terminals B and C.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 20.
No
Go to the next step.
19
INSPECT STEERING ANGLE SENSOR FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the steering angle sensor connector.
•  Connect the connector C-38.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the steering angle sensor because there is a short to the power supply in the steering angle sensor.
No
Repair or replace the wiring harness between the steering angle sensor and connector C-38 because the wiring harness is shorted to the power supply.
20
INSPECT CAN LINE BETWEEN ACTIVE DRIVING DISPLAY AND CONNECTOR C-38 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at active driving display terminals I and G.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 22.
No
Go to the next step.
21
INSPECT ACTIVE DRIVING DISPLAY FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the active driving display connector.
•  Connect the connector C-38.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the active driving display because there is a short to the power supply in the active driving display.
No
Repair or replace the wiring harness between the active driving display and connector C-38 because the wiring harness is shorted to the power supply.
22
INSPECT CAN LINE BETWEEN CONNECTOR C-13 AND CONNECTOR C-38 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-13.
•  Connect the connector C-38.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-38 and connector C-13 because the wiring harness is shorted to the power supply.
23
INSPECT CAN LINE BETWEEN CONNECTOR C-41 AND CONNECTOR C-13 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-41.
•  Connect the connector C-13.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-41 and connector C-13 because the wiring harness is shorted to the power supply.
24
INSPECT CAN LINE BETWEEN DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER'S SIDE) AND CONNECTOR C-41 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at door-electrical supply unit (passenger's side) terminals 1A and 1B.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 27.
No
Go to the next step.
25
INSPECT CAN LINE BETWEEN DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER'S SIDE) AND CONNECTOR C-23 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-23.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at door-electrical supply unit (passenger's side) terminals 1A and 1B.
•  Is the voltage between 1.5—3.5 V?
Yes
Repair or replace the wiring harness between connector C-41 and connector C-23 because the wiring harness is shorted to the power supply.
No
Go to the next step.
26
INSPECT DOOR-ELECTRICAL SUPPLY UNIT (PASSENGER'S SIDE) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the door-electrical supply unit (passenger's side) connector.
•  Connect the connector C-23.
•  Connect the connector C-41.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the door-electrical supply unit (passenger's side) because there is a short to the power supply in the door-electrical supply unit (passenger's side).
No
Repair or replace the wiring harness between the door-electrical supply unit (passenger's side) and connector C-23 because the wiring harness is shorted to the power supply.
27
INSPECT CAN LINE BETWEEN LF CONTROL UNIT AND CONNECTOR C-41 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at LF control unit terminals M and P.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 29.
No
Go to the next step.
28
INSPECT LF CONTROL UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the LF control unit connector.
•  Connect the connector C-41.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the LF control unit because there is a short to the power supply in the LF control unit.
No
Repair or replace the wiring harness between the LF control unit and connector C-41 because the wiring harness is shorted to the power supply.
29
INSPECT CAN LINE BETWEEN CONNECTOR C-41 AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-40.
•  Connect the connector C-41.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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-41 and connector C-40 because the wiring harness is shorted to the power supply.
30
INSPECT CAN LINE BETWEEN DASH-ELECTRICAL SUPPLY UNIT AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at dash-electrical supply unit terminals 1K and 1I.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 32.
No
Go to the next step.
31
INSPECT DASH-ELECTRICAL SUPPLY UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the dash-electrical supply unit connector.
•  Connect the connector C-40.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the dash-electrical supply unit because there is a short to the power supply in the dash-electrical supply unit.
No
Repair or replace the wiring harness between the dash-electrical supply unit and connector C-40 because the wiring harness is shorted to the power supply.
32
INSPECT CAN LINE BETWEEN DOOR-ELECTRICAL SUPPLY UNIT (DRIVER'S SIDE) AND CONNECTOR C-40 FOR SHORT TO POWER SUPPLY
•  Measure the voltage at door-electrical supply unit (driver's side) terminals 1A and 1B.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 35.
No
Go to the next step.
33
INSPECT CAN LINE BETWEEN DOOR-ELECTRICAL SUPPLY UNIT (DRIVER'S SIDE) AND CONNECTOR C-22 FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the connector C-22.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at door-electrical supply unit (driver's side) terminals 1A and 1B.
•  Is the voltage between 1.5—3.5 V?
Yes
Repair or replace the wiring harness between connector C-40 and connector C-22 because the wiring harness is shorted to the power supply.
No
Go to the next step.
34
INSPECT DOOR-ELECTRICAL SUPPLY UNIT (DRIVER'S SIDE) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the door-electrical supply unit (driver's side) connector.
•  Connect the connector C-22.
•  Connect the connector C-40.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the door-electrical supply unit (driver's side) because there is a short to the power supply in the door-electrical supply unit (driver's side).
No
Repair or replace the wiring harness between the door-electrical supply unit (driver's side) and connector C-22 because the wiring harness is shorted to the power supply.
35
INSPECT ELECTRICAL SUPPLY UNIT (ESU) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the electrical supply unit (ESU) connector.
•  Connect the connector C-40.
•  Connect the negative battery terminal.
•  Switch the ignition ON (engine off).
•  Measure the voltage at body control module (BCM) terminals 2L and 2J.
•  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).
No
Repair or replace the wiring harness between the electrical supply unit (ESU) and connector C-40 because the wiring harness is shorted to the power supply.