DETERMINING SHORT TO POWER SUPPLY LOCATION (MS-CAN) [SKYACTIV-G 1.5 (L.H.D.)]

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Caution
•  Perform the following malfunction diagnosis only when it is diagnosed with a short to the power supply by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-G 1.5 (L.H.D.)].)

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 DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.
•  Disconnect the negative battery cable before performing any work that requires handling of connectors.

Step

Inspection

Action
1
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-36 AND INSTRUMENT CLUSTER
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the connector C-36.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at instrument cluster terminals 1C and 1E.
•  Is the voltage between 1.5—3.5 V?
Yes
Go to Step 3.
No
Go to the next step.
2
INSPECT INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the instrument cluster connector.
•  Connect the connector C-36.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  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.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
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.
3
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTORS C-36 AND DLC-2
•  Measure the voltage at DLC-2 terminals L and K.
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Repair or replace the wiring harness between DLC-2 and connector C-36 because the wiring harness is shorted to the power supply.
4
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-36 AND CONNECTOR C-07
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the connector C-07.
•  Connect the connector C-36.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  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-07 because the wiring harness is shorted to the power supply.
5
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-07 AND CONNECTORS C-48 AND C49
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Connect the connector C-07.
•  Disconnect the connectors C-48 and C-49.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  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-07 and connectors C-48 and C-49 because the wiring harness is shorted to the power supply.
6
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND CONNECTORS C-48 AND C49
•  Measure the voltage at blind spot monitoring (BSM) control module (LH) 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 BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the blind spot monitoring (BSM) control module (LH) connector.
•  Connect the connectors C-48 and C-49.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  Is the voltage between 1.5—3.5 V?
Yes
Replace the blind spot monitoring (BSM) control module (LH) because there is a short to power supply in the blind spot monitoring (BSM) control module (LH).
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
No
Repair or replace the wiring harness between the blind spot monitoring (BSM) control module (LH) and connectors C-48 and C-49 because the wiring harness is shorted to the power supply.
8
INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTORS C-48 AND C-49 AND CONNECTOR C-08
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Connect the connectors C-48 and C-49.
•  Disconnect the connector C-08.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  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-08 and connectors C-48 and C-49 because the wiring harness is shorted to the power supply.
9
INSPECT CLIMATE CONTROL UNIT FOR SHORT TO POWER SUPPLY
•  Switch the ignition off.
•  Disconnect the negative battery cable.
•  Disconnect the climate control unit connector.
•  Connect the connector C-08.
•  Connect the negative battery cable.
•  Switch the ignition ON (engine off).
•  Measure the voltage at DLC-2 terminals L and K.
•  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.
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].)
(See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)
No
Repair or replace the wiring harness between the climate control unit and connector C-08 because the wiring harness is shorted to the power supply.