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

id100225001000

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 [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 terminal before performing any work that requires handling of connectors.

Note

•  If the ignition does not turn on even if the ignition is switched ON, switch the ignition ON referring to the forced ignition ON procedure. (See FORCED IGNITION ON.)

Step	Inspection		Action
1	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-40 AND INSTRUMENT CLUSTER •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connector C-40. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  Measure the voltage at instrument cluster terminals C and E. •  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 terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the instrument cluster connector. •  Connect the connector C-40. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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-40 because the wiring harness is shorted to the power supply.
3	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-40 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-40 because the wiring harness is shorted to the power supply.
4	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-40 AND CONNECTOR C-14 •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connector C-14. •  Connect the connector C-40. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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-40 and connector C-14 because the wiring harness is shorted to the power supply.
5	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-14 AND CLIMATE CONTROL UNIT •  Measure the voltage at climate control unit terminals D and B. •  Is the voltage between 1.5—3.5 V?	Yes	Go to the next step.
		No	Go to Step 11.
6	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN CONNECTOR C-14 AND CONNECTORS C-51,C-52 •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connectors C-51,C-52. •  Connect the connector C-14. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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-14 and connectors C-51,C-52 because the wiring harness is shorted to the power supply.
7	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN PARKING ASSIST UNIT AND CONNECTORS C-51,C-52 •  Measure the voltage at parking assist unit terminals AB and AA. •  Is the voltage between 1.5—3.5 V?	Yes	Go to Step 9.
		No	Go to the next step.
8	INSPECT PARKING ASSIST UNIT FOR SHORT TO POWER SUPPLY •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the parking assist unit connector. •  Connect the connectors C-51,C-52. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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 parking assist unit because there is a short to power supply in the parking assist unit. (See PARKING ASSIST UNIT REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between the parking assist unit and connectors C-51,C-52 because the wiring harness is shorted to the power supply.
9	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND CONNECTOR C-26 •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the connector C-26. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  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	Repair or replace the wiring harness between the connector C-14 and connectors C-51,C-52 and connector C-26 because the wiring harness is shorted to the power supply.
		No	Go to the next step.
10	INSPECT BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) FOR SHORT TO POWER SUPPLY •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the blind spot monitoring (BSM) control module (LH) connector. •  Connect the connector C-26. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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 connector C-26 because the wiring harness is shorted to the power supply.
11	INSPECT CLIMATE CONTROL UNIT FOR SHORT TO POWER SUPPLY •  Switch the ignition off. •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the climate control unit connector. •  Connect the connector C-14. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  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-14 because the wiring harness is shorted to the power supply.