DETERMINING SHORT BETWEEN CIRCUITS LOCATION (MS-CAN) [L.H.D.]

id100225001100

Caution

•  Perform the following malfunction diagnosis only when it is diagnosed with a short between circuits by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D.].)

System Wiring Diagram

ac8wzw00003909

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.

Step	Inspection		Action
1	INSPECT BETWEEN CONNECTOR INSTRUMENT CLUSTER AND REAR BODY CONTROL MODULE (RBCM) FOR SHORT BETWEEN CIRCUITS •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect the rear body control module (RBCM). •  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 at DLC-2 terminals L and K the same?	Yes	Go to Step 4.
		No	Go to the next step.
2	INSPECT BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND REAR BODY CONTROL MODULE (RBCM) FOR SHORT BETWEEN CIRCUITS •  Switch the ignition off (LOCK). •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Inspect the continuity between blind spot monitoring (BSM) control module (LH) terminals C and D. •  Is there continuity?	Yes	Go to Step 4.
		No	Replace the rear body control module (RBCM) because there is a short between circuits in the rear body control module (RBCM). (See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.)
3	INSPECT BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND CONNECTOR C-16 FOR SHORT BETWEEN CIRCUITS •  Disconnect connector C-16. •  Inspect the continuity between blind spot monitoring (BSM) control module (LH) terminals C and D. •  Is there continuity?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between the rear body control module (RBCM) and connector C-16 because the wiring harness is shorted between circuits.
4	INSPECT BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) FOR SHORT BETWEEN CIRCUITS •  Disconnect the blind spot monitoring (BSM) control module (LH) connector. •  Inspect for continuity between blind spot monitoring (BSM) control module (LH) terminals C and D (wiring harness side). •  Is there continuity?	Yes	Repair or replace the wiring harness between the blind spot monitoring (BSM) control module (LH) and connector C-16 because the wiring harness is shorted between circuits.
		No	Replace the blind spot monitoring (BSM) control module (LH) because there is a short between circuits in the blind spot monitoring (BSM) control module (LH). (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
5	INSPECT BETWEEN CONNECTOR C-45 AND INSTRUMENT CLUSTER FOR BETWEEN CIRCUITS •  Disconnect the Instrument cluster connector. •  Connect connector C-45. •  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 at DLC-2 terminals L and K the same?	Yes	Go to the next step.
		No	With 360° view monitor control module •  Go to Step 15. Without 360° view monitor control module •  Repair or replace the wiring harness between the rear body control module (RBCM) and connector C-45 because the wiring harness is shorted between circuits.
6	INSPECT BETWEEN CONNECTOR C-14 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS •  Disconnect the Instrument cluster connector. •  Disconnect connector C-64. •  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 at DLC-2 terminals L and K the same?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between connector C-14 and connector C-45 because the wiring harness is shorted between circuits.
7	INSPECT BETWEEN CONNECTOR C-14 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS •  Disconnect the Instrument cluster connector. •  Disconnect connector C-63. •  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 at DLC-2 terminals L and K the same?	Yes	Repair or replace the wiring harness between connector C-63 and DLC-2 because the wiring harness is shorted between circuits.
		No	Go to the next step.
8	INSPECT BETWEEN CONNECTOR C-14 AND CONNECTOR C-63 FOR SHORT BETWEEN CIRCUITS •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Disconnect connector C-14. •  Connect connector C-63. •  Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Switch the ignition ON (engine off). •  Measure the voltage at rear body control module (RBCM) terminals 3E and 3G. •  Is the voltage at rear body control module (RBCM) terminals 3E and 3G the same?	Yes	Repair or replace the wiring harness between connector C-14 and connector C-63 because the wiring harness is shorted between circuits.
		No	Go to the next step.
9	INSPECT BETWEEN CONNECTOR C-63 AND CONNECTOR C-64 FOR SHORT BETWEEN CIRCUITS •  Disconnect connector C-64. •  Connect connector C-63. •  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 at DLC-2 terminals L and K the same?	Yes	Repair or replace the wiring harness between connector C-63 and connector C-64 because the wiring harness is shorted between circuits.
		No	Go to the next step.
10	INSPECT BETWEEN CONNECTOR C-64 AND FRONT CLIMATE CONTROL UNIT FOR SHORT BETWEEN CIRCUITS •  Switch the ignition off (LOCK). •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Inspect for continuity between front climate control unit terminals 1K and 1M. •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 12.
11	INSPECT FRONT CLIMATE CONTROL UNIT FOR SHORT BETWEEN CIRCUITS •  Disconnect the front climate control unit connector. •  Inspect for continuity between front climate control unit terminals 1K and 1M (wiring harness side). •  Is there continuity?	Yes	Repair or replace the wiring harness between the front climate control unit and connector C-64 because the wiring harness is shorted between circuits.
		No	Replace the front climate control unit because there is a short between circuits inside the front climate control unit. (See FRONT CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
12	INSPECT BETWEEN CONNECTOR C-64 AND PARKING ASSIST UNIT FOR SHORT BETWEEN CIRCUITS •  Inspect for continuity between parking assist unit terminals AA and AB. •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 14.
13	INSPECT PARKING ASSIST UNIT FOR SHORT BETWEEN CIRCUITS •  Disconnect the parking assist unit connector. •  Inspect for continuity between parking assist unit terminals AA and AB (wiring harness side). •  Is there continuity?	Yes	Repair or replace the wiring harness between the parking assist unit and connector C-64 because the wiring harness is shorted between circuits.
		No	Replace the parking assist unit because there is a short between circuits in the parking assist unit. (See PARKING ASSIST UNIT REMOVAL/INSTALLATION.)
14	INSPECT INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS •  Disconnect the instrument cluster connector. •  Inspect for continuity between instrument cluster terminals 1C and 1E (wiring harness side). •  Is there continuity?	Yes	Repair or replace the wiring harness between the instrument cluster and connector C-64 because the wiring harness is shorted between circuits.
		No	Replace the instrument cluster because there is a short between circuits in the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
15	INSPECT BETWEEN CONNECTOR C-45 AND 360° VIEW MONITOR CONTROL MODULE FOR SHORT BETWEEN CIRCUITS •  Switch the ignition off (LOCK). •  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) •  Inspect for continuity between 360° view monitor control module terminals AE and AF. •  Is there continuity?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between the rear body control module (RBCM) and connector C-45 because the wiring harness is shorted between circuits.
16	INSPECT 360° VIEW MONITOR CONTROL MODULE FOR SHORT BETWEEN CIRCUITS •  Disconnect the 360° view monitor control module connector. •  Inspect for continuity between 360° view monitor control module terminals AE and AF. (wiring harness side) •  Is there continuity?	Yes	Repair or replace the wiring harness between the 360° view monitor control module and connector C-45 because the wiring harness is shorted between circuits.
		No	Replace the 360° view monitor control module because there is a short to between circuits inside the 360° view monitor control module. (See 360°VIEW MONITOR CONTROL MODULE REMOVAL/INSTALLATION.)