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

id100225000900

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 [L.H.D.].)

System Wiring Diagram

amxzzw00005622

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.

Step	Inspection		Action
1	INSPECT FOR SHORT TO GROUND 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. •  Inspect for continuity at the following terminals: ―  Between instrument cluster terminal C and body ground ―  Between instrument cluster terminal E and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 3.
2	INSPECT CAN LINE IN INSTRUMENT CLUSTER FOR SHORT TO GROUND •  Disconnect the instrument cluster connector. •  Inspect for continuity at the following terminals: ―  Between instrument cluster terminal C (wiring harness side) and body ground ―  Between instrument cluster terminal E (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the instrument cluster and connector C-40 because the wiring harness is shorted to ground.
		No	Replace the instrument cluster because there is a short to ground in the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
3	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-40 AND DLC-2 •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminal L and body ground ―  Between DLC-2 terminal K and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between connector C-40 and DLC-2 because the wiring harness is shorted to ground.
		No	Go to the next step.
4	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-40 AND CONNECTOR C-14 •  Connect the connector C-40. •  Disconnect the connector C-14. •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminal L and body ground ―  Between DLC-2 terminal K and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between connector C-40 and connector C-14 because the wiring harness is shorted to ground.
		No	Go to the next step.
5	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-14 AND CLIMATE CONTROL UNIT •  Inspect for continuity at the following terminals: ―  Between climate control unit terminal D and body ground ―  Between climate control unit terminal B and body ground •  Is there continuity?	Yes	Go to Step 11.
		No	Go to the next step.
6	INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-14 AND CONNECTORS C-51,C-52 •  Disconnect the connectors C-51,C-52. •  Connect the connector C-14. •  Inspect for continuity at the following terminals: ―  Between DLC-2 terminal L and body ground ―  Between DLC-2 terminal K and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between connector C-14 and connectors C-51,C-52 because the wiring harness is shorted to ground.
		No	Go to the next step.
7	INSPECT FOR SHORT TO GROUND BETWEEN PARKING ASSIST UNIT AND CONNECTORS C-51,C-52 •  Inspect for continuity at the following terminals: ―  Between parking assist unit terminal AB and body ground ―  Between parking assist unit terminal AA and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Go to Step 9.
8	INSPECT CAN LINE IN PARKING ASSIST UNIT FOR SHORT TO GROUND •  Disconnect the parking assist unit connector. •  Inspect for continuity at the following terminals: ―   Between parking assist unit terminal AB (wiring harness side) and body ground ―   Between parking assist unit terminal AA (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the parking assist unit and connectors C-51,C-52 because the wiring harness is shorted to ground.
		No	Replace the parking assist unit because there is a short to ground in the parking assist unit. (See PARKING ASSIST UNIT REMOVAL/INSTALLATION.)
9	INSPECT FOR SHORT TO GROUND BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND CONNECTOR C-26 •  Disconnect the connector C-26. •  Inspect for continuity at the following terminals: ―  Between blind spot monitoring (BSM) control module (LH) terminal D and body ground ―  Between blind spot monitoring (BSM) control module (LH) terminal E and body ground •  Is there continuity?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between connector C-14 and connectors C-51,C-52 and connector C-26 because the wiring harness is shorted to ground.
10	INSPECT CAN LINE IN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) FOR SHORT TO GROUND •  Disconnect the blind spot monitoring (BSM) control module (LH) connector. •  Inspect for continuity at the following terminals: ―   Between blind spot monitoring (BSM) control module (LH) terminal D (wiring harness side) and body ground ―   Between blind spot monitoring (BSM) control module (LH) terminal E (wiring harness side) and body ground •  Is there continuity?	Yes	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 ground.
		No	Replace the blind spot monitoring (BSM) control module (LH) because there is a short to ground in the blind spot monitoring (BSM) control module (LH). (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
11	INSPECT CAN LINE IN CLIMATE CONTROL UNIT FOR SHORT TO GROUND •  Disconnect the climate control unit connector. •  Inspect for continuity at the following terminals: ―  Between climate control unit terminal D (wiring harness side) and body ground ―  Between climate control unit terminal B (wiring harness side) and body ground •  Is there continuity?	Yes	Repair or replace the wiring harness between the climate control unit and connector C-14 because the wiring harness is shorted to ground.
		No	Replace the climate control unit because there is a short to ground in the climate control unit. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].)