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

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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.

Step

Inspection

Action
1
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-46 AND DLC-2
•  Disconnect the negative battery terminal.
•  Disconnect connector C-46.
•  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-46 and DLC-2 because the wiring harness is shorted to ground.
No
Go to the next step.
2
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-46 AND INSTRUMENT CLUSTER
•  Inspect for continuity at the following terminals:
?  Between instrument cluster terminal 1C and body ground
?  Between instrument cluster terminal 1E and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 4.
3
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 1C (wiring harness side) and body ground
?  Between instrument cluster terminal 1E (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between the instrument cluster and connector C-46 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.)
4
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-46 AND FRONT CLIMATE CONTROL UNIT
•  Inspect for continuity at the following terminals:
?  Between front climate control unit terminal 1A(except 2019CY) / 1K(2019CY) and body ground
?  Between front climate control unit terminal 1C(except 2019CY) / 1M(2019CY) and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 6.
5
INSPECT CAN LINE IN FRONT CLIMATE CONTROL UNIT FOR SHORT TO GROUND
•  Disconnect the front climate control unit connector.
•  Inspect for continuity at the following terminals:
?  Between front climate control unit terminal 1A(except 2019CY) / 1K(2019CY) (wiring harness side) and body ground
?  Between front climate control unit terminal 1C(except 2019CY) / 1M(2019CY) (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between the front climate control unit and connector C-46 because the wiring harness is shorted to ground.
No
Replace the front climate control unit because there is a short to ground in the front climate control unit.
(See FRONT CLIMATE CONTROL UNIT REMOVAL/INSTALLATION.)
6
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-46 AND PARKING ASSIST UNIT
•  Inspect for continuity at the following terminals:
?  Between parking assist unit terminal AA and body ground
?  Between parking assist unit terminal AB and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 8.
7
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 AA (wiring harness side) and body ground
?  Between parking assist unit terminal AB (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between parking assist unit and connector C-46 because the wiring harness is shorted to ground.
No
Replace the parking assist unit because there is a short to ground inside the parking assist unit.
(See PARKING ASSIST UNIT REMOVAL/INSTALLATION.)
8
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-46 AND CONNECTOR C-13
•  Disconnect connector C-13.
•  Connect connector C-46.
•  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-46 and connector C-13 because the wiring harness is shorted to ground.
No
Go to the next step.
9
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-13 AND REAR BODY CONTROL MODULE (RBCM)
•  Disconnect the rear body control module (RBCM) connector.
•  Connect connector C-13.
•  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
Go to the next step.
No
Go to Step 12.
10
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-20 AND REAR MOUNT CAMERA
•  Disconnect connector C-20.
•  Inspect for continuity at the following terminals:
?  Between rear mount camera terminal G and body ground
?  Between rear mount camera terminal H and body ground
•  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-13 and connector C-20 because the wiring harness is shorted to ground.
11
INSPECT CAN LINE IN REAR MOUNT CAMERA FOR SHORT TO GROUND
•  Disconnect the rear mount camera connector.
•  Inspect for continuity at the following terminals:
?  Between rear mount camera terminal G (wiring harness side) and body ground
?  Between rear mount camera terminal H (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between rear mount camera and connector C-20 because the wiring harness is shorted to ground.
No
Replace the rear mount camera because there is a short to ground inside the rear mount camera.
(See REAR MOUNT CAMERA REMOVAL/INSTALLATION.)
12
INSPECT FOR SHORT TO GROUND BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND REAR BODY CONTROL MODULE (RBCM)
•  Inspect for continuity at the following terminals:
?  Between rear body control module (RBCM) terminal 4I (wiring harness side) and body ground
?  Between rear body control module (RBCM) terminal 4L (wiring harness side) and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Replace the rear body control module (RBCM) because there is a short to ground in the rear body control module (RBCM).
(See REAR BODY CONTROL MODULE (RBCM) REMOVAL/INSTALLATION.)
13
INSPECT FOR SHORT TO GROUND BETWEEN BLIND SPOT MONITORING (BSM) CONTROL MODULE (LH) AND CONNECTOR C-24
•  Disconnect connector C-24.
•  Inspect for continuity at the following terminals:
?  Between blind spot monitoring (BSM) control module (LH) terminal C and body ground
?  Between blind spot monitoring (BSM) control module (LH) terminal D and body ground
•  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-24 because the wiring harness is shorted to ground.
14
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 C (wiring harness side) and body ground
?  Between blind spot monitoring (BSM) control module (LH) terminal D (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-24 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.)