DETERMINING SHORT TO GROUND LOCATION (CAN-BUS No.2) [(US)]
DETERMINING SHORT TO GROUND LOCATION (CAN-BUS No.2) [(US)]
SM2566448
id1002x1002200
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Caution
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• 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 [(US)].)
System Wiring Diagram
am3zzw00027505
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Determination Procedure
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Caution
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• When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.• When inspecting the connector, touch it with a paper clip or similar thin pin without directly inserting a tester probe into the terminal.
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Step |
Inspection |
Action |
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1
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INSPECT CAN LINE IN BODY CONTROL MODULE (BCM) FOR SHORT TO GROUND
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)])
• Disconnect the connector 2 which has body control module (BCM) terminals 2H and 2F.
• Inspect for continuity at the following terminals:
• Is there continuity?
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Yes
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Go to the next step.
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No
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Replace the body control module (BCM) because there is a short to ground in the body control module (BCM).
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2
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INSPECT CAN LINE IN DSC HU/CM FOR SHORT TO GROUND
• Disconnect the DSC HU/CM connector.
• Inspect for continuity at the following terminals:
• Is there continuity?
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Yes
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Go to the next step.
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No
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Replace the DSC HU/CM because there is a short to ground in the DSC HU/CM.
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3
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INSPECT CAN LINE IN PCM FOR SHORT TO GROUND
• Disconnect the PCM connector.
• Inspect for continuity at the following terminals:
• Is there continuity?
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Yes
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Repair or replace the wiring harness between the PCM and DSC HU/CM and body control module (BCM) because the wiring harness is shorted to ground.
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No
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Replace the PCM because there is a short to ground in the PCM.
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