DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.6) [(US)]
DETERMINING SHORT TO POWER SUPPLY LOCATION (CAN-BUS No.6) [(US)]
SM2566465
id1002x1003900
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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
am3zzw00027517
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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.• Disconnect the negative battery cable before performing any work that requires handling of connectors.
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Step |
Inspection |
Action |
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1
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INSPECT CAN LINE BETWEEN BODY CONTROL MODULE (BCM) AND CONNECTOR C-10 FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Disconnect the connector C-10.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Go to Step 3.
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No
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Go to the next step.
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2
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INSPECT BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY
• 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 2A and 2C.
• Connect the connector C-10.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C (wiring harness side).
• Is the voltage between 1.5—3.5 V?
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Yes
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Replace the body control module (BCM) because there is a short to the power supply in the body control module (BCM).
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No
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Repair or replace the wiring harness between the body control module (BCM) and connector C-10 because the wiring harness is shorted to the power supply.
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3
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INSPECT CAN LINE BETWEEN REAR SIDE RADAR SENSOR (LH) AND CONNECTOR C-10 FOR SHORT TO POWER SUPPLY
• Measure the voltage at rear side radar sensor (LH) terminals C and D.
• Is the voltage between 1.5—3.5 V?
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Yes
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Go to Step 5.
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No
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Go to the next step.
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4
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INSPECT REAR SIDE RADAR SENSOR (LH) FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Connect the connector C-10.
• Disconnect the rear side radar sensor (LH) connector.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Replace the rear side radar sensor (LH) because there is a short to the power supply in the rear side radar sensor (LH).
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No
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Repair or replace the wiring harness between the rear side radar sensor (LH) and connector C-10 because the wiring harness is shorted to the power supply.
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5
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INSPECT CAN LINE BETWEEN FRONT RADAR SENSOR AND CONNECTOR C-10 FOR SHORT TO POWER SUPPLY
• Measure the voltage at front radar sensor terminals E and C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Go to Step 7.
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No
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Go to the next step.
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6
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INSPECT FRONT RADAR SENSOR FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Connect the connector C-10.
• Disconnect the front radar sensor connector.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Replace the front radar sensor because there is a short to the power supply in the front radar sensor.
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No
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Repair or replace the wiring harness between the front radar sensor and connector C-10 because the wiring harness is shorted to the power supply.
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7
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INSPECT CAN LINE BETWEEN CONNECTOR C-10 AND CONNECTOR C-06 FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Disconnect the connector C-06.
• Connect the connector C-10.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Go to the next step.
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No
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Repair or replace the wiring harness between the connector C-10 and connector C-06 because the wiring harness is shorted to the power supply.
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8
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INSPECT CAN LINE BETWEEN CONNECTOR C-06 AND BODY CONTROL MODULE (BCM) FOR SHORT TO POWER SUPPLY
• Switch the ignition off.
• Disconnect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Disconnect the connector 4 which has body control module (BCM) terminals 4N and 4M.
• Connect the connector C-06.
• Connect the negative battery cable. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(US)].)
• Switch the ignition ON (engine off).
• Measure the voltage at body control module (BCM) terminals 2A and 2C.
• Is the voltage between 1.5—3.5 V?
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Yes
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Replace the body control module (BCM) because there is a short to the power supply in the body control module (BCM).
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No
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Repair or replace the wiring harness between the connector C-06 and body control module (BCM) because the wiring harness is shorted to the power supply.
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