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1
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INSPECT ELECTRIC PARKING BRAKE SWITCH CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the negative battery cable.
• Disconnect the electric parking brake switch connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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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 connector, then go to Step 8.
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2
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INSPECT ELECTRIC PARKING BRAKE SWITCH
• Inspect the electric parking brake switch.
• Is the electric parking brake switch normal?
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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 electric parking brake switch, then go to Step 8.
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3
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INSPECT ELECTRIC PARKING BRAKE CONTROL MODULE CONNECTOR CONDITION
• Disconnect the electric parking brake control module connector.
• Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
• Is the connector normal?
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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 connector, then go to Step 8.
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4
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INSPECT ELECTRIC PARKING BRAKE SWITCH CIRCUIT FOR SHORT TO GROUND
• Verify that the electric parking brake switch and electric parking brake control module connectors are disconnected.
• Inspect for continuity between the following terminals (wiring harness-side) and body ground:
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― Electric parking brake switch terminal C
― Electric parking brake switch terminal H
• Is there continuity?
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Yes
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Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Electric parking brake switch terminal C—Electric parking brake control module terminal K
• Electric parking brake switch terminal H—Electric parking brake control module terminal M
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to ground.
Go to Step 8.
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No
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Go to the next step.
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5
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INSPECT ELECTRIC PARKING BRAKE SWITCH CIRCUIT FOR SHORT TO POWER SUPPLY
• Verify that the electric parking brake switch and electric parking brake control module connectors are disconnected.
• Connect the negative battery cable.
• Switch the ignition ON (engine off or on).
• Measure the voltage at the following terminals (wiring harness-side):
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― Electric parking brake switch terminal C
― Electric parking brake switch terminal H
• Is the voltage 0 V?
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Yes
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Go to the next step.
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No
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Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Electric parking brake switch terminal C—Electric parking brake control module terminal K
• Electric parking brake switch terminal H—Electric parking brake control module terminal M
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to power supply.
Go to Step 8.
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6
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INSPECT ELECTRIC PARKING BRAKE SWITCH CIRCUIT FOR OPEN CIRCUIT
• Switch the ignition off.
• Disconnect the negative battery cable.
• Verify that the electric parking brake switch and electric parking brake control module connectors are disconnected.
• Inspect for continuity between the following terminals (wiring harness-side):
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― Electric parking brake switch terminal C—Electric parking brake control module terminal K
― Electric parking brake switch terminal H—Electric parking brake control module terminal M
• 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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Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Electric parking brake switch terminal C—Electric parking brake control module terminal K
• Electric parking brake switch terminal H—Electric parking brake control module terminal M
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has an open circuit.
Go to Step 8.
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7
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INSPECT ELECTRIC PARKING BRAKE SWITCH CIRCUITS FOR SHORT CIRCUIT
• Verify that the electric parking brake switch and electric parking brake control module connectors are disconnected.
• Inspect for continuity between electric parking brake switch terminals C and H (wiring harness-side).
• Is there continuity?
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Yes
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Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
• Electric parking brake switch terminal C—Electric parking brake control module terminal K
• Electric parking brake switch terminal H—Electric parking brake control module terminal M
If there is a common connector:
• Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
• Repair or replace the malfunctioning part.
If there is no common connector:
• Repair or replace the wiring harness which has a short to each other.
Go to the next step.
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No
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Go to the next step.
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8
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Always reconnect all disconnected connectors.
• Connect the negative battery cable.
• Clear the DTC for the electric parking brake control module using the M-MDS.
• Perform the following procedure 3 times or more.
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― Pull up the electric parking brake switch to operate the electric parking brake.
― Press down the electric parking brake switch to release the electric parking brake.
• Retrieve the electric parking brake control module DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the electric parking brake control module.
Go to the next step.
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No
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Go to the next step.
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9
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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