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1
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VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Verify related Service Information availability.
• Is any related Service Information available?
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Yes
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Perform repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, go to the next step.
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No
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Go to the next step.
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2
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INSPECT ELECTRIC AT OIL PUMP CONNECTOR CONDITION
• Switch the ignition off.
• Disconnect the electric AT oil pump connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 7.
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No
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Go to the next step.
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3
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INSPECT TCM CONNECTOR CONDITION
• Disconnect the TCM connector.
• Visually inspect the TCM connector and terminals.
• Is there any malfunction?
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Yes
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Repair or replace the connector and/or terminals, then go to Step 7.
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No
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Go to the next step.
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4
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INSPECT ELECTRIC AT OIL PUMP CIRCUIT FOR SHORT TO GROUND
• Verify that the electric AT oil pump and TCM connectors are disconnected.
• Inspect for continuity between electric AT oil pump terminal B (wiring harness-side) and body ground.
• 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 electric AT oil pump terminal B and TCM terminal N.
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 7.
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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 AT OIL PUMP CIRCUIT FOR SHORT TO POWER SUPPLY
• Verify that the electric AT oil pump and TCM connectors are disconnected.
• Switch the ignition ON (engine on).
• Measure the voltage at the electric AT oil pump terminal B (wiring harness-side).
• 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 electric AT oil pump terminal B and TCM terminal N.
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 7.
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6
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INSPECT ELECTRIC AT OIL PUMP CIRCUIT FOR OPEN CIRCUIT
• Verify that the electric AT oil pump and TCM connectors are disconnected.
• Switch the ignition off.
• Visually inspect the wiring harness between electric AT oil pump terminal B (wiring harness-side) and TCM terminal N (wiring harness-side).
• Is there any malfunction?
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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 electric AT oil pump terminal B and TCM terminal N.
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 the next step.
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No
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Replace the electric AT oil pump, then go to the next step.
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7
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Always reconnect all disconnected connectors.
• Clear the DTC using the M-MDS.
• Perform the following procedure to ensure that the DTC has been resolved:
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1. Operate i-stop for 30 s or more.
2. Repeat Step 1 operation above 2 times.
• Perform the DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
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No
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DTC troubleshooting completed.
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