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1
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VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair 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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VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT?
• Start the engine.
• Is the same DTC present?
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Yes
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Go to the next step.
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No
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Intermittent concern exists.
Perform the “INTERMITTENT CONCERN TROUBLESHOOTING”.
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3
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VERIFY CURRENT INPUT SIGNAL STATUS–CIRCUIT MALFUNCTION
• Start the engine.
• Access the ECT PID using the M-MDS.
• Is the ECT PID within 0.19—4.90 V?
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Yes
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Go to Step 13.
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No
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• If the ECT PID is below 0.19 V, go to the next step.
• If the ECT PID is above 4.90 V, go to Step 7.
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4
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INSPECT TERMINAL FOR BENDING
• Turn the engine switch to the off position.
• Disconnect the ECT sensor connector.
• Check for bending of ECT sensor terminals A and B (part-side).
• Are there any concerns?
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Yes
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Repair or replace the terminal, then go to Step 13.
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No
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Go to the next step.
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5
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INSPECT ECT SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn the engine switch to the off position.
• Disconnect the PCM connector.
• Check for continuity between ECT sensor terminal A (wiring harness-side) and body ground.
• Is there continuity?
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Yes
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Repair or replace the shorted wiring harness, then go to Step 13.
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No
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Go to the next step.
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6
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INSPECT ECT SENSOR CIRCUIT FOR SHORT
• Check for continuity between ECT sensor terminals A and B (wiring harness-side).
• Is there continuity?
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Yes
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Repair or replace the shorted wiring harness, then go to step 13.
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No
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Go to Step 13.
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7
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INSPECT ECT SENSOR CONNECTOR FOR POOR CONNECTION
• Turn the engine switch to the off position.
• Disconnect the ECT sensor connector.
• Check for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Are there any concerns?
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Yes
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Repair or replace the terminal, then go to Step 13.
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No
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Go to the next step.
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8
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CLASSIFY ECT SENSOR OR WIRING HARNESS MALFUCNTION
• Connect jumper wire between terminals A and B (wiring harness-side).
• Access the ECT PID using the M-MDS.
• Is the ECT PID approx. 0 V?
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Yes
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Replace the ECT sensor, then go to Step 13.
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No
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Go to the next step.
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9
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INSPECT ECT SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER
• Turn the engine switch to the ON position (Engine off).
• Measure the voltage between ECT sensor terminal A (wiring harness-side) and body ground.
• Is the voltage B+?
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Yes
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Repair or replace the shorted wiring harness, then go to Step 13.
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No
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Go to the next step.
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10
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INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Are there any concerns?
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Yes
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Repair or replace the terminal, then go to Step 13.
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No
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Go to the next step.
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11
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INSPECT ECT SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Check for continuity between ECT sensor terminal A (wiring harness-side) and PCM terminal 1T.
• 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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Repair or replace open wiring harness, then go to Step 13.
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12
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INSPECT ECT SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
• Check for continuity between ECT sensor terminal B (wiring harness-side) and PCM terminal 1B.
• 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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Repair or replace open wiring harness, then go to the next step.
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13
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VERIFY TROUBLESHOOTING OF DTC P0115 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the engine switch to the ON position (Engine off).
• Clear the DTCs from the PCM memory using the M-MDS.
• Start the engine.
• Is the same DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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14
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VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”
• Is there any DTC present?
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Yes
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Go to applicable DTC inspection.
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No
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Troubleshooting completed.
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