Diagnostic guide for P0717

Diagnostic Guide for P0717 - Turbine Revolution Sensor Diagnosis

The P0717 code indicates a problem with the turbine revolution sensor, which is crucial for optimal transmission performance. This guide aims to help you diagnose the issue systematically to determine whether the sensor itself, its wiring, or the control module is at fault.

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Difficulty

Intermediate

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Estimated Time

30-60 Minutes

Estimated Diagnostic Cost

$0-$100

Typical shop charge to perform this diagnostic process. Repair parts and labor are not included.

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Tools Needed

OBDII scanner, multimeter, wiring diagram, basic hand tools

Safety Notes

Ensure the vehicle is on a flat surface and the parking brake is engaged. Be cautious of moving parts when the engine is running.

Step 1

Check for Additional Codes

Instruction Use an OBDII scanner to check for any additional trouble codes that may be present.

Expected result A list of trouble codes, including P0717.

If Pass If P0717 is the only code, proceed to the next step. If other codes are present, investigate those first as they may be related.

If Fail If no codes are found, ensure the scanner is functioning properly and the vehicle's OBDII system is operational.

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Coddy can help with this step only. Tell me what you tested or what result you got.

Step 2

Inspect the Turbine Revolution Sensor

Instruction Locate the turbine revolution sensor and visually inspect it for any signs of damage, corrosion, or loose connections.

Expected result The sensor should appear intact with secure connections.

If Pass If the sensor looks good, proceed to test the wiring and connections.

If Fail If damage is found, consider replacing the sensor as a potential solution.

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Step 3

Test the Sensor Voltage

Instruction Using a multimeter, check the voltage at the sensor connector while the ignition is on (engine off).

Expected result You should measure the specified voltage as per the vehicle's service manual.

If Pass If voltage is present, the sensor is likely functioning correctly. Proceed to check the signal output.

If Fail If no voltage is detected, inspect the wiring harness for shorts or opens.

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Step 4

Check Signal Output from the Sensor

Instruction With the engine running, measure the signal output from the turbine revolution sensor using the multimeter.

Expected result You should see a fluctuating voltage signal that corresponds to engine RPM.

If Pass If the signal is present and fluctuating, the sensor is functioning correctly. Check the TCM for faults.

If Fail If the signal is absent or static, the sensor may be faulty or there may be an issue with the wiring.

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Step 5

Inspect Wiring and Connectors

Instruction Examine the wiring and connectors leading to the turbine revolution sensor for any signs of damage, corrosion, or loose connections.

Expected result Wiring should be intact with secure connections.

If Pass If the wiring looks good, the issue may lie within the TCM or ECM.

If Fail Repair or replace any damaged wiring or connectors found during the inspection.

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Step 6

Check TCM/ECM for Faults

Instruction If all previous steps pass, use the OBDII scanner to check for faults in the Transmission Control Module (TCM) or Engine Control Module (ECM).

Expected result No faults should be present in the TCM or ECM related to the turbine revolution sensor.

If Pass If no faults are found, further diagnostics may be needed to assess the TCM or ECM functionality.

If Fail If faults are present, further investigation into the TCM or ECM may be required.

Ask Coddy about this step

Coddy can help with this step only. Tell me what you tested or what result you got.