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DTC P0183 [MZR-CD (RF Turbo)]

BME010200102258

DTC P0183 | Fuel temperature sensor circuit high input
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DETECTION CONDITION | • The PCM monitors the input signal from the fuel temperature sensor. If the voltage from the fuel temperature sensor is more than 4.92 V, the PCM determines that there is a malfunction in the fuel temperature sensor circuit. Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Fuel temperature sensor malfunction • Connector or terminal malfunction • Open circuit in wiring harness between fuel temperature sensor terminal A and PCM terminal 35 • Short to power supply in wiring harness between fuel temperature sensor terminal A and PCM terminal 35
• Open circuit in wiring harness between fuel temperature sensor terminal B and PCM terminal 91
• PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | Yes | Perform repair or diagnosis according to the available repair information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | VERIFY CURRENT SIGNAL STATUS: IS CONCERN INTERMITTENT OR CONSTANT? • Connect the WDS or equivalent to the DLC-2. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Go to the next step.
No | Intermittent concern exists. Perform the "INTERMITTENT CONCERN TROUBLESHOOTING". (See INTERMITTENT CONCERN TROUBLESHOOTING [MZR-CD (RF Turbo)].)
4 | INSPECT FUEL TEMPERATURE SENSOR CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the fuel temperature sensor connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 9.
No | Go to the next step.
5 | INSPECT FUEL TEMPERATURE SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Turn the engine switch to the ON position (Engine off). • Measure the voltage between fuel temperature sensor terminal A (wiring harness-side) and body GND. • Is the voltage more than 4.92 V? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No | Go to the next step.
6 | INSPECT FUEL TEMPERATURE SENSOR • Inspect the fuel temperature sensor. (See FUEL TEMPERATURE SENSOR INSPECTION [MZR-CD (RF Turbo)].) • Is there any malfunction? | Yes | Replace the fuel temperature sensor, then go to Step 9.
No | Go to the next step.
7 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Turn the engine switch off. • Disconnect the PCM connector. • Inspect for poor connection (such as damaged/pulled-out pins, corrosion). • Is there any malfunction? | Yes | Repair or replace the terminal, then go to Step 9.
No | Go to the next step.
8 | INSPECT FUEL TEMPERATURE SENSOR CIRCUIT FOR OPEN CIRCUIT • Turn the engine switch off. • Inspect for continuity between the following terminals:

  - Fuel temperature sensor terminal A (wiring harness-side) and PCM terminal 35 (wiring harness-side)
  - Fuel temperature sensor terminal B (wiring harness-side) and PCM terminal 91 (wiring harness-side)

• Is there continuity?
Yes
Go to the next step.
No | Repair or replace the wiring harness for a possible open circuit, then go to the next step.
9 | VERIFY TROUBLESHOOTING OF DTC P0183 COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the WDS or equivalent. • Start the engine. • Is the same DTC present? | Yes | Replace the PCM, then go to the next step.
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the Repair Verification Drive Mode. (See OBD DRIVE MODE [MZR-CD (RF Turbo)].) • Are any DTCs present? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [MZR-CD (RF Turbo)].)
No | DTC troubleshooting completed.