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 DTC P0183 [MZR-CD (RF Turbo)]

DTC P0183 [MZR-CD (RF Turbo)]


id0102f1819100

DTC P0183

Fuel temperature sensor circuit high input

DETECTION CONDITION

• The PCM monitors the input signal from the fuel temperature sensor. If the voltage from the fuel temperature sensor is more than 4.9 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 50
• Short to power supply in wiring harness between fuel temperature sensor terminal A and PCM terminal 50
• Open circuit in wiring harness between fuel temperature sensor terminal B and PCM terminal 70
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

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".
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 ground.
• Is the voltage more than 4.9 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.
• 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 50 (wiring harness-side)
- Fuel temperature sensor terminal B (wiring harness-side) and PCM terminal 70 (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.
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.