DTC Troubleshooting: P2175 (2.0L Engine): Inspection

Intake Air Duct, Air Cleaner Housing Visual Inspection 

Test Procedure 

• Procedure
• • Check the condition at the connections or for any blockage at the following:

    intake air duct

    Air cleaner housing

• Normal Conditions
• • Conditions at the connections are OK, and there is no blockages.

Results 

• If it is abnormal, there is a problem with the intake air system component (s).

IAT sensor 1 Functional Inspection 

Preconditions 

• Engine is cold condition (ambient temperature)

Test Procedure 

• Procedure
• • Note the ambient temperature.
  • Turn the vehicle to the ON mode.
  • Quickly note the HDS [IAT Sensor (1)].
  • Compare the HDS [IAT Sensor (1)] value to the recorded ambient temperature.

• Normal Conditions
• • The difference between the HDS [IAT Sensor (1)] value and the ambient temperature is less than 5.4 deg.F (3 deg.C)  .

Results 

• If it is abnormal, there is a problem with MAF sensor/IAT sensor 1.

MAF Sensor Functional Inspection 

Test Procedure 

• Procedure

• Start the engine, and let it idle.
• Make sure the following conditions are met:
• • HDS [ECT Sensor 1] above 158 deg.F (70 deg.C)
  • Transmission in P or N
  • All engine and electrical loads turned off
• Monitor the HDS [Engine Speed] and hold the engine speed at 2, 500 rpm for 30 seconds.
• Confirm the HDS [MAF Sensor] while holding the engine speed at 2, 500 rpm.

• Normal Conditions
• • HDS [MAF Sensor] value is between 7.6 g/s and 10.7 g/s 

Results 

• If it is abnormal, there is a problem with MAF sensor/IAT sensor 1.

MAP Sensor Functional Inspection (1) 

Test Procedure 

• Procedure

• Turn the vehicle to the ON mode.
• Compare the HDS [MAP Sensor (Hi Res)] value to the HDS [TC Boost Pressure] value.

• Normal Conditions
• • The difference between the HDS [MAP Sensor (Hi Res)] value and the HDS [TC Boost Pressure] value is less than 26.7 kPa (7.9 inHg, 200 mmHg) 

Results 

• If it is abnormal, there is a problem with MAP sensor.

MAP Sensor Functional Inspection (2) 

Test Procedure 

• Procedure

• Turn the vehicle to the ON mode.
• Note the HDS [MAP Sensor (Hi Res)] value.
• Start the engine, and let it idle.
• Compare the HDS [MAP Sensor (Hi Res)] value with the noted value.

• Normal Conditions
• • The HDS [MAP Sensor (Hi Res)] value changes 0.67 kPa (0.2 inHg, 5 mmHg) or more  from the noted value.

Results 

• If it is abnormal, there is a problem with MAP sensor.

Turbocharger Boost Sensor Functional Inspection (1) 

Test Procedure 

• Procedure

• Turn the vehicle to the ON mode.
• Compare the HDS [TC Boost Pressure] value to the HDS [Baro Sensor] value.

• Normal Conditions
• • The difference between the HDS [TC Boost Pressure] value and the HDS [Baro Sensor] value is less than 26.7 kPa (7.9 inHg, 200 mmHg)  .

Results 

• If it is abnormal, there is a problem with the turbocharger boost sensor.

Turbocharger Boost Sensor Functional Inspection (2) 

Test Procedure 

• Procedure

• Turn the vehicle to the ON mode.
• Note the value of HDS [TC Boost Pressure].
• Start the engine.
• Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
• Hold the engine speed at 4, 500 rpm without load.
• Confirm the HDS [TC Boost Pressure] value with the noted value.

• Normal Conditions
• • The HDS [TC Boost Pressure] value changes 0.67 kPa (0.2 inHg, 5 mmHg) or more  from the noted value.

Results 

• If it is abnormal, there is a problem with the turbocharger boost sensor.

Throttle Body Functional Inspection 

Test Procedure 

• Procedure
• • Do the HDS [ETCS (TAC) TEST].

• Normal Conditions
• • The THROTTLE ACTUATOR CONTROL VALVE indicates normal.

Results 

• If it is abnormal, there is a problem with the throttle body.

Throttle Body Visual Inspection 

Test Procedure 

• Preparation
• • Throttle body inlet hose: disconnected from the throttle body

• Procedure
• • Do the throttle body cleaning - Refer to: Throttle Body Carbon Accumulation Check or Throttle Body Cleaning .
  • Check the throttle valve and bore for dirts, carbons, or damages.

• Normal Conditions
• • There is no dirts, carbons, or damages.

Results 

• If it is abnormal, there is a problem with the throttle body.