P050B

DTC P050A / P050B

Wiring Diagram

Refer to P0122 DTC P0122 / P0123.

Description of Throttle Body System

Refer to Electric Throttle Control System Description Electric Throttle Control System Description.

Description of Air Intake System

Refer to Air Intake System Description Air Intake System Description.

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

NOTE:

- If DTCs other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
- Check that the following conditions are satisfied when using this procedure.

- -10 °C (14 °F) < ECT < 40 °C (104 °F)

- -10 °C (14 °F) < IAT < 40 °C (104 °F)

- BARO > 75 kPa (0.8 kgf/cm2, 10.8 psi, 0.75 bar)


1) Run engine at idle speed for 1 min.

DTC Troubleshooting



1.
Was "Engine Basic Inspection" performed?
YES
Go to Step 2.
NO
Go to Engine Basic Inspection.

2.
Was "Engine and Emission Control System Check" performed?
YES
Go to Step 3.
NO
Go to Engine and Emission Control System Check.

3. DTC check

Is there DTC(s) other than P050A and P050B?
YES
Go to applicable DTC(s).
NO
Go to Step 4.

4. Air intake system check

Check air intake system for clogging and air inhabit.

Is it in good condition?
YES
Go to Step 5.
NO
Repair or replace defective parts.

5. PCV system check

Check PCV system parts or system.
- PCV valve: PCV Valve Inspection
- PCV hose: Testing and Inspection

Are they in good condition?
YES
Go to Step 6.
NO
Repair or replace defective parts.

6. Exhaust system check

Check exhaust system. Testing and Inspection

Is it in good condition?
YES
Go to Step 7.
NO
Repair or replace defective parts.

7. Throttle body assembly check

Check throttle body assembly.
- Throttle actuator: Testing and Inspection
- TP sensor: Testing and Inspection

Are they in good condition?
YES
Go to Step 8.
NO
Replace throttle body assembly.

8. ECT sensor circuit and performance check

1) Check ECT sensor for circuit and performance according to Step 3 and 4 under P0116 DTC P0116 / P0125 / P0128.

Is it in good condition?
YES
Go to Step 9.
NO
Repair or replace defective parts of wire harness.

9. Ignition system check

Check ignition system parts or system.
- Ignition system: Ignition System Check
- Ignition spark: Ignition Spark Test
- Ignition timing: Testing and Inspection

Are they in good condition?
YES
Go to Step 10.
NO
Repair or replace defective parts.

10. EVAP system check

Check EVAP system parts or system. EVAP Canister Purge Inspection

Are they in good condition?
YES
Go to Step 11.
NO
Repair or replace defective parts.

11. Engine mechanical system check

Check engine mechanical parts or system.
- Engine compression: Testing and Inspection
- Engine vacuum: Testing and Inspection
- Valve clearance: Service and Repair
- Valve timing: Timing Chain and Chain Tensioner Removal and Installation

Are they in good condition?
YES
Substitute a known-good ECM and recheck.
NO
Repair or replace defective parts.