Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.

Ignition - On/Vehicle - In Service Mode
Verify there are no DTCs set related to the following component/system:
- B23 Camshaft Position Sensor
- B52 Heated Oxygen Sensor
- B66 Intake Air Temperature Sensor
- B74 Manifold Absolute Pressure Sensor
- B75C Multifunction Intake Air Sensor
- Q12 Evaporative Emission Purge Solenoid Valve
- Q17 Fuel Injector
- Q38 Throttle Body
- Engine Misfire
- Fuel Trim System
- If a related DTC is set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- Go to next step: If a related DTC is not set
Verify the following conditions do not exist:
- Air Cleaner Element - Dirty/Missing/Restricted/Visible Damage/Water intrusion
- Evaporative Emission (EVAP) Purge System - Leaking/Saturated with fuel/Stuck Open/Visible Damage
- Exhaust System - Leaking/Restricted - Refer to: Symptoms - Engine Exhaust
- Fuel - Contaminated/Poor Quality - Refer to: Alcohol/Contaminants-in-Fuel Diagnosis
- Fuel injectors which do not close completely. - Refer to: Fuel Injector Diagnosis
- Fuel pressure that is too low or too high. - Refer to: Fuel System Diagnosis
- Intake Air Duct - Loose/Poor Connection/Visible Damage
- Insufficient amount of fuel in the tank.
- Positive Crankcase Ventilation System - Dirty/Poor Connection/Restricted - Refer to: Crankcase Ventilation System Inspection/Diagnosis
- Throttle Body - Blocked/Dirty/Restricted
- If a condition exists
  Repair or replace as necessary
- Go to next step: If no condition exists
All OK.