Circuit/System Testing

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

Engine - Running
Verify the scan tool parameter: MAP Sensor = 19 to 42 kPa (2.7 to 6 PSI)
- If not in the specified range
  Refer to DTC P0106, P0107, or P0108
- Go to next step: If in the specified range
Ignition Off
Verify the following conditions do not exist:
- Exhaust System - Leaking / Missing components / Restricted - Refer to Symptoms - Engine Exhaust
- Fuel - Contaminated / Poor Quality - Refer to Alcohol/Contaminants-in-Fuel Diagnosis
- Fuel Injectors - Restricted - Refer to Fuel Injector Diagnosis
- Ignition System = Malfunction - Refer to Electronic Ignition System Diagnosis
- Intake Air Duct - Loose Clamps/Cracked/Visible Damage
- Intake Manifold - Leaking
- Mass Airflow Sensor - Contamination of the measuring element/Water intrusion
- Mechanical Condition @ Engine - Altered air flow
  For example:
  - Cylinder Head @ Intake Port or Exhaust Port - Restrictions/Casting Flash
  - Intake Manifold - Restrictions/Casting Flash/Vacuum leak
  - Intake Valve or Exhaust Valve - Stuck/Leaking
  - Lock Pin @ Valve Rocker Switching Arm - Broken/Stuck
  - Valve Rocker Switching Arm - Binding or Sticking/Mechanically stuck/Visible Damage/Worn
- Positive Crankcase Ventilation System - Incorrect Connection / Leaking / Restricted - Refer to Crankcase Ventilation System Inspection/Diagnosis
- Vacuum Hoses - Incorrect Connection / Connection / Leaking / Restricted
- If a condition exists - Repair or replace as necessary
- Go to next step: If no condition exists
Refer to Symptoms - Engine Mechanical