Circuit/System Testing

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

NOTE:

Circuit/System Verification must be performed before proceeding with Circuit/System Testing.

Verify the following conditions do not exist :
- B75C Multifunction Intake Air Sensor - Contamination of the measuring element/Water intrusion/Cracked/Loose Clamps/Visible Damage
- Q38 Throttle Body - Loose Clamps/Visible Damage
- Air Cleaner Element - Dirty/Restricted
- Catalytic Converter - Blocked/Restricted/Visible Damage
- Intake Air Duct & Intake Manifold - Cracked/Loose Clamps/Restricted/Visible Damage - Refer to : Intake Manifold Cleaning and Inspection
- O-Ring @ B17 Barometric Pressure Sensor/Leaking/Missing/Visible Damage
- O-Ring @ B74 Manifold Absolute Pressure Sensor/Leaking/Missing/Visible Damage
- Positive Crankcase Ventilation System - Leaking/Incorrect connection/Restricted
- Vacuum Hoses - Kinked/Leaking/Incorrect connection/Restricted
- Vacuum leak @ Engine/Intake Manifold/Q38 Throttle Body
- If a condition exists
  Repair or replace as necessary
- Go to next step : If no condition exists
Test or inspect for the following : - An engine mechanical condition
- If a condition exists
  Repair or replace as necessary
- Go to next step : If no condition exists
All OK.