Circuit/System Testing

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

Engine - Idling - At normal operating temperature
Verify the scan tool parameter: Mass Airflow Sensor = 5 to 40 g/s
- If less than 5 g/s
  Verify the following conditions do not exist:
1. Induction System - Leaking/Restricted - Refer to: Component/System Leak Test
  - If a condition exists
    Repair or replace as necessary
  - If no condition exists
    Perform the scan tool function: Particulate Filter Service Regeneration
- If greater than 40 g/s
  Verify the following conditions do not exist:
1. Induction System - Leaking - Refer to: Component/System Leak Test
  - If a condition exists
    Repair or replace as necessary
  - Go to next step: If no condition exists
    Go to next step: Refer to step 3
- Go to next step: If between 5 and 40 g/s
Ignition/Vehicle - Off
Verify a condition does not exist with the component:
- Exhaust System - LeakingRefer to: Symptoms - Engine Exhaust
- If a condition exists
  Repair or replace as necessary
- Go to next step: If no condition exists
Perform the following procedure/test: Cylinder Power Balance Test
- If the procedure/test does not pass
  Repair as necessary
- Go to next step: If the procedure/test passes
Replace the component: B195A Nitrogen Oxides Sensor 1