Circuit/System Testing

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

Verify the condition does not exist: Contamination - Emission Reduction Fluid - Refer to: Contaminants-in-Diesel Exhaust Fluid Diagnosis
- If a condition exists
  Repair or replace as necessary
- Go to next step: If no condition exists
Perform the scan tool control function: Reductant System Leak Test
Verify the condition does not exist: Hoses/Lines - Leaking
- If a condition exists
  Repair or replace as necessary
- Go to next step: If no condition exists
Remove the component: Q61 Reductant Injector - Leave the reductant line and the electrical connector connected.
Place the injector into a suitable container.
Perform the scan tool control function: Reductant System Leak Test
Verify the condition does not exist: Reductant Injector - Leaking
- If a condition exists
  Replace the component: Q61 Reductant Injector
- Go to next step: If no condition exists
Perform the scan tool control function: Reductant System Leak Test
Verify the scan tool parameter: Reductant Pressure = 450 to 550 kPa (65 to 80 PSI)
- If not between 450 and 550 kPa (65 and 80 PSI)
  Replace the component: A38 Reductant Pump and Sensor Assembly
- Go to next step: If between 450 and 550 kPa (65 and 80 PSI)
All OK.