Circuit/System Verification

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

Ignition Off for greater than 8 hours.
NOTE: Determine the ambient temperature by using an accurate thermometer.
Ignition On.
Verify DTC P242C or P242D is not set.
- If any of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle
- If none of the DTCs are set
Verify the scan tool Exhaust Gas Temperature Sensor 2 parameter is within 30°C (54°F) of the ambient temperature.
- If not within 30°C (54°F)
  Replace the B131 Exhaust Gas Temperature sensor 2.
- If within 30°C (54°F)
Ignition Off and all vehicle systems Off, disconnect the harness connector at the Q61 Emission Reduction Fluid Injector. It may take up to 2 minutes for all vehicle systems to power down.
Measure and record the resistance between the terminals of the injector and compare to the measurements to the Temperature Versus Resistance (EGT Sensors) , Temperature Versus Resistance (EGR Temperature Sensors) , Temperature Versus Resistance (Reductant Injector) , Temperature Versus Resistance (Reductant Tank Temperature Sensor) and Temperature Versus Resistance (Engine Coolant Temperature Sensor) chart.
Verify the Q61 Emission Reduction Fluid Injector resistance is within 0.5 Ω of the range specified in the Temperature Versus Resistance (EGT Sensors) , Temperature Versus Resistance (EGR Temperature Sensors) , Temperature Versus Resistance (Reductant Injector) , Temperature Versus Resistance (Reductant Tank Temperature Sensor) and Temperature Versus Resistance (Engine Coolant Temperature Sensor) chart.
- If not within 0.5 Ω
  Replace the Q61 Emission Reduction Fluid Injector.
- If within 0.5 Ω
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify the DTC does not set.
- If the DTC sets
  A condition with the system still exists.
- If the DTC does not set
All OK.