Circuit/System Verification

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

Ignition On, verify DTC P0403, P0405, P0406, P046C, P0489, P0490, P049D, P1407, P140D, P140E or P140F 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 EGR Position Sensor percentage parameter responds immediately and remains within 5% of the EGR Valve Commanded State when commanding the EGR valve between 0-100% and back down to 0%, within 30 s, with a scan tool.
NOTE: When using an EGR device control, Engine Reduced Power and Clean Exhaust Filter messages may occur after a short delay when commanding large EGR positions. The messages are a result of ECM protecting hardware during device control mode. No DTCs will be stored and the Diesel Particulate Filter does not need to be service cleaned. Exiting device control will restore normal function.
- The parameters do not respond immediately or do not remain within 5%
  Refer to Circuit/System Testing.
- The parameters respond immediately and remain within 5%
Operate the vehicle within the Conditions for Running the DTCs. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify a DTC does not set.
- If a DTC sets
  Refer to Circuit/System Testing
- If a DTC does not set
All OK.