Circuit/System Verification

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

NOTE: Reductant Heater parameters are in the GPCM data list.

Ignition On.
Verify DTC P205C, P20B9, P20BB, P20BC or P20C0 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 GPCM parameters listed below do not display Malfunction:
- Reductant Heater 1, 2 or 3 Control Circuit High Voltage Test Status
- Reductant Heater 1, 2 or 3 Control Circuit Open Test Status
- Reductant Heater 1, 2 or 3 Control Circuit Low Voltage Test Status
  - If Malfunction is displayed
    Refer to Circuit/System Testing.
  - If Malfunction is not displayed
Verify the scan tool GPCM parameters listed below are between 5-7 Amps for heater 1, 2.5-4.5 Amps for heater 2 and 1.5-3.5 Amps for heater 3 when commanding On and Off with a scan tool.
- Reductant Heater 1 Current
- Reductant Heater 2 Current
- Reductant Heater 3 Current
- If not within the specified range
  Refer to Circuit/System Testing
- If within the specified range
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
  Refer to Circuit/System Testing.
- If the DTC does not set
All OK.