Circuit/System Verification
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If you were sent here from DTC P0068, P0101, P010B, P0106, P0236, P1101 - Refer to: Circuit/System Testing.
- Ignition - On / Vehicle - In Service Mode
- Verify DTC P0601-P0606, P06A3, P16F3 is not set.
- If any of the DTCs are set
- Go to next step: If none of the DTCs are set
- Verify DTC P0122, P0123, P0222, P0223, P2135, U0606, U0607 is not set.
- If only DTC P0122, P0123, P0222, P0223, P2135 is set
Test or replace the component: Q38 Throttle Body
- If DTC U0606, U0607 and one or more of the DTCs P0122, P0123, P0222, P0223, P2135 is set
Refer to: Circuit/System Testing
- Go to next step: If none of the DTCs are set
- If only DTC P0122, P0123, P0222, P0223, P2135 is set
- Perform the scan tool control function: Throttle Sweep - Start
Verify the scan tool parameter: Throttle Position Sensor & Throttle Position Sensor 2 = Agree
- If not the specified state
Test or replace the component: Q38 Throttle Body
- Go to next step: If the specified state
- If not the specified state
- Verify the scan tool parameter: Throttle Position Sensor = The value should not spike or drop out.
Perform the action while monitoring the parameter:
- Wiggle the harness and connector: Q38 Throttle Body
- Wiggle the harness and connector: K20 Engine Control Module
- If the value spikes or drops out
Repair as necessary - Wiring / Terminal (s) / Electrical Connector (s)
- Go to next step: If the value does not spike or drop out
- 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
- Go to next step: If the DTC does not set
- If the DTC sets
- All OK.