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Home >> Cadillac >> 2018 >> Escalade Base, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Engine Controls And Fuel - 6.0L (L96) - DTC P0351 To DTC P2636 And Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> DTC P2632, P2633, P2634: Fuel Transfer Pump Relay Control Circuit >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: An open or a short to voltage in the control circuit will cause both the Ckt. Open Test Status and the Ckt. Short Volts Test Status parameters to display Fault.
  1. Ignition ON.
  2. Verify the parameters listed below do not display Malfunction while commanding the Fuel Pump 2 Relay ON and OFF with a scan tool:
    • Fuel Pump 2 Relay Control Circuit High Voltage Test Status
    • Fuel Pump 2 Relay Control Circuit Open Test Status
    • Fuel Pump 2 Relay Control Circuit Low Voltage Test Status
    • If Malfunction is displayed 

      Refer to Circuit/System Testing below.

    • Go to next step: If Malfunction is not displayed 
  3. 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.
  4. Verify DTC P2632, P2633 or P2634 does not set.
    • If DTC P2632, P2633, or P2634 sets 

      Refer to Circuit/System Testing below.

    • Go to next step: If DTC P2632, P2633, or P2634 does not set 
  5. All OK.
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