2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1962

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 1962

The control module enables the fuel pump relay when the ignition switch is turned ON. The control module will disable the fuel pump relay within

2 seconds unless the control module detects ignition reference pulses. The control module continues to enable the fuel pump relay as long as

ignition reference pulses are detected. The control module disables the fuel pump relay within 2 seconds if ignition reference pulses cease to be

detected and the ignition remains ON.

The control module monitors the voltage on the fuel pump relay control circuit. If the control module detects an incorrect voltage on the fuel pump

relay control circuit, a fuel pump relay control DTC sets.

Conditions for Running the DTC

* The ignition voltage is between 9-18 volts.

* DTC P0230 runs continuously when the above conditions are met.

Conditions for Setting the DTC

* The control module detects that the commanded state of the driver and the actual state of the control circuit do not match.

* The above condition is met for a minimum of 2.5 seconds.

Action Taken When the DTC Sets

DTC P0230 is a Type B DTC.

Conditions for Clearing the MIL/DTC

DTC P0230 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

J 43244 Relay Puller Pliers

Circuit/System Verification

Important: 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.

* Ignition ON, command the fuel pump relay ON and OFF with a scan tool while observing the following control circuit status parameters:

- Fuel Pump Relay Ckt. Short Gnd Test Status

- Fuel Pump Relay Ckt. Open Test Status

- Fuel Pump Relay Ckt. Short Volts Test Status

* Each parameter should toggle between OK and Not Run or Not Run and OK.

Circuit/System Testing