Fuel Pump Control Module

DTC P2534 (Fuel Pump Control Module)

Diagnostic Instructions

- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
- Review Strategy Based Diagnosis for an overview of the diagnostic approach.
- Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P2534
Ignition 1 Switch Circuit Low Voltage

Diagnostic Fault Information






Circuit/System Description

The fuel pump control module monitors the ignition voltage circuit in order to determine if the voltage is within the normal operating range.

Conditions for Running the DTC

Engine is running.

Conditions for Setting the DTC

The FPCM detects that the IGN voltage is less than 6.0 V.

Action Taken When the DTC Sets

DTC P2534 is a Type A DTC.

Conditions for Clearing the DTC

DTC P2534 is a Type A DTC.

Reference Information

Schematic Reference [1][2]Electrical Diagrams

Connector End View Reference
Component Connector End Views

Description and Operation
Fuel System Description Fuel System Description

Electrical Information Reference

- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs

DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference
Control Module References for scan tool information

Circuit/System Testing

1. Verify that DTC P0562 is not set.
2. If DTC P0562 is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.
3. Ignition OFF, disconnect the harness connector of the K27 fuel pump control module.
4. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 21 and ground.
5. If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
6. If all circuits test normal, replace the K27 fuel pump control module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for fuel pump control module replacement, setup, and programming