Diagnostic Instructions
DTC Descriptor
DTC P069E 00: Fuel Pump Control Module (FPCM) Requested MIL Illumination
Circuit/System Description
The fuel pump control module (FPCM) controls and monitors the operation of the fuel system. When the FPCM detects a fault and sets a DTC, the FPCM sends a GMLAN serial data message to the engine control module (ECM) requesting the illumination of the malfunction
indicator lamp (MIL). This DTC sets in the ECM when it receives a MIL request message from the FPCM.
Conditions for Running the DTC
The ignition is in crank, or the engine is running.
Conditions for Setting the DTC
The FPCM detects a fuel system related fault and sets a DTC.
Action Taken When the DTC Sets
| • | The ECM stores the DTC information into memory when this diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will illuminate. |
| • | The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records. |
Conditions for Clearing the DTC
| • | A last test failed, or the current DTC, clears when the diagnostic runs and does not fail. |
| • | A history DTC clears after 100 consecutive warm-up cycles, if failures are not reported by this or any other emission related diagnostic. |
Diagnostic Aids
| • | Verify that the FPCM has good power and ground. |
| • | Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine
how many ignition cycles that the diagnostic test reported a pass and/or a fail. |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Engine Controls Connector End Views
Description and Operation
Fuel System Description
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
Verify that DTCs P0191, P0192, P0193, P0231, P0232, P023F, P025A, P0601, P0602, P0603, P0604, P0606, P062F, P0641, P064A, P06A6, P1255, P2534, or P2635 are not set in the FPCM.
