Captiva |
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• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
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Fuel Pump Enable | P0230 | P0230 | P0230 | - |
The engine control module (ECM) provides ignition voltage to the fuel pump flow control module whenever the engine is cranking or running. The control module enables the fuel pump flow control module as long as the engine is cranking or running, and ignition system reference pulses are received. While this enable voltage is being received, the fuel pump flow control module supplies a varying voltage to the in-tank fuel pump module in order to maintain the desired fuel line pressure.
• | The engine speed is greater than 0 RPM. |
• | The ignition voltage is between 11-18 V. |
• | The DTCs run continuously when the conditions above are met. |
• | 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. |
DTC P0230 is a Type B DTC.
DTC P0230 is a Type B DTC.
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
• | Fuel Pump Enable Circuit Low Voltage Test Status |
• | Fuel Pump Enable Circuit Open Test Status |
• | Fuel Pump Enable Circuit High Voltage Test Status |
Each parameter should toggle between OK and Not Run or Not Run and OK. |
⇒ | If greater than the specified value, test for a short to voltage on the enable circuit. If the circuit/connections test normal, replace the K20 ECM. |
⇒ | If less than the specified range, test for a short to ground or an open/high resistance on the enable circuit. If the circuit/connections test normal, replace the K20 ECM. |
⇒ | If not within the specified range, replace the K20 ECM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ECM or fuel pump control module replacement, setup, and programming
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