Component Location
Description
1. General Description

The ECM provides ground to one side of the coil in the fuel pump relay to control the fuel pump relay. The other side of the fuel pump relay coil is connected to fuel pump relay, which activates when the ignition switch is ON. The ECM monitors the control circuit between the fuel pump relay and the ECM. When the ignition switch is turned ON, the ECM energizes the fuel pump relay, which sends power to the fuel pump.

2. DTC Description

ECM sets DTC P0230 if the ECM detects the fuel pump relay control line is open or short to ground or battery line.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● Check open or short circuit to ground or battery line on fuel pump relay control line

● Open or short in harness

● Contact resistance in connectors

● Defective relay

Enable Conditions

● Battery voltage >10V

Threshold Value

● Short to ground, line break or Short to Battery

Diagnostic Time

● 1.5 sec.

Schematic Diagram
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