Fuel Pump Duty Cycle Output From Pcm (All Others)
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FP DUTY CYCLE COMMAND AND PCM STATUS DESCRIPTION
| FP Duty Cycle Command | PCM Status | Fuel Pump Control Module Actions |
|---|---|---|
| 0-15% | Invalid OFF duty cycle. | The fuel pump control module sends a 20% duty cycle signal on the FPM circuit. The fuel pump is OFF. |
| 37% | Normal low speed operation. | The fuel pump control module operates the fuel pump at the speed requested. The fuel pump control module sends a 60% duty cycle signal on the FPM circuit. |
| 47% | Normal high speed operation. | The fuel pump control module operates the fuel pump at the speed requested. The fuel pump control module sends a 60% duty cycle signal on the FPM circuit. |
| 51-67% | Invalid ON duty cycle. | The fuel pump control module sends a 20% duty cycle signal on the FPM circuit. The fuel pump is OFF. |
| 67-83% | Valid OFF duty cycle. | The fuel pump control module sends a 60% duty cycle signal on the FPM circuit. The fuel pump is OFF. |
| 83-100% | Invalid ON duty cycle. | The fuel pump control module sends a 20% duty cycle signal on the FPM circuit. The fuel pump is OFF. |