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Electronic Control System ISM and QSM11 Engines – FAULT CODE 147 (Industrial)

Frequency Throttle Circuit


Overview

CODE REASON EFFECT
Fault Code: 147
PID: P091
SPN: 91
FMI: 8/8
LAMP: Red
SRT: 

A frequency of less than 100 Hz has been detected at frequency throttle signal pin 30 of the engine harness.

Calibration-dependent power and speed derate.
Frequency Throttle Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The frequency throttle provides the driver’s throttle command to the ECM through the OEM harness and the engine harness. The ECM uses this signal to determine the fueling command.

Component Location

Throttle location varies with each OEM. Refer to the OEM manual.

Shop Talk

The frequency throttle can either be used in conjunction with a voltage throttle or by itself.

Refer to Troubleshooting Fault Code t05-147

Last Modified:  02-Sep-2010
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