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Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 147 (INDUSTRIAL)

Frequency Throttle Circuit


Overview

CODE REASON EFFECT
Fault Code: 147
PID: P91
SPN: 091
FMI: 8/8
LAMP: Red
SRT: 

A frequency of less than 100 Hz was detected at frequency throttle signal pin of the actuator harness connector at the ECM.

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 electronic control module (ECM) through the actuator harness and the OEM engine harness. The ECM uses this signal to determine the fueling command.

Component Location

Throttle location varies with each OEM. Use the OEM troubleshooting and repair 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:  26-Oct-2010
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