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Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 544

Top 2 Transmission Circuit – Mechanical System Failure


Overview

CODE REASON EFFECT
Fault Code: 544
PID: S151
SPN: 611
FMI: 7/7
LAMP: Yellow
SRT: 

Autoshift failure; at least three shift attempts were missed.

Top 2 transmission will not be controlled correctly. Transmission remains in manual mode.
Top 2 Transmission Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The Top 2 transmission circuit controls a Top 2 transmission to autoshift between the Top 2 gears.

Component Location

The Top 2 shift/lockout solenoids are on the topside of the transmission, near the back. Use the OEM diagram for the exact location.

Refer to Troubleshooting Fault Code t05-544.

Last Modified:  26-Oct-2010
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