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Electronic Control System Signature, ISX and QSX15 Engines – FAULT CODE 474

Starter Solenoid Lockout Relay Driver Circuit


Overview

CODE REASON EFFECT
Fault Code: 474
PID: S237
SPN: 1321
FMI: 2/2
LAMP: Yellow
SRT: 

Either low voltage detected when (+) 12 VDC are commanded or voltage detected when no voltage is commanded.

Either the engine will not start or the engine will not have starter lockout protection.
Starter Solenoid Lockout Relay Circuit
SMALL | MEDIUM | LARGE

Circuit Description

The starter solenoid lockout relay driver circuit is a solenoid driven by the electronic control module (ECM) that electrically isolates the starter motor relay when the engine is running.

Component Location

Use the OEM diagram for the exact location.

Refer to Troubleshooting Fault Code t05-474.

Last Modified:  26-Oct-2010
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