CONTROL GP-ELECTRONIC 3E5293 - Caterpillar

Illustration 1 g00487533
System Schematic For Spare OutputUsed as a high/low logic circuitThe spare output on the GSC+ is strictly used for the customer. The spare output is programmed to activate under a variety of conditions. The default is set for the output to activate when the engine is in the cooldown (SP11 = 7). The GSC+ treats this diagnostic code as an alarm fault. For more information, see Systems Operation, "Spare Input/Output Programming OP6". The responsibility of documenting any connections to this spare output falls on the customer and/or the dealer. Also, The responsibility of troubleshooting any connections to this spare output falls on the customer and/or the dealer. The voltage on the spare output is approximately 5.0 DCV when the spare output is not active. The voltage is approximately 5.0 DCV when there are no connections to the spare output. When the spare output is active, the voltage on the spare output is approximately 0 volts. The spare output is capable of drawing (sinking) approximately 100 mA.ProcedureThe following condition could be a possible cause of a CID 334 FMI 4.
A short to the ground of the signal for the spare output is present.Troubleshooting of a spare output fault is direct. The FMI defines the diagnostic code. FMI 4 is a short to ground. In order to find the exact cause of the diagnostic code, use the following information: the FMI, the system schematic for the spare output and the documentation that is provided by the dealer and/or the customer