Class1 Throttle Information Reference - Manual (Page 10)

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CAT Interface
Connector Information
C1 Connector 12015792 Terminal 12089188 Seal 12015899
Position Wire Color Description
A Red Throttle Interlock
B Black Ground
C2 Connector 12015793 Terminal 12089188 Seal 12015899
Position Wire Color Description
A White Throttle ground
B Blue Throttle Signal
C Orange Throttle Source
C3 Connector 12010973 Terminal 12089040 Seal 12015899
Position Wire Color Description
A Yellow PWM Signal
C4 Connector 12015791 Terminal 12089188 Seal 12015899
Position Wire Color Description
A Green Fast Idle*
* This input bypasses idle validation and allows the interface to command engine speed as
soon as power is applied. An external 10K
Ω
potentiometer can be used to set the High Idle
RPM. This can be paralleled with the vernier and a relay used to segregate the signals.
Connector C2 provides the 5 VDC source and ground to the Vernier Control.
Throttle Interface
for
Caterpillar Engines
C1
C2
C3
C4
Caterpillar Engines require a Pulse Width Modulated (PWM) throttle signal. Class1 provides
an interface that performs a conversion from a 0-5 VDC analog signal to a 12%-85% PWM
signal (PN 100924).