ALTERNATOR GP-CHARGING 1264291 - Caterpillar

Illustration 1 g00532313
Auxiliary hydraulic ECM (1) J1 connector
Illustration 2 g00777829
Location of the auxiliary hydraulic ECM
Illustration 3 g01032468
(2) The Interlock ECM is located on the left side of the machine. (3) The Auxiliary Hydraulic ECM is located on the right side of the machine.The auxiliary hydraulic ECM is located on the right side of the machine beneath the floorplate on Skid Steer Loaders.On Multi Terrain Loaders, the auxiliary hydraulic ECM is located on the front side of the machine beneath the floorplate.Decisions are made by the circuits in the auxiliary hydraulic ECM. Software in the ECM activates the electronic circuits in the appropriate way to correctly operate the machine. Connectors join the harness wiring to the inputs and outputs of the ECM. There is one connector (J1) with 70 contacts. Refer to the table below for contact descriptions.
Table 1
Contact Description    
No.    Function    Type    
1     + Battery     Power    
3     - Battery     Ground    
5 (1)     Solenoid Valve (High flow) (H2)     Driver Output    
5 (2)     Solenoid (Two Speed)     Driver Output    
7     Switch (Continuous Flow)     Switch Input    
9     Switch (Auxiliary Hydraulic Mode)     Switch Input    
11     CAT Data Link -     Input/Output    
13     CAT Data Link +     Input/Output    
18     Indicator (Interlock Override)     Driver Output    
19     Switch (Auxiliary Pressure Release)     Switch Input    
24     Solenoid Valve (Control flow)     Driver Output    
26     Solenoid Valve (Source)     Sourcing Drive Output    
29     Switch (Two Speed)     Switch Input    
31     Switch (Auxiliary Hydraulic Mode)     Switch Input    
40     Solenoid (Auxiliary Hydraulics) (A1)     Driver Output    
42     Solenoid (Auxiliary Hydraulics) (A1 and A2)     Sourcing Drive Output    
45     Switch (Parking Brake)     Switch Input    
47     Switch (Hydraulic Lockout)     Switch Input    
52     Auxiliary Control     Return    
53     Switch (Auxiliary) (A2) or Position Sensor (auxiliary)     Switch Input    
58     Solenoid (Auxiliary Hydraulics) (A2)     Driver Output    
60     + 8 Volt     Supply    
62     Switch (Auxiliary Hydraulics) (A1) (Hydraulic Pressure)     Switch Input    
64     Switch (Interlock Override)     Switch Input    
66     Switch (C+,C- Relay)     Switch Input    
68     Switch (Seat)     Switch Input    
70     Switch (Armrest)     Switch Input    
( 1 ) The contact is used on machines that are equipped with high flow.
( 2 ) The contact is used on machines that are equipped with the two speed function.The ECM monitors the condition of the machine for proper system operation. Components sense the condition of the machine. Components then send electrical signals to the inputs of the ECM. The ECM compares the information from the inputs to the stored information. The ECM then decides if outputs should be activated. The activation is performed by sending electrical signals through the outputs to an electronic circuit.InputsThe switch inputs provide