TIP-SHORT 6I6601 - Caterpillar

Illustration 1 g01044028
Auxiliary hydraulic ECM (1) J1 connector
Illustration 2 g01044575
Machine harness 70 pin connector for the ECM
Table 1
Contact Description    
Pin    Function    Type    
1     + Battery     Power    
3     - Battery     Ground    
7     Switch (Continuous Flow)     Switch Input    
9     Switch (Quick Coupler) (Enable Signal)     Switch Input    
11     CAT Data Link -     Input/Output    
13     CAT Data Link +     Input/Output    
18     Solenoid Valve (Quick Coupler)     Driver Output    
29     Switch (Quick Coupler) (LOCK)     Switch Input    
31     Switch (Quick Coupler) (UNLOCK)     Switch Input    
40     Modulating Valve (Auxiliary) (No. 1)     Proportional Driver Output    
42     Modulating Valve (Auxiliary) (Supply)     Sourcing Drive Output    
45     Reverse Direction Enable     Switch Input    
52     - 8V Sensor Supply (Return)     Sensor Supply Return    
58     Modulating Valve (Auxiliary) (No. 2)     Driver Output    
60     + 8V Sensor Supply     Sensor Supply    
62     Position Sensor (Auxiliary Control)     PWM Input    
Illustration 3 g01044030
(2) Auxiliary hydraulic ECMThe ECM is located behind the instrument panel on the side operator panel. 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.The ECM monitors the electrical signals from the inputs. 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 the actuators.The CAT® Data Link is used to communicate with the Caterpillar Electronic Technician (ET). The ET is used to monitor the system and aid in any diagnostic problems.