VALVE AS-CONTROL 2722856 - Caterpillar

Table 1
Service Tools    
Part Number    Part    
    Caterpillar® Electronic Technician (Cat® ET)    
6V-7070
9U-7330     Digital Multimeter    
8T-3224     Needle Tip Group    
7X-1710     Multimeter Probe Group    
8T-8726     Adapter Cable Assembly    
4C-8195     Control Service Tool (Switch Box)    
157-4829     Cable Adapter    
Illustration 1 g02615483
Components needed to connect to Cat ET (1) Current version of Cat ET software and an IBM-COMPATIBLE personal computer (2) 317-7484 Communication Adapter Gp (3) Service diagnostic cable (4) CableReferenceSee Tool Operating Manual, NEHS1032, "317-7484 Communications Adapter 3".Cat ET is a software program that can be used on an IBM compatible personal computer. To use Cat ET, order the following materials:
7X-1425 Data Link Cable and the Data Subscription
Special Publication, JEHP1026, "Information and Requirements Sheet"
Special Publication, JERD2124, "ET Single Use Program License"
Special Publication, JERD2142, "Data Subscription"Cat ET is not required to determine or clear diagnostic codes. However, the process of determining the diagnostic codes is easier with Cat ET. Cat ET can also display information on the history and parameter status of diagnostic codes. These features allow Cat ET to be a useful troubleshooting tool.Cat ET is used to communicate with the electronic control module (ECM) over a data link by connecting to the diagnostic connector.ReferenceFor more information and for the locations of the connectors, see the following:
Troubleshooting, "Electrical Components and Connector Locations"
Machine Electrical SchematicUse a calibrated digital multimeter for measuring resistance or voltage. ReferenceFor instructions about the use of the 6V-7070 Digital Multimeter , see Special Instruction, SEHS7734.The 7X-1710 Multimeter Probe is used to measure the voltage at the connectors without disconnecting the connectors. The probe cables are pushed into the back of the connector along the wire. The 8T-8726 Adapter Cable has a breakout with three pins. The adapter cable is used for measurements in the sensor circuits.Note: Except for harness tests, using continuity testers such as the following is not recommended:
8T-0500 Continuity Tester
5P-7277 Voltage Tester