HOSE AS 3843730 - Caterpillar

Reference: For more information on the CAT Data Link, refer to the Service Manual module Systems Operation, "CAT Data Link" for the machine that is being serviced.Reference: For more information on the Caterpillar Monitoring System, refer to the Service Manual module Systems Operation, "Caterpillar Monitoring System" for the machine that is being serviced.Reference: For more information on troubleshooting the power train ECM, refer to the Service Manual module Testing and Adjusting for the machine that is being serviced.
Table 2
40-Pin Connector J1
Connector Pin(1) Function
1 + 24 Volt ECM (Electronic Control Module) Supply (Key ON)
2 Ground
3 CAT Data Link −
5 Ground
6 + 24 Volt ECM (Electronic Control Module) Supply (Key ON)
7 Solenoid Return
8 Start Relay
9 CAT Data Link +
10(2) Autolube Solenoid
11 Number 2 Clutch Solenoid (Forward)
12(3) Autoshift Indicator Lamp
13 Direction Switch (Neutral)
14 Direction Switch (Reverse)
15 Torque Converter Output Speed Return
16 Switch and Sensor Ground
17 Number 1 Clutch Solenoid (Reverse)
18 Ride Control Solenoid
19 Upshift Switch (N.C.)
20 Steering and Transmission Lock Switch 1 (N.O.)
21 Ride Control Switch 1 (N/C)
22 Ride Control Switch 2 (N/O)
23 Upshift Switch (N.O.)
24 Steering and Transmission Lock Switch 2 (N.C.)
25 Downshift Switch 1 (N.C.)
26 Downshift Switch 2 (N.O.)
27 Reduced Rimpull Switch 3
28(2) Manual Lube Switch
29 Grease Level Switch
30 Direction Switch (Forward)
32 Torque Converter Lockup Switch
33(3) Auto/Manual Switch (Auto 4)
34 Reduced/Maximum Rimpull ON/OFF Switch
35(3) Auto/Manual Switch (Auto 3)
36 Reduced Rimpull Switch 4
37 Parking Brake Pressure Switch 1 (N.C.)
38(3) Auto/Manual Switch (Auto 2)
39 Parking Brake Pressure Switch 2 (N.O.)
40 Key Start Switch To Battery +
(1) The connector contacts that are not listed are not used.
(2) 836H Landfill Compactor only
(3) 834H Wheel Dozeronly
Table 3
40-Pin Connector J2
Connector Pin(1) Function
1 Number 4 Clutch Solenoid
Third Speed
2 Number 6 Clutch Solenoid
First Speed
3 Solenoid Return
4 Left Pedal Sensor
5(2) Grease Pressure Sensor
6 Reduced Rimpull Switch 1
7 Number 3 Clutch Solenoid
Fourth Speed
8 Number 5 Clutch Solenoid
Second Speed
9 Sensor Power Supply +10V
10 Reduced Rimpull Switch 2
11 Impeller Clutch Pressure Sensor
12 Sensor Power Supply +8V
13 Lockup Clutch Solenoid
14 Transmission Output Speed 1 −
18 Oil Temperature Sensor
19 Impeller Clutch Solenoid
20 Transmission Output Speed 1+
23 Engine Speed −
25 Transmission Output Speed 2+
29 Engine Speed +
31 Transmission Output Speed 2−
37 Backup Alarm
38 Torque Converter Output Speed Sensor
(1) The connector contacts that are not listed are not used.
(2) 834H Wheel Dozeronly