ENGINE AR 7C7804 - Caterpillar

Table 3
Chassis ECM Connector J1 (MID 87)
Contact Descriptions(1)
No. Function
1 Key Switch (Key In On Position)
3 Front Left Wheel Speed Sensor (-)
5 Front Right Wheel Speed Sensor (-)
7 Center Left Wheel Speed Sensor (-)
9 Center Right Wheel Speed Sensor (-)
10 Cat Data Link (+)
13 Battery (-)
16 Rear Left Wheel Speed Sensor (-)
18 Rear Right Wheel Speed Sensor (-)
20 Cat Data Link (-)
23 Battery (-)
25 Differential Lock Foot Switch
27 ECM Location 1 (Ground)
28 ECM Location 2 (Open)
29 Brake Oil Temperature Sensor
31 Battery + (24 VDC)
32 ECM Location Enable (Ground)
34 Fluid Level Sensor
38 Battery + (24 VDC)
39 Battery + (24 VDC)
46 Battery + (24 VDC)
47 Battery + (24 VDC)
48 Center Cross Axle Lock Solenoid
49 Rear Cross Axle Lock Solenoid
50 Prop Drivers 1-4 Solenoid Return
51 IAD Lock Solenoid
52 Electric/Hydraulic Retarding Solenoid 1
54 Two Wire Prop Driver Return (11 - 12)
56 +10 VDC Return
57 Battery (-)
58 Electric/Hydraulic Retarding Solenoid 2
63 Cross Axle Lock Switch
67 Front Cross Axle Differential Solenoid
69 +10 VDC Sensor Supply
70 Battery (-)
(1) Contacts not listed are not used.
Table 4
Chassis ECM Connector J2 (MID 87)
Contact Descriptions(1)
No. Function
2 Payload Light - Red
4 ON/OFF Driver Return
5 Payload Light - Yellow
6 Payload Light - Green
63 Ground
64 CAN B Data Link High (+)
65 CAN B Data Link Low (-)
67 CAN A High (+) - J1939
68 CAN A Low (-) - J1939
(1) Contacts not listed are not used.