Cat ecm, Caterpillar ecm throttle interface module, Remote throttle – Class1 Throttle Interface CAT 105216 User Manual
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DOC 105216_e:\manuals\throttles\cat\New_CAT_Throt.p65-04252000
CAT ECM
Class 1
Caterpillar
Interface
Sensor Common
(Ground)
PTO ON/OFF
Relay
PTO ON Lamp
Caterpillar ECM J1
56 Input #1
PTO On/Off
(Ground)
3 Input Sensor
Common #2
(Sensor Ground)
68 INPUT #8
RAPS PWM
30 Output #1
PTO On Lamp
(Ground)
CAT ECM J1 Connector
OEM
Interlocks
Caterpillar ECM
Throttle Interface Module
1
2
3
4
5
6
7
12
CAT J1/P1 Connector
ECM RIGHT SIDE
Vehicle Harness Connector
ECM Side
87a
87
85
86
30
Programming Considerations
Parameter Suggested
PTO
Remote Throttle
PTO Top Engine Limit
2120 or TEL
PTO RPM set speed
NA
PTO Cab Throttle RPM NA
PTO activates cooling fan Continuous
Torque Limit Rated Torque
Idle PTO vehicle speed limit 1 to 15 MPH
Maximum PTO vehicle speed 100+ MPH
8
9
10
11
13
14
24
32
40
48
23
31
39
47
57
70 69 68 67 66 65 64 63 62 61 60 59 58
12 VDC
Fast Idle
Interlocks
10
1
8
9
5
4
12
A
B
C
Ground
Signal
Source
High Idle
Power
PWM Signal
Ground
13
12
11
10
9
8
7
2
Vehicle Harness Connector
Harness Side
6
5
4
3
1
23
31
39
47
57
14
24
32
40
48
58 59 60 61 62 63 64 65 66 67 68 69 70
35
36
The Caterpillar ECM has two 70 pin AMP Connectors. The J1 connector is for OEM use and
is located on the right side of the ECM toward the rear of the engine. The mating connector is
an AMP 776183-1 and terminals can be AMP 776093-1 for 14, 16 or 18 Gauge wire or Deut-
sch 0462-209-16141 for 14 Ga. and Deutsch 0462-201-16141 for 16 and 18 Ga. wires.
Caterpillar uses a Pulse Width Modulated Control Signal for remote throttle operations. This is
a single wire input to the OEM Input #8, terminal 68. Idle is 10% to 22% duty cycle and Maxi-
mum Throttle is 75% to 90% duty cycle. The Class1 Interface signal is 12% for idle and 87%
for maximum throttle.
The ECM must be programmed for
Remote Throttle
under Dedicated PTO Operations.
Input #1 at terminal 56 is the PTO ON/OFF switch. Supplying Input Sensor Common #2 (ground)
from terminal 3 turns on the Remote Throttle. Output #1 (PTO ON Lamp) at terminal 56 switches
to ground when the PTO ON /OFF switch is enabled.