Electrical 579 Family
Peterbilt Motors Company 7-17
Remote Throttle
Remote control of the PTO is performed through the 12-pin remote throttle connector on the engine harness. These are
pins 1, 2, and possibly 6 (depending on engine) on J111_.
The 2010 and 2013 MX engine controller port (J2 pin 21) will report a PTO active when driven high (+12V DC).
Since PTO and pump mode signals are low when active a relay is needed to convert the low signal to a high
signal. When a PTO is specified on a chassis the MX engine harness will contain the optional remote throttle/PTO
12-way connector and cap (P111C/J111C).
TABLE 7-3. MX engine (P111C/J111C)
CECU INPUT FOR REMOTE PTO RESUME
CECU INPUT FOR REMOTE PTO SET
CECU INPUT FOR NAMUX ANALOG RETURN (TWISTED TRIPLE)
CECU INPUT FOR NAMUX PWR SUPPLY +5V (TWISTED TRIPLE)
CECU INPUT FOR REMOTE THROTTLE SENSOR CIRCUIT (TWISTED TRIPLE)
PTO ENGAGED SIGNAL (LOW = ENGAGED)
PUMP MODE ENGAGED SIGNAL (LOW = ENGAGED)
+12V 10A BODY IGN FUSE E_E9
+12V 20A ENG PWR (MX) FUSE E_N9
The 2010 ISX engine controller port (J3 pin 39) and the 2013 ISX engine controller port (J2 pin 94) will report a
PTO active when driven low (Ground). When a PTO is specified on a chassis the ISX engine harness will contain
the optional remote throttle/PTO 12-way connector and cap (P111A/J111A).
TABLE 7-4. ISX Remote Throttle/PTO Connector P111A/J111A:
CC/REMOTE PTO RESUME SWITCH
REMOTE THROTTLE SENSOR CIRCUIT (TWISTED TRIPLE)
SENSOR SUPPLY +5V (TWISTED TRIPLE)
COMMON RTN #3 (SENSOR) (TWISTED TRIPLE)
PTO ENGAGED SIGNAL (LOW = ENGAGED)
+12V 10A BODY IGN FUSE E_E9
