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Pacbrake Exhaust Brake Wiring Schematic For:
CUMMINS ISB/ISC c/w two 50 pin connectors at Cummins ECUc/w warm-up option
On Vehicles: (WITH) Allison 1000/2000/2400 series transmission (WITH or WITHOUT*) ABS braking (WITH) on-board air system
Phone: 800-663-0096 • Fax: 604-882-9278 • E-mail: [email protected] • Internet: www.pacbrake.comPacbrake® is a registered trademark of Pacbrake Company. Other trademarks used herein are property of their respective holders. Printed in Canada L5233.021203
NOTE:• *No interface of ABS required on vehicles with Allison 1000/2000/2400 Series transmissions.• Relays shown are de-energized.• Information for this schematic was derived from vehicle systems at the date of this printing. • Updates or variations by vehicle manufacturers constituting changes will not be the responsibility of Pacbrake.• Pacbrake kit includes ECU wire and terminal for pin 34. Pin 42 has a wire installed, cut this wire and connect to ECU side.
Connectto goodchassisground
Park brake disable circuitoptional
IgnitionPower
PacbrakeOn/Off/Warm up switch
Exhaustbrake
Warm-up
Off
87a87
85
86
30
AllisonTCM
J1-20
J1-07
Optionalcustomer-furnished
vehicle interfacewiring connectors J1
(Gre
y)
Wire 120engine brake enable output
Wire 107engine brake preselect request
Ignition power10 amp fuse
10 amp fuse
B
PacbrakeTC relay
Pacbrakerelay
30
87a87 86
85
12 V
A
Pacbrake solenoid
J2 (R
ed)
Cummins*engine connector (A)
Cummins*OEM connector (B)
Connectto pin 34
Connectto pin 42
CUMMINS ECU
Note: Do not use on vehicles equipped with Allison 4th Generation Transmissions, they are identified by one connector at the transmission ECU, consult Pacbrake factory
