HWH 2000 Operator's Manual

R

H

CORPORATION

W

H

OPERATOR’S MANUAL

R

HWH COMPUTER-CONTROLLED

2000 SERIES LEVELING SYSTEM

FEATURING:

Touch Panel Leveling Control

Air Leveling (With Tag Axle)

HWH COMPUTERIZED LEVELING

EXCESS

AIR

TRAVEL

MODE

DUMP

EMERGENCY

STOP

RAISE

UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES

SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.

2096 Moscow Road | Moscow, Iowa 52760

Ph: 800/321-3494 (or) 563/724-3396 | Fax: [phone]

SLOPE

NOT IN
PARK/
BRAKE

TRAVEL

MODE

CAUTION!

HWH CORPORATION

(On I-80, Exit 267 South)

www.hwh.com

AP25488

ML25489/MP05.998H

08SEP03

OPERATOR’S MANUAL

CAUTION !

READ THE ENTIRE OPERATOR’S MANUAL BEFORE OPERATING.

BLOCK FRAME AND TIRES SECURELY BEFORE CRAWLING UNDER VEHICLE. DO NOT USE LEVELING JACKS OR AIR
SUSPENSION TO SUPPORT VEHICLE WHILE UNDER VEHICLE OR CHANGING TIRES. VEHICLE MAY DROP AND/OR
MOVE FORWARD OR BACKWARD WITHOUT WARNING CAUSING INJURY OR DEATH.

KEEP ALL PEOPLE CLEAR OF VEHICLE WHILE LEVELING SYSTEM AND ROOM EXTENSION ARE BEING OPERATED.

NEVER PLACE HANDS OR OTHER PARTS OF THE BODY NEAR HYDRAULIC LEAKS. OIL MAY PENETRATE SKIN
CAUSING INJURY OR DEATH.

DO NOT OPERATE THE LEVELING SYSTEM OR USE THE DUMP OR RAISE BUTTONS IF THE VEHICLE IS MOVING
IN EXCESS OF 5 MPH.

WEAR SAFETY GLASSES WHEN INSPECTING OR SERVICING THE SYSTEM TO PROTECT EYES FROM DIRT, METAL
CHIPS, OIL LEAKS, ETC. FOLLOW ALL OTHER APPLICABLE SHOP SAFETY PRACTICES.

IMPORTANT: IF COACH IS EQUIPPED WITH A ROOM EXTENSION, READ ROOM EXTENSION SECTION BEFORE
OPERATING LEVELING SYSTEM.

HOW TO OBTAIN WARRANTY SERVICE

THIS IS NOT TO BE INTERPRETED AS A STATEMENT OF WARRANTY

HWH CORPORATION strives to maintain the highest level of

customer satisfaction. Therefore, if you discover a defect or

problem, please do the following:

FIRST:

vehicle or had the leveling system installed. Dealership
management people are in the best position to resolve
the problem quickly. If the dealer has difficulty solving
the problem, he should immediately contact the Customer
Service Department, at HWH CORPORATION.

SECOND:

notify the Customer Service Department:
HWH CORPORATION 2096 Moscow Rd. Moscow IA. 52760
[phone] OR [phone]. Give your name and
address, coach manufacturer and model year, date the
coach was purchased, or the date of system installation,

Notify the dealership where you purchased the

If your dealer cannot or will not solve the problem,

description of the problem, and where you can be reached
during business hours (8:00 a.m. till 5:00 p.m. c.s.t.).
HWH CORPORATION personnel will contact you to
determine whether or not your claim is valid. If it is, HWH
CORPORATION will authorize repair or replacement of the
defective part, either by appointment at the factory or by the
authorization of an independent service facility, to be
determined by HWH CORPORATION. All warranty repairs
must be performed by an independent service facility
authorized by HWH CORPORATION, or at the
HWH CORPORATION factory, unless prior written approval
has been obtained from proper HWH CORPORATION
personnel.

MP15.4501

30MAY01

CONTROL IDENTIFICATION

"EXCESS SLOPE"
LIGHT

"NOT IN PARK"
LIGHT

LEVELING SYSTEM
ACTIVE LIGHT

"AIR" (ON) BUTTON

DUMP LIGHT
"TRAVEL MODE" BUTTON

LIGHT (Red)

"TRAVEL MODE" BUTTON
"DUMP" BUTTON

"EMERGENCY STOP" BUTTON
RAISE LIGHT
"RAISE" BUTTON

"TRAVEL MODE"

LIGHT (Green)

CONTROL BUTTONS

HWH COMPUTERIZED LEVELING

EXCESS

SLOPE

AIR

NOT IN

TRAVEL

MODE

EMERGENCY

STOP

RAISE LEFT SIDE
BUTTON

CONTROL FUNCTIONS

PARK /
BRAKE

DUMP

TRAVEL

MODE

RAISE

CAUTION!

UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES

SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.

LOWER LEFT SIDE
BUTTON

HARD RESET SWITCH
(SEE HWH LIGHTED RESET SWITCH)

MASTER WARNING LIGHT

LOWER FRONT BUTTON

RAISE FRONT BUTTON

WARNING LIGHTS
(4 - Red)

RAISE RIGHT SIDE BUTTON
LOWER RIGHT SIDE BUTTON

LEVELING LIGHTS
(4 - Yellow)

RAISE REAR BUTTON

LOWER REAR BUTTON

INDICATOR LIGHTS

"AIR" BUTTON:

This is the system active and automatic

operation button. It works if the ignition is in the "ON" position.

"EMERGENCY STOP" BUTTON:

This button turns the
system OFF but does NOT control power to the "DUMP" or
"RAISE" buttons. Pushing this button will NOT put the system
in the TRAVEL mode.

"TRAVEL MODE" BUTTON:

This button will put the Leveling
System in the TRAVEL mode. The ignition must be "ON" for
the vehicle to return to proper ride height for traveling.

"DUMP" BUTTON:

This button will lower the whole coach by

dumping air from the suspension system.

"RAISE" BUTTON:

This button will raise the whole coach

by adding air to the suspension system.

IMPORTANT:

Read "DUMP AND RAISE FUNCTIONS"

before using the "DUMP" or "RAISE" buttons.

UP ARROWS (RAISE BUTTONS):

These momentary
buttons are used for manually operating the air leveling
systems. Sides or ends of the vehicle will raise while these
buttons are pushed.

DOWN ARROWS (LOWER BUTTONS):

buttons are used for manually operating the air leveling
systems. Sides or ends of the vehicle will lower while these
buttons are pushed.

These momentary

LEVEL SYSTEM ACTIVE LIGHT:

ON when the system is

active, and flashes during automatic leveling.

DUMP LIGHT:

RAISE LIGHT:

"EXCESS SLOPE" LIGHT:

Flashes when "DUMP" button is pushed.

Flashes when "RAISE" button is pushed.

ON if the leveling system

can NOT level the coach.

"TRAVEL MODE" BUTTON LIGHT (RED):

Light flashes

for 3 seconds after the "TRAVEL MODE" button is pushed.

"TRAVEL MODE" LIGHT (GREEN):

ON if the ignition is in
the "ON" position, the system is not being used, and there is
sufficient air pressure in the suspension.
See PREPARATION FOR TRAVEL.

WARNING LIGHTS:

Function with the ignition in the
"ON" position. ON when the LEVELING SYSTEM ACTIVE
LIGHT is ON. See PREPARATION FOR TRAVEL.

LEVELING LIGHTS:

One or two yellow lights can be on
indicating the side, end or corner of the coach is low.

"NOT IN PARK/BRAKE" LIGHT:

ON while the "AIR" button
is being pushed if the Park Brake is NOT set. The light will go
out when the "AIR" button is released.

MASTER WARNING LIGHT:

ON any time the
"TRAVEL" light is not ON, if the ignition is in the
"ON" position.

MP25.998D

31OCT02

OPERATING PROCEDURES

NETWORK INFORMATION

The HWH 2000 series CAN system is a computerized The network will stay active for 10 minutes after theNOTE:
modular network. It controls all functions of the leveling
system and HWH room extensions. The network is active
any time the ignition is in the "ON" or "ACC" position or
when any room extension control panel key is "ON". Certain
functions and indicator lights for the leveling system will work
when the network is active. Certain functions and lights will
work ONLY if the the ignition is in the "ON" or "ACC" position
to start the function.

ignition key has been turned "OFF". If the leveling system
was turned "ON", the network will stay active for 10 minutes
after automatic leveling is complete or the system goes
"EXCESS SLOPE". If manual leveling buttons were used, the
network stays active for 10 minutes after the last manual
button is released.

GENERAL INSTRUCTIONS

Maintain adequate clearance in all directions for vehicles,
room extensions, doors, steps, etc.. Vehicle may move in any
direction due to raising or lowering of vehicle during leveling,
settling of vehicle, equipment malfunction, etc..

The MASTER WARNING LIGHT will be on if an air bag has
low pressure if the ignition is in the "ON" position.

CAUTION: DO NOT MOVE THE VEHICLE AT SPEEDS
IN EXCESS OF 5 MPH IF THE MASTER WARNING LIGHT
IS ON.

HWH LIGHTED RESET SWITCH

The HWH lighted reset switch is located on the vehicle dash.
If there is a failure at any time in the HWH CAN network, the
network will shut down. The leveling system will not operate.
If the ignition is off, no indicator lights will come on. If the
ignition is in the "ON" or "ACC" position, the lighted reset
switch and the MASTER WARNING Light will come on.

If the lighted reset switch is on, the switch must be pushed
before the leveling system can be operated.

The "DUMP" and "RAISE" buttons will function with the
leveling system and park brake off, if the ignition is in the
"ON" or "ACC" position or if the network is active. See AIR
DUMP AND RAISE FUNCTIONS section of this manual.

If the Park Brake is not set, the Leveling System cannot
be turned ON.

If the lighted reset switch will not go out when pushed, there
is a problem with the central control module of the network
system. The Leveling System will not operate. The vehicle
suspension will return to the travel mode if the ignition key
is in the "ON" position.

CAUTION:

AND THE LIGHTED RESET SWITCH IS ON, THE VEHICLE
CAN RETURN TO RIDE HEIGHT WITHOUT RELEASING
THE PARK BRAKE.

IF THE IGNITION IS IN THE "ON" POSITION

Visually check that the vehicle is at the proper ride height for
traveling.

The ignition must be in the "ON" position for the vehicle
suspension to be in the travel mode. Also the "TRAVEL
MODE" button must be pushed or the park brake released
for the suspension to be in the travel mode If the Leveling
System was used.

A lit "TRAVEL MODE" light indicates that the HWH Leveling
System is in the TRAVEL MODE. It does not indicate that
the suspension is at ride height or that the coach is ready
to travel.

PREPARATION FOR TRAVEL

CAUTION:

RESPONSIBILITY TO CHECK THAT THE VEHICLE IS AT
PROPER RIDE HEIGHT BEFORE TRAVELING.

Before traveling, the MASTER WARNING light must be off
and the "TRAVEL MODE" light must be ON.

NOTE:

"TRAVEL MODE" light off and turn the
MASTER WARNING light on.

Refer to "DUMP" and "RAISE" FUNCTIONS operating
procedures when moving the vehicle with the suspension
NOT at the proper ride height.

Low air pressure can turn the green

IT IS THE OPERATOR’S

MP35.200C

26JUL01

OPERATING PROCEDURES

TAG AXLE DUMP

The tag axle dump-switch is supplied by Monaco. This is a
two position switch with one position for "TRAVEL" and one
position for "TAG DUMP".

IMPORTANT:

Dump feature.

Refer to Monaco for the proper use of the Tag

AUTOMATIC AIR OPERATION

NOTE:

use the "AIR" button. Once the operation is started, the
ignition can be moved to the "OFF" position and the operation
will continue.

1. Place the transmission in the proper position for parking
and set the park brake. The air leveling system can only be
turned on if the ignition is in the "ON" or "ACC" position.
Leaving the engine running during leveling is recommended.
This will provide a better air supply for leveling. The vehicle
will level with the engine shut off, however more time will be
required for leveling.

NOTE:

the panel will not turn on if the park brake is not set. The
"NOT IN PARK/BRAKE" light will be on while the "AIR"
button is being pushed.

2. Press the "AIR" button once to enter the air mode. The
LEVELING SYSTEM ACTIVE LIGHT will glow steady. When
the ignition is in the "ON" or "ACC" position, the four red
WARNING lights on the panel will come on. This indicates
that the height control valves have been locked out. The
vehicle should not be moved when these lights are on.

3. Press the "AIR" button a second time. The LEVELING
SYSTEM ACTIVE LIGHT will start flashing and air leveling
will begin. The system will attempt to level the vehicle by
exhausting air from the air bags. If a level position is not
achieved by lowering the vehicle, the low side and/or end of
the vehicle will be raised by adding air to the air bags.
When all four yellow LEVEL SENSING lights are out the
leveling is complete.

may be ON at one time.

The ignition must be in the "ON" or "ACC" position to

With the ignition key in the "ON" or "ACC" position,

Only one or two yellow LEVEL SENSING lights NOTE:

The Tag Dump switch will work only with the ignition switch in
the "ON" position and the leveling system panel off.

NOTE:

ignition key is turned on (with the leveling system panel off) the
tag axle air bags will go into the dump mode.

NOTE:

when the Network shuts down, the computer will stay ON.
The Leveling System touch panel lights will all be OFF,
but the Leveling System will still be in the SLEEP MODE.

5. 30 minutes after the Leveling System enters the SLEEP
MODE, the computer will monitor the LEVELING SENSING
UNIT. If no leveling is needed, the computer will continue
to monitor the LEVELING SENSING UNIT every 30 minutes.

6. If the vehicle needs to be releveled, the CAN Network will
become active. The Leveling System touch panel lights will
come ON during the leveling procedure. The LEVELING
SYSTEM ACTIVE LIGHT will flash. One or two yellow
LEVELING LIGHTS will be ON. When the yellow LEVELING
LIGHTS are all out, the LEVELING SYSTEM ACTIVE LIGHT
will stop flashing and start pulsating dimly. The Leveling
System will remain in the SLEEP MODE with the computer
monitoring the LEVELING SENSING UNIT every 30 minutes,
releveling the vehicle as needed.

NOTE:

after releveling the vehicle and then shut down, turning the
touch panel lights OFF. This happens every time the system
relevels the vehicle.

7. The SLEEP MODE will continue until the "EMERGENCY
STOP" button is pushed or the park brake is released, if the
ignition is in the "ON" position.

EXCESS SLOPE:

vehicle for approximately 15 to 20 minutes. After the 15 to 20
minutes, if a LEVEL SENSING light is still on, the "EXCESS
SLOPE" light will come on. The LEVEL LIGHT indicator light
will go out. The "EXCESS SLOPE" light will be on whenever
the network is active.

If the Tag Dump switch is in the dump position and the

If the Leveling System is in the SLEEP MODE

The CAN Network will stay active for 10 minutes

The system will attempt to level the

4. When all four yellow level lights are out, the LEVELING
SYSTEM ACTIVE LIGHT will stop flashing and start pulsating
dimly. The Leveling System is now in the SLEEP MODE.
The vehicle’s engine/ignition may now be turned OFF.

After the ignition and all room extension KEY

NOTE:

SWITCHES are turned OFF, the CAN Network stays active
for 10 minutes before shutting down. Leveling System touch
panel lights will stay ON during this time and go out when
the CAN Network shuts down.

The "EXCESS SLOPE" light will be on whenever the network
is active until the vehicle is leveled with all yellow LEVEL
indicator lights off.

MP35.206C

11AUG03

OPERATING PROCEDURES

MANUAL AIR OPERATION

NOTE: The ignition must be in the "ON" or "ACC" position to

use the "AIR" button. Once the operation is started, the
ignition can be moved to the "OFF" position and the operation
will continue.

1. Place the transmission in the proper position for parking
and set the park brake. The air leveling system can only be
turned on if the ignition is in the "ON" or "ACC" position.
Running the vehicle engine during leveling is recommended.
This will provide a better air supply for leveling. The vehicle
will level with the engine shut off, however more time will be
required for leveling.

NOTE:

system cannot be turned on.

2. Press the "AIR" button once to enter the air mode. The
LEVELING SYSTEM ACTIVE LIGHT indicator light will glow
steady. When the ignition is in the "ON" or "ACC" position,
the four red WARNING lights on the panel will come on. This
indicates that the height control valves have been locked out.
The vehicle should not be moved when these lights are on.

If the "NOT IN PARK/BRAKE" light is on, the leveling

AIR DUMP AND RAISE FUNCTIONS

The "DUMP" and "RAISE" functions are provided for operator
convenience for purposes such as dumping air suspension
when parked in the wind, or raising or lowering the vehicle to
avoid obstacles. The "DUMP" and "RAISE" buttons will function
with the system on or off.

IMPORTANT:

ally turn off when the button is released. If the ignition is in
the "ON" position the suspension will return to travel height.

CAUTION:

OF THIS MANUAL. THE VEHICLE MAY DROP OR RAISE
AND/OR MOVE FORWARD OR BACKWARD WITHOUT
WARNING CAUSING INJURY OR DEATH.

DO NOT OPERATE THE VEHICLE OVER 5 M.P.H. UNLESS
AIR SUSPENSION IS AT THE PROPER HEIGHT FOR TRAVEL.

"DUMP" and "RAISE" functions will automatic-

REREAD CAUTIONS ON THE FIRST PAGE

3. The vehicle can now be leveled using the RAISE (up arrow)
and LOWER (down arrow) buttons on the right half of the
panel in conjunction with the yellow LEVEL indicator lights.

Any side to side leveling should be done before leveling
the vehicle front to rear. Try leveling the vehicle by lowering

the opposite side or end. If a level position is not achieved
use the RAISE (up arrow) button to raise the low side or end.
The yellow LEVEL indicator light indicates that side or end is
low. When all yellow lights are out the vehicle is level.

NOTE:

manually leveling the vehicle with air and the ignition is in the
"ON" position, the system will latch into the dump or raise
mode until the "EMERGENCY STOP" button is pushed or the
ignition is turned off.

4. Turn the ignition to the "OFF" position.

5. Turn the system off.

1. Leave the engine running if the "RAISE" function is to be
used. The park brake does not have to be set and the system
does not have to be on to use the "RAISE" or "DUMP" functions.

2. Press and hold the "RAISE" or "DUMP" button as desired
to raise or lower the vehicle. The system will remain in the
"RAISE" or "DUMP" mode as long as the button is held down.
When the button is released the system will automatically turn
turn off. If the ignition is in the "ON" position the suspension will
return to travel height.

3. If desired for clearing an obstacle, the vehicle may be moved
while in the "RAISE" or "DUMP" mode for a short distance at
a slow speed. Remember the vehicle will return to travel height
when the "RAISE" or "DUMP" button is released and the leveling
system is off.

If the "DUMP" or "RAISE" buttons are pushed while

Review the operator’s manual and check that all functions
and lights work correctly.

"NOT IN PARK/BRAKE" Check: Set hand/auto park brake.
Set the transmission in the recommended position for
parking the vehicle. Turn the ignition on. Push the
"AIR" button on the touch panel. Release the hand/auto park
brake.

CAUTION: THE VEHICLE MAY MOVE FORWARD OR

BACKWARD WHEN THE PARK IS RELEASED.

OPERATIONAL CHECK

Check that the "NOT IN PARK/BRAKE" light comes ON.
Reapply the park brake. The "NOT IN PARK/BRAKE" light
should go out.

NOTE: If any checks reveal any problems or if there are
other problems or questions, consult a qualified rv repair
center, your vehicle or coach manufacturer or HWH
Corporation for service or assistance.

MP35.207C

02AUG01

SENSING UNIT MAINTENANCE/SERVICE

SENSING UNIT ACCURACY TOLERANCE

The sensing unit has an accuracy tolerance of ± 5.4 inches front to rear and

± 1 inch side to side on a 36 foot vehicle. Typical leveling results will be better.

SENSING UNIT ADJUSTMENT

Level the vehicle by placing a bubble level in the center of
the freezer floor or upon whichever surface within the vehicle
that is to be level. Using the Leveling System and the bubble
level, ignoring the yellow LEVEL lights on the Touch Panel,
level the vehicle until the bubble is centered.

With the vehicle level according to the bubble level, if there
are no yellow lights lit on the Touch Panel, the sensing unit is
properly adjusted. If there are yellow LEVEL lights lit on the
Touch Panel, manual adjustments to the Sensing Unit are
needed. A Phillips screw driver or sockets w/driver or box
end wrenches of 7/8, 3/4, 1/2, 5/16 or 1/4 sizes will be needed.

The Sensing Unit is mounted inside the Control Box. The
Control Box is mounted to the power unit/valve assembly.

There are four LED’s on the Sensing Unit, A,B,C and D. Refer
to the drawing below. The Sensing Unit is adjusted by turning
the adjustment nut to turn out LED’s B and D. The adjustment
screw will turn out LED’s A and C. If the adjustment nut has
to be turned more than 1/2 flat or the adjustment screw has to
be turned more than 3/4 turn to turn the LED out, there may
be a problem with the Sensing Unit or the mounting of the
Control Box. If two LED’s are on, it is best to make the B-D
adjustments first, then hold the adjustment nut from moving
while making the A-C adjustment.

TOP VIEW - SENSING UNIT

A

LED’S - LOCATION
MAY BE DIFFERENT

D B

NOTE: If opposing LED’s are lit, there is a problem with
the Sensing Unit.

If LED (A) is lit: Turn the adjustment screw COUNTER
CLOCKWISE until the LED is off.

If LED (C) is lit: Turn the adjustment screw CLOCKWISE
until the LED is off.

If LED (B) is lit: Turn the adjustment nut COUNTER
CLOCKWISE until the LED is off.

If LED (D) is lit: Turn the adjustment nut CLOCKWISE
until the LED is off.

IMPORTANT: When all 4 LED’s are off, move the
vehicle to an unlevel position so one or two yellow
lights are on. Level the vehicle according to the yellow
LEVEL lights. Recheck the level. If more adjustment is
needed, DO NOT try to adjust the sensing unit until the
yellow level lights go out, instead just "tweak" the
sensing unit, ignoring the LED’s on the sensing unit.

Example: After the initial adjustment and releveling
the vehicle, the front is still low. This means the front
yellow level light is turning off too soon. Determine
which sensing unit light is the front light, A-B-C or D.
Move the adjustment for that light very, very, slightly in
the OPPOSITE direction that is given in the above
instructions for LED’s A, B, C, and D. This will allow
the front yellow light to stay on slightly longer to bring
the front up more. Again, unlevel the vehicle then
relevel the vehicle using the yellow level lights on the
touch panel. Recheck with a level. Repeat the
"tweaking" process until the system levels the vehicle
properly.

SIDE VIEW - CONTROL BOX

CONTROL
BOX WALL

(OLD STYLE)
ADJUSTMENT
NUT (7/8" or 3/4")

MP85.6148

C

ADJUSTMENT

(OLD STYLE)
ADJUSTMENT
NUT (7/8" or 3/4")

ADJUSTMENT SCREW
ADJUSTMENT NUT (5/16" OLD) - (1/2" NEW)

NUT (5/16" OLD) - (1/2" NEW)

ADJUSTMENT

SCREW (Phillips or 1/4")

MP45.271M

07MAY09

FOUR POINT AIR LEVELING WITH TAG AXLE

FRONT

SUSPENSION

AIR LINE CONNECTION DIAGRAM

1/4" LINE

H

C

1/4" LINE

HEIGHT CONTROL

V

VALVE (3-PLACES)

LINE FROM
HEIGHT
CONTROL
VALVE

AIR
BAG

COMPRESSOR

FRONT

DRIVE
SUSPENSION

1/4" LINE

AUX. 12V

AIR

1/4"
LINE

3/8" LINE

3/8" LINE

MANIFOLD

ASSEMBLY

REAR

1/4"
LINE

3/8" LINE

3/8"
LINE

AIR
SUPPLY

1/4" LINE

AIR
BAG

REGULATOR

FRONT

AIR TANK

LINES TO
AIR BAGS

AIR
BAG

TAG

3/8" LINE

TAG

MANIFOLD
ASSEMBLY

3/8" LINE

AIR PRESSURE
REGULATOR

H

C

V

3/8" LINE

TO AIR SUPPLY

1/4"
LINE

3/8" LINE

H

C

V

AIR
BAG

3/8" LINE

AIR
CANISTER

REGULATOR

REAR

AIR TANK

MP75.010C

05DEC06

AIR LEVEL SCHEMATIC - MONACO

4-POINT LEVELING WITH AIR COMPRESSOR

PRESSURE SWITCHES FRONT AND REAR DRIVE AXLE

COMPRESSOR

DIAGRAM

FRONT

SEE AIR

FRONT HEIGHT
CONTROL VALVE
(HCV)

FRONT MANIFOLD ASSEMBLY

AIR AIR
BAG

EXH EXH

AIR
BAG

TRAV.

LOWER

RAISE RAISE

REAR MANIFOLD ASSEMBLY

EXISTING
SUPPLY

EXH

TRAV.

LOWER

BAG

FRONT

AIR
BAG

REGULATOR

FRONT

AIR

TANK

PRESSURE
SWITCH
20 PSI (2)

PRESSURE
SWITCH
20 PSI (2)

EXH EXH

AIR AIR
BAG

AIR
BAG

85 PSI PRESSURE SWITCH

TAG MANIFOLD ASSEMBLY

AIR PRESSURE
REGULATOR

EXH

AIR
BAG

TRAV.

LOWER

RAISE

TRAV.

TRAV.

LOWER

RAISE

TRAV.

LOWERLOWER

BAG

DRIVER

AIR
BAG

EXH

AIR
BAG

EXHEXH

RR HCVLR HCV

REGULATOR

REAR

AIR

TANK

TAG AXLE

AIR SUPPLY

TAG

RAISE

TAG

RAISE

MP75.020C

02AUG01

FRONT AIR SOLENOID MANIFOLD CONNECTIONS

6 VALVE WITH TWO PRESSURE SWITCHES

LINES FROM HEIGHT
CONTROL VALVES -

3.400"

REAR
VIEW

TWO MAY BE TEE’D
TOGETHER IF ONE
HCV IS USED.

LINE TO LF
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

LINE TO LF
AIR BAG

LEFT SIDE

IMPORTANT:

LEFT AND RIGHT
CONNECTIONS MUST BE MAINTAINED
AS SHOWN. GROUND SUPPLY WIRES
FOR AIR PRESSURE SWITCHES AND
AIR SOLENOID VALVES CANNOT
BE INTERCHANGED.

MOUNTING HOLES
LINE FROM HEIGHT

CONTROL VALVE (MAY BE
TEED TOGETHER IF ONE
HCV IS USED)

LINE TO AIR BAGS
(2 LEFT AND RIGHT)

EXHAUST PORTS
(2 LEFT AND RIGHT)

PRESSURE SWITCH
20 PSI (2 LEFT AND RIGHT)

LINE TO AIR BAGS
(2 LEFT AND RIGHT)

LINE TO RF
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

LINE TO RF
AIR BAG

RIGHT SIDE

AIR
SUPPLY

TRAVEL

PSW

RS

RS

ABBABABABABABABABA

BA BA BA BA BA BA BA BA

TRAVEL

PSW

RS

RS

RAISE

RAISE

RS

LOWER

RS

LOWER

RS

LOWER

RS

LS

LOWER

LS

RAISE

RAISE

LS

LS

RIGHT SIDE
VIEW

RIGHT TRAVEL
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

RIGHT LOWER
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

PSW

PSW

TRAVEL

PSW

SYS

LS

LS

TRAVEL

LS

LS

AIR SUPPLY

CHECK
VALVE (2)

RIGHT RAISE
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

MP75.030C

02AUG01

REAR AIR SOLENOID MANIFOLD CONNECTIONS

6 VALVE WITH THREE PRESSURE SWITCHES

LINES FROM HEIGHT
CONTROL VALVES -

3.400"

REAR
VIEW

TWO MAY BE TEE’D
TOGETHER IF ONE
HCV IS USED.

LINE TO LR
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

LINE TO LR
AIR BAG

LEFT SIDE

PRESSURE
SWITCH-85 PSI

IMPORTANT:

LEFT AND RIGHT
CONNECTIONS MUST BE MAINTAINED
AS SHOWN. GROUND SUPPLY WIRES
FOR AIR PRESSURE SWITCHES AND
AIR SOLENOID VALVES CANNOT
BE INTERCHANGED.

MOUNTING HOLES

LINE TO RR
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

LINE TO RR
AIR BAG

RIGHT SIDE

AIR
SUPPLY

TRAVEL

PSW

RS

RS

ABBABABABABABABABA

BA BA BA BA BA BA BA BA AB

TRAVEL

PSW

RS

RS

RAISE

RAISE

RS

LOWER

RS

LOWER

RS

LOWER

RS

LS

LOWER

LS

RAISE

RAISE

LS

LS

PSW

PSW

TRAVEL

LS

LS

TRAVEL

LS

LS

PSW

PSW

SYS

SYS

LINE FROM HEIGHT
CONTROL VALVE (MAY BE
TEED TOGETHER IF ONE
HCV IS USED)

LINE TO AIR BAGS
(2 LEFT AND RIGHT)

EXHAUST PORTS
(2 LEFT AND RIGHT)

PRESSURE SWITCH
20 PSI (2 LEFT AND RIGHT)

LINE TO AIR BAGS
(2 LEFT AND RIGHT)

AIR SUPPLY

PRESSURE
SWITCH-85 PSI

RIGHT SIDE
VIEW

CHECK
VALVE (2)

RIGHT TRAVEL
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

RIGHT LOWER
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

RIGHT RAISE
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

MP75.040C

02AUG01

TAG AIR SOLENOID MANIFOLD CONNECTIONS

6 VALVE WITH TWO PRESSURE SWITCHES

LINE FROM
TAG PRESSURE

3.400"

REAR
VIEW

REGULATOR
(TEE’D TO BOTH
FITTINGS).

LINE TO LS TAG
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

LEFT SIDE

NOTE:

PRESSURE SWITCHES
ON TAG AXLE MANIFOLD ARE
NOT USED ON ALL SYSTEMS.

IMPORTANT:

LEFT AND RIGHT
CONNECTIONS MUST BE MAINTAINED
AS SHOWN. GROUND SUPPLY WIRES
FOR AIR PRESSURE SWITCHES AND
AIR SOLENOID VALVES CANNOT
BE INTERCHANGED.

MOUNTING HOLES

LINE TO RS TAG
AIR BAG

EXHAUST
PORT

PRESSURE
SWITCH-20 PSI

RIGHT SIDE

AIR
SUPPLY

TRAVEL

PSW

RS

RS

ABBABABABABABABABA

BA BA BA BA BA BA BA BA

TRAVEL

PSW

RS

RS

RAISE

RAISE

RS

LOWER

RS

LOWER

RS

LOWER

RS

LS

LOWER

LS

RAISE

RAISE

LS

LS

PSW

PSW

TRAVEL

LS

TRAVEL

LS

PSW

SYS

LS

LS

LINE FROM TAG
PRESSURE REGULATOR
(TEE’D TO BOTH
FITTINGS)

LINE TO AIR BAGS
(2 LEFT AND RIGHT)

EXHAUST PORTS
(2 LEFT AND RIGHT)

PRESSURE SWITCH
20 PSI (2 LEFT AND RIGHT)

AIR SUPPLY

RIGHT SIDE
VIEW

CHECK
VALVE (2)

RIGHT TRAVEL
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

RIGHT LOWER
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

RIGHT RAISE
SOLENOID VALVE (LEFT
VALVE NOT SHOWN)

MP75.050C

02AUG01

12 VOLT RELAY (2)

GROUND

AIR COMPRESSOR DIAGRAM

FUSE
15 AMP

FROM AIR
SOLENOID

+12 SIGNAL FROM
PRESSURE SWITCH

BA

NORMALLY OPEN
AIR SOLENOID (3)

GROUND TO RELAY MOUNTING BOLT

SWITCHED +12 COMPRESSOR CONTROL - 9700

The control box sends a +12 signal to the normally closed pressure switch (1).
energize and the compressor will run.
When the pressure builds to 115 psi the procure switch will open, stopping the air compressor.
(3) will open, allowing internal pressure & moisture to bleed off.
back to the compressor. As air pressure drops below 105 psi the compressor will start.

CHECK VALVE (4)

AIR LINE TO SUSPENSION

FLOW

PRESSURE SWITCH (1)
NORMALLY CLOSED
(OPEN AT 115 PSI)
(CLOSED AT 105 PSI)

AIR FILTER

AB

+12 BATTERY

P.E.D

POWER - 6104

COMPRESSOR HARNESS
FROM CONTROL BOX - 9700

If the pressure is low, the 12 volt relay (2) will

The normally open air solenoid (3) will close allowing the compressor to build pressure.

The normally open air solenoid

The check valve (4) will keep the suspension air from bleeding

MP75.060C

08SEP03

ELECTRICAL CONNECTION DIAGRAM

LIGHTED
RESET
SWITCH

7550
7599

7599
6230

6230

6100
7550
61217699

7699
6230
7599

6121
7550
6100

TO AUXILARY AIR COMPRESSOR
TO CN1 (12 PIN BROWN)

TAG DUMP SWITCH
HARNESS TO CN100

DETAIL (A)

CONNECTION

PROVIDED BY OEM
NOTE:

THERE IS A
DIODE IN WIRE 6102.
WIRE 6102 WILL BE
WIRE 6101 IN THE
PLUG AT THE BOX.

WARNING
LIGHT

6100

6121

AIR MANIFOLD
PIGTAIL

TRAVEL
1700

LF PRESS.
SW. 1210

LF LOWER
1600

LF RAISE
1500

2000 SERIES CAN SYSTEM

AIR LEVELING

LEVELING SYSTEM

TOUCH PANEL

HWH COMPUTERIZED LEVELING

EXCESS
SLOPE

AIR

NOT IN
PARK

7699

FUSE
20 AMP

6103

9700

AB ABABAB

TRAVEL

DUMP

EMERGENCY

STOP

TRAVEL

CAUTION!

UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES

SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.

6103
6120
6102
9000

DETAIL (A)

AB

P.E.D

FRONT AXLE
AIR MANIFOLD

TO CN1 (8 PIN BLACK)

TO CN10 (6 PIN GRAY)

POWER HARNESS

6110
6104
6230
6100
7521
6801
6230
NC

6104

AB

P.E.D

P.E.D P.E.D P.E.D P.E.D P.E.D P.E.D P.E.D

B AB A B A B A

TO
CN11
AND
CN98

7521
6801

TRAVEL
1700

RF PRESS.
SW. 2210

RF LOWER
2600

RF RAISE
2500

SEE
ELECTRICAL
CONNECTION
DIAGRAM ­CENTRAL
CONTROL/
AIR MODULE
CONNECTION
INFORMATION

FRONT AXLE
HARNESS
TO CN100
AND CN1
(12 PIN
BROWN)

DRIVE AXLE
HARNESS
TO CN100
AND CN1
(12 PIN
BLACK)

NOTE:SEE ELECTRICAL
CONNECTION DIAGRAM-CENTRAL
CONTROL MODULE CONNECTION
INFORMATION FOR WIRE FUNCTIONS.

SEE ELECTRICAL

NOTE:

CONNECTION DIAGRAM-AIR
MANIFOLD PIGTAILS AND
AIR SOLENOID MANIFOLD
CONNECTIONS FOR SPECIFIC
AIR MANIFOLD CONNECTION
INFORMATION. HARNESS
AND VALVE CONNECTIONS
ARE LABELED. LEFT AND
RIGHT CONNECTIONS MUST
BE MAINTAINED AS SHOWN.

AIR MANIFOLD
PIGTAIL

TRAVEL
3700

LF PRESS.
SW. 4210

LF LOWER
4600

LF RAISE
4500

DRIVE AXLE
AIR MANIFOLD

B A B

P.E.D

P.E.D

P.E.DP.E.D

P.E.DP.E.D

P.E.DP.E.D

P.E.D

TAG AXLE

AA B AB

AB B A

B A B A

TRAVEL

B A

3700
RF PRESS.

SW. 3210
RF LOWER

3600

HARNESS
TO CN100
AND CN1
(12 PIN
BLACK)

SEE
ELECTRICAL
CONNECTION

SYSTEM
PRESS. SW.
3215

RF RAISE
3500

DIAGRAM
TAG AXLE
AIR MANIFOLD

MP85.010C

05SEP03

ELECTRICAL CONNECTION DIAGRAM

TAG AXLE AIR MANIFOLD

SEE ELECTRICAL CONNECTION DIAGRAM
2000 SERIES CAN SYSTEM
AIR LEVELING WITH TAG AXLE

TAG AXLE HARNESS
TO CN1 (12 PIN BLACK)

TRAVEL
3701

L TAG PRESS.
SW. 4211

P.E.D

B A B

3800

TAG LIFT
(MAY NOT BE USED)

AIR MANIFOLD
PIGTAIL

P.E.D

P.E.D

P.E.D

AB

AA B

P.E.D

P.E.D

P.E.DP.E.D

AB

B A

B A B A

TRAVEL
3701

R TAG PRESS.
SW. 3211

L TAG LOWER
4600

L TAG RAISE
4500

R TAG LOWER
3601

R TAG RAISE
3501

TAG AXLE AIR
MANIFOLD

NOTE: HARNESS AND VALVE CONNECTIONS

ARE LABELED. SEE TAG AIR SOLENOID MANIFOLD

CONNECTIONS FOR SPECIFIC CONNECTION
INFORMATION LEFT AND RIGHT CONNECTIONS
MUST BE MAINTAINED AS SHOWN.

MP85.020C

05SEP03

ELECTRICAL CONNECTION DIAGRAM

CENTRAL CONTROL / AIR MODULE

PAGE 1 OF 2

PIN #

CN1

1
2
3
4
5
6
7
8

CN10

1
2
3
4
5
6

CN11

1
2
3
4
5
6
7
8
9
10
11
12

CN9

1 THRU 8

WIRE
COLOR

RED
WHITE

­GREEN

YELLOW
BLACK

RED
BLACK
RED
WHITE
BLACK

RED

RED
RED
WHITE

BLACK
RED

FRONT VIEW

PIN 8
PIN 1

CN1

WIRE
NUMBER

6800
6230

-

-

­7599

6100
7550
6121
6230
7699

6110

6120
6100
6230

9000
6101

PIN 1
PIN 6

CN10 CN11 CN9

PIN 12
PIN 1

WIRE DESCRIPTION AND FUNCTION

8 PIN BLACK CONNECTOR

NO CONNECTION
NO CONNECTION
+12 SWITCHED BATTERY TO TOUCH PANEL
GRND TO TOUCH PANEL
SHIELD WIRE FOR CAN CABLE
NO CONNECTION
CAN DATA LINE LOW-DO NOT MODIFY
CAN DATA LINE HIGH-DO NOT MODIFY

6 PIN GRAY CONNECTOR

RESET SWITCH LIGHT CONTROL-SWITCHED +12
RESET SWITCH SUPPLY +12
RESET SWITCH OUTPUT +12
WARNING LIGHT SUPPLY +12
RESET SWITCH LIGHT GROUND
WARNING LIGHT CONTROL - SWITCHED GROUND

12 PIN GRAY CONNECTOR

SWITCHED +12 FROM IGNITION
NO CONNECTION
NO CONNECTION
NO CONNECTION
SWITCHED +12 FROM ACCESSORY
HOUSE BATTERY +12
GROUND FOR PROCESSOR
NO CONNECTION
NO CONNECTION
NO CONNECTION
FROM PARK BRAKE SWITCH - SWITCHED GROUND
ENGINE BATTERY +12

8 PIN GREEN CONNECTOR

NO CONNECTION

PIN 8
PIN 1

CLEAR TOP

MP85.030C

05SEP03

ELECTRICAL CONNECTION DIAGRAM

CENTRAL CONTROL / AIR MODULE

PAGE 2 OF 2

RIGHT SIDE VIEW

PIN 1

NEUTRAL
HOLD
OVERRIDE
SWITCH
(NOT USED)

PIN #

CN1 (12 PIN BROWN)

1
2
3
4
5
6
7
8
9
10
11
12

CN98

1
2
3
4

CN1/1 (12 PIN BLACK)

1
2
3
4
5
6
7
8
9
10
11
12

CN100

1
2
3
4
5
6
7
8
9
10
11
12

WIRE
COLOR

BLACK
BLACK
BLACK
BLACK
BLACK

BLACK

WHITE

BLACK
BLACK
WHITE
WHITE

BLACK
BLACK
BLACK
BLACK
BLACK

BLACK
BLACK
BLACK
BLACK
WHITE

BLACK
BLACK
BLACK
BLACK
WHITE
BLACK
BLACK
BLACK
BLACK
BLACK

PIN 12

WIRE
NUMBER

1500
1600
2500
2600
9700

1700

6254

6800
6800
6230
6230

3800
4500
4600
3500
3600

3701
3700
3601
4601
6258

1210
2210
3210
4210
6231
6800
3215
3211
4211
7521

PIN 4

CN1 BROWN

PIN 1

PIN 1
PIN 12

12 PIN BROWN CONNECTOR

NO CONNECTION
LEFT FRONT RAISE AIR VALVE CONTROL - SWITCHED +12
LEFT FRONT LOWER AIR VALVE CONTROL - SWITCHED +12
RIGHT FRONT RAISE AIR VALVE CONTROL - SWITCHED +12
RIGHT FRONT LOWER AIR VALVE CONTROL - SWITCHED +12
AUXILARY AIR COMPRESSOR CONTROL - SWITCHED +12
NO CONNECTION
FRONT AIR MANIFOLD TRAVEL VALVES CONTROL - SWITCHED +12
NO CONNECTION
NO CONNECTION
GROUND FOR AIR SOLENOID VALVES
NO CONNECTION

4 PIN GRAY CONNECTOR

SWITCHED +12 BATTERY
SWITCHED +12 BATTERY
GROUND FROM GROUND STUD - FOR SOLENOID VALVES
GROUND FROM GROUND STUD - FOR SOLENOID VALVES

12 PIN BLACK CONNECTOR

TAG LIFT - SWITCHED +12
LEFT REAR RAISE AIR VALVE CONTROL - SWITCHED +12
LEFT REAR LOWER AIR VALVE CONTROL - SWITCHED +12
RIGHT REAR RAISE AIR VALVE CONTROL - SWITCHED +12
RIGHT REAR LOWER AIR VALVE CONTROL - SWITCHED +12
NO CONNECTION
TAG AIR MANIFOLD TRAVEL VALVES CONTROL - SWITHED +12
REAR AIR MANIFOLD TRAVEL VALVES CONTROL - SWITCHED +12
RIGHT TAG LOWER AIR VALVE CONTROL - SWITCHED +12
LEFT TAG LOWER AIR VALVE CONTROL - SWITCHED +12
GROUND SUPPLY FOR REAR AND TAG AIR SOLENOID VALVES
NO CONNECTION

12 PIN GRAY CONNECTOR

NO CONNECTION
LEFT FRONT PRESSURE SWITCH INPUT - SWITCHED GROUND
RIGHT FRONT PRESSURE SWITCH INPUT - SWITCHED GROUND
RIGHT REAR PRESSURE SWITCH INPUT - SWITCHED GROUND
LEFT REAR PRESSURE SWITCH INPUT - SWITCHED GROUND
GROUND SUPPLY FOR ALL AIR MANIFOLD PRESSURE SWITCHES
SWITCHED +12 SUPPLY TO TAG DUMP SWITCH
AIR SYSTEM PRESSURE SWITCH - SWITCHED GROUND
RIGHT TAG PRESSURE SWITCH INPUT - SWITCHED GROUND
LEFT TAG PRESSURE SWITCH INPUT - SWITCHED GROUND
SWITCHED +12 FROM TAG DUMP SWITCH
NO CONNECTION

CN98

CN100

PIN 1

CN1/1 BLACK

PIN 12

WIRE DESCRIPTION AND FUNCTION

LEVELING SENSING UNIT
ADJUSTMENT MECHANISM ­SEE ELECTRICAL CONNECTION
DIAGRAM LEVEL SENSING
UNIT ADJUSTMENT.

MP85.040C

05SEP03

ELECTRICAL CONNECTION DIAGRAM

LED - FUSE LOCATION AND DESCRIPTION

CENTRAL CONTROL / AIR MODULE

PAGE 1A OF 1 A-B

CENTRAL CONTROL MOTHER BOARD

7-RED
LINK LIGHT

4-RED ENGINE
BATTERY - IN

6-NOT USED
3-RED

SWITCHED 12V - IN
5-RED

SPEED SWITCH
(NOT USED)

2-RED PUMP
RELAY CONTROL
(NOT USED)

1-RED MASTER
RELAY CONTROL
(NOT USED)

SENSING UNIT

+12V
REAR

15AMP SWITCHED
BATTERY FROM
MASTER RELAY

F5

CN1 CN10 CN11 CN9

RIGHT SIDE
FRONT
LEFT SIDE
GROUND

3AMP
ACCESSORY

5AMP

ENGINE BATT - IN

F8

F7

9 (NOT USED)
10-RED PRESSURE

SWITCH (NOT USED)

15AMP

HOUSE BATT - IN

3AMP

RESET OUT

F6 F2 F1

5AMP

IGNITION - IN

11-RED
PARK BRAKE

8-RED
NEUTRAL
HOLD

5AMP MASTER

F3 F4

5AMP

RELAY CONTROL

PUMP RELAY

CONTROL

DESCRIPTIONLED CN AND PIN

MASTER RELAY CONTROL1-RED CN 9 - PIN 1
(NOT USED)

2-RED PUMP RELAY CONTROL CN 9 - PIN 4

(NOT USED)

3-RED SWITCHED 12V FROM CN 1 - PIN 3

MASTER RELAY
ENGINE BATTERY - IN4-RED CN 11 - PIN 12

5-RED SPEED SWITCH CN 9 - PIN 5

(NOT USED)
NOT USED NOT USED6-NOT USED
LINK LIGHT7-RED CN 1 - PIN 7 & 8
NEUTRAL HOLD8-RED CN 11 - PIN 8 & 9
NOT USED9-NOT USED NOT USED

(NOT USED)

11-RED PARK PRAKE - ON CN 11 - PIN 11

NOTE: FOR DETAILED INPUT / OUTPUT INFORMATION ABOUT PIN
CONNECTIONS SEE ELECTRICAL CONNECTION DIAGRAM - CENTRAL
CONTROL / AIR MODULE CONNECTION INFORMATION - PAGE 1 OF 2

FUSE DESCRIPTION

F1 - 5AMP IGNITION - IN
F2 - 15AMP HOUSE BATTERY - IN
F3 - 5AMP MASTER RELAY CONTROL
F4 - 5AMP PUMP RELAY CONTROL
F5 - 15AMP SWITCHED BATTERY - IN
F6 - 3AMP RESET OUT
F7 - 3AMP ACCESSORY - IN
F8 - 5AMP ENGINE BATTERY - IN

ALSO SEE MP85.048C FOR DIFFERENT
FUSE ARRANGEMENT.

CN 9 - PIN 23000 LBS PRESS SWITCH - ON10-RED

MP85.050V

15AUG07

7-RED
LINK LIGHT

4-RED ENGINE
BATTERY - IN

3-RED
SWITCHED 12V - IN

5-RED
SPEED SWITCH

2-RED PUMP
RELAY CONTROL

1-RED MASTER
RELAY CONTROL

ELECTRICAL CONNECTION DIAGRAM

LED - FUSE LOCATION AND DESCRIPTION

CENTRAL CONTROL MODULE (BOTTOM RING)

PAGE 1B OF 1 A-B

CENTRAL CONTROL MOTHER BOARD

15AMP SWITCHED
BATTERY TO CAN
MODULES

SENSING UNIT

+12V
REAR

F5

CN1

RIGHT SIDE
FRONT
LEFT SIDE
GROUND

PF1 - POLY
FUSE

CN10

3AMP
POWER TO CN100
(IF APPLICABLE)

15AMP HOUSE
BATT - IN

IGNITION - IN

7.5AMP

F1
F7
F9

3AMP
ACCESSORY

9 (NOT USED)
10-RED 3000lb

PRESS. SWITCH

3AMP ENGINE
BATT - IN

F2
F6

CN11

11-RED
PARK BRAKE

8-RED
NEUTRAL
HOLD

5AMP MASTER

PUMP RELAY

5AMP

RELAY CONTROL

CN9

CONTROL

F4F3

LED

1-RED
2-RED
3-RED
4-RED

5-RED
7-RED
8-RED
9-NOT USED
10-RED
11-RED

NOTE: FOR DETAILED INPUT / OUTPUT INFORMATION ABOUT PIN
CONNECTIONS SEE ELECTRICAL CONNECTION DIAGRAM - CENTRAL
CONTROL / AIR MODULE CONNECTION INFORMATION - PAGE 1 OF 2

* LED 5 INDICATES A +12 SIGNAL FROM THE SPEED SWITCH - IGNITION ON COACH SPEED LESS THAN 10 MPH
** LED 8 INDICATES TRANSMISSION IS DISABLED WHEN LIT.

MASTER RELAY CONTROL
(NOT USED)
PUMP RELAY CONTROL
(NOT USED)
SWITCHED 12V FROM
MASTER RELAY
ENGINE BATTERY - IN
SPEED SWITCH*
LINK LIGHT
NEUTRAL HOLD**
NOT USED
3000 LBS PRESS SWITCH - ON
PARK PRAKE - ON

DESCRIPTION

CN AND PIN

CN 9 - PIN 1
CN 9 - PIN 4
CN 1 - PIN 3
CN 11 - PIN 12

CN 9 - PIN 5
CN 1 - PIN 7 & 8
CN 11 - PIN 8 & 9
NOT USED
CN 9 - PIN 2
CN 11 - PIN 11

FUSE DESCRIPTION

PF1 - POLY FUSE - POWER TO

MASTER WARNING LIGHT AND

RESET SWITCH
F1 - 7.5AMP IGNITION - IN
F2 - 15AMP HOUSE BATTERY - IN
F3 - 5AMP MASTER RELAY CONTROL
F4 - 5AMP PUMP RELAY CONTROL
F5 - 15AMP SWITCHED BATTERY - IN
F6 - 3AMP RESET OUT
F7 - 3AMP ACCESSORY - IN
F9 - 3AMP POWER TO CN100

(IF APPLICABLE)

MP85.053V

18SEP07

ELECTRICAL CONNECTION DIAGRAM

LED - FUSE LOCATION AND DESCRIPTION

CENTRAL CONTROL / AIR MODULE

CN1 BROWN

3-RED
4-YELLOW
5-YELLOW
6-RED
7-RED
8-YELLOW
9-YELLOW
10-RED
11-RED
12-YELLOW
19-YELLOW
20-RED

LEFT

FRONT

RAISE

F2

4
3

FUSE

RELAY DESCRIPTIONLED FUSE BROWN

LEFT FRONT RAISE
LEFT FRONT RAISE
LEFT FRONT LOWER
LEFT FRONT LOWER
RIGHT FRONT RAISE
RIGHT FRONT RAISE
RIGHT FRONT LOWER
RIGHT FRONT LOWER
COMPRESSOR
COMPRESSOR
TRAVEL
TRAVEL

AIR LEVEL OUTPUT BOARD

LOWER

LEFT

FRONT

RAISE

RIGHT

FRONT

LOWER

F3

LED

F4

5
6

F2-5 AMP

F3-5 AMP
F4-5 AMP

F5-5 AMP
F6-5 AMP

F10-7.5 AMP

F5

8
7

FRONT

RIGHT

F6

9

10

PIN 2

PIN 3
PIN 4

PIN 5
PIN 6

PIN 8

F10

TRAVEL

19
20

RESSOR

COMP

12

11

NOTE: FOR DETAILED INPUT / OUTPUT
INFORMATION ABOUT PIN CONNECTIONS
SEE ELECTRICAL CONNECTION DIAGRAM ­CENTRAL CONTROL / AIR MODULE
CONNECTION INFORMATION.

NOTE: A LIT YELLOW LED INDICATES THERE
IS A GROUND SIGNAL TO TURN THE
CORRESPONDING RELAY ON.

A LIT RED LED INDICATES THERE IS
VOLTAGE ON IT’S CORRESPONDING PIN.

IF A YELLOW LED IS LIT AND THE
CORRESPONDING RED LED IS OFF, EITHER
IT’S FUSE IS BLOWN OR THE RELAY IS BAD.

NOTE: THE TRAVEL RELAY IS WIRED AS A
NORMALLY CLOSED RELAY. WHEN THE YELLOW
LED (19) IS ON THE RELAY CONTACTS WILL OPEN.

THE RED LED (20) WILL NOT BE ON. THE RED LED
WILL BE ON IF THE LEVELING SYSTEM IS IN THE
TRAVEL MODE AND THE IGNITION IS ON.

IF THE YELLOW LEDS ARE WORKING BUT
NO RED LED IS COMING ON THERE IS A
PROBLEM WITH INPUT VOLTAGE IN THE
4-PIN CONNECTOR ON THE MIDDLE RING.

IF A YELLOW LED IS NOT LIT, THIS
INDICATES A PROBLEM WITH A MODULE.

MP85.060V

08SEP03

ELECTRICAL CONNECTION DIAGRAM

LED - FUSE LOCATION AND DESCRIPTION

CENTRAL CONTROL / AIRMODULE

LIFT

F1

TAG

FUSE

1
2

LEFT

REAR

RAISE

F2

LED

LOWER

F3

4
3657

REAR

LEFT

F4

REAR

RIGHT

RAISE

8

LOWER

F5

RIGHT

REAR

9

10

CN1/1 BLACK

RELAY DESCRIPTIONLED FUSE BLACK

1-YELLOW

4-YELLOW
5-YELLOW

8-YELLOW
9-YELLOW

12-YELLOW
14-YELLOW

15-YELLOW
17-YELLOW
19-YELLOW

20-RED F10-3 AMP PIN 8

TAG LIFT
TAG LIFT
LEFT REAR RAISE
LEFT REAR RAISE
LEFT REAR LOWER
LEFT REAR LOWER
RIGHT REAR RAISE
RIGHT REAR RAISE
RIGHT REAR LOWER
RIGHT REAR LOWER
COMPRESSOR
COMPRESSOR
LEFT TAG LOWER
LEFT TAG LOWER
RIGHT TAG LOWER
RIGHT TAG LOWER
TAG TRAVEL
TAG TRAVEL
TRAVEL - REAR MANIFOLD
TRAVEL - REAR MANIFOLD

F1-5 AMP2-RED PIN 1
F2-5 AMP3-RED PIN 2

F3-5 AMP6-RED PIN 3
F4-5 AMP7-RED PIN 4

F5-5 AMP10-RED PIN 5
F6-5 AMP11-RED NC

F7-5 AMP13-RED PIN 10

F8-5 AMP PIN 916-RED
F9-3 AMP18-RED PIN 7

NOTE: THE TWO TRAVEL RELAYS ARE WIRED AS
NORMALLY CLOSED RELAYS. WHEN THE YELLOW
LED (19) IS ON THE RELAY CONTACTS WILL OPEN.

THE RED LED (20) WILL NOT BE ON. THE RED LED
WILL BE ON IF THE LEVELING SYSTEM IS IN THE
TRAVEL MODE AND THE IGNITION IS ON.

AIR LEVEL OUTPUT BOARD

MANIF

F10

REAR

19
20

RESSOR

F6

COMP

12

11

LOWER

F7

TAG

14
13

LEFT

F8

RIGHT

TAG

LOWER

15
16

F9

TRAVEL

TAG

17
18

NOTE: FOR DETAILED INPUT / OUTPUT
INFORMATION ABOUT PIN CONNECTIONS
SEE ELECTRICAL CONNECTION DIAGRAM ­CENTRAL CONTROL / AIR MODULE
CONNECTION INFORMATION.

NOTE: A LIT YELLOW LED INDICATES THERE
IS A GROUND SIGNAL TO TURN THE
CORRESPONDING RELAY ON.

A LIT RED LED INDICATES THERE IS
VOLTAGE ON IT’S CORRESPONDING CN1 PIN.

IF A YELLOW LED IS LIT AND THE
CORRESPONDING RED LED IS OFF, EITHER
IT’S FUSE IS BLOWN OR THE RELAY IS BAD.

IF THE YELLOW LEDS ARE WORKING BUT
NO RED LED IS COMING ON THERE IS A
PROBLEM WITH INPUT VOLTAGE IN THE
4-PIN CONNECTOR ON THE TOP RING.

IF A YELLOW LED IS NOT LIT, THIS
INDICATES A PROBLEM WITH A MODULE.

TRAVEL

MP85.080V

12DEC03