MI91.1255
10SEP07
625 TROUBLE SHOOTING STEPS
MANUAL OPERATION
SEE: MP85.184J
on the touch panel is not coming on.
a. The warning switch LED in the control box is coming on but the warning light
PART 11. A RED WARNING LIGHT ON THE TOUCH PANEL WILL NOT TURN ON WHEN IT’S
JACK IS EXTENDED 1/4 TO 1/2 INCH OR MORE.
1. Each jack has a two wire magnetic warning switch. The switch is located on top of the
jack. There is a magnet inside the jack. The contacts of the switch close when the jack
has extended approximately 1/4 to 1/2 inch. The contacts open when the jack is retracted.
The white wire in the harness supplies a ground to the switch and the black wire carries a
ground signal to the control box when the jack is extended and the switch contacts are
closed. There is a yellow LED in the control box for each warning switch input. A lit
yellow LED indicates the warning switch is on. The warning switch LEDs and inputs are:
LEFT FRONT ----- LED 21 ----- PIN 3 ----- WIRE 1000
RIGHT FRONT --- LED 22 ----- PIN 4 ----- WIRE 2000
RIGHT REAR ----- LED 23 ----- PIN 9 ----- WIRE 3000
LEFT REAR ------- LED 24 ----- PIN 10 --- WIRE 4000
The warning switch inputs are in the 12 pin gray connector on the back of the control box.
but could be the touch panel.
b. The warning switch LED in the control box is not coming on.
SEE: MP85.186E
connector from the back of the control box. Ground the appropriate pin in the box
connector. If the warning switch LED does not come on, replace the control box.
If the warning switch LED comes on, the problem is the wire harness or the jack
warning switch. Plug the 12 pin connector back into the control box.
c. If the problem is the wire harness or warning switch, unplug the warning switch at
the jack. Short the two pins in the harness plug together. If the warning switch LED
comes on, replace the warning switch. If the warning switch LED does not come on,
short the black warning switch wire in the harness to ground. If the warning switch
LED does not come on, the problem is the black wire or it’s connections. If the
warning switch LED comes on, the problem is the white ground wire.
SEE: MP85.186E
SEE: MP85.091C
1. The master "JACKS DOWN" warning light and buzzer are controlled by one wire from
the control box. If one works but the other does not, the problem would only be with the
component that is not working.
2. The LED 32 should be on if any warning switch LED is on.
a. If LED 32 is not on and any warning switch LED is on, replace the control box.
b. If LED 32 is on, unplug the 12 pin black connector from the control box and check
pin 11 for a ground. If a ground is not present, replace the control box.
c. If there is a ground on pin 11 in the 12 pin black
connector, the problem is the 7699 wire, the light,
SEE: MP85.184J
SEE: MP85.186E
SEE: MP85.186E & MP85.304R
PART 12. THE MASTER WARNING LIGHT AND BUZZER WILL NOT COME ON WHEN A
TOUCH PANEL WARNING LIGHT IS ON.
IS PUSHED, LED’s 7 AND 20 WILL TURN OFF. 5 SECONDS
A LIT RED LED INDICATES THERE IS
LATER LED’S 3 AND 19 WILL TURN OFF.
NOTE: THE TRAVEL RELAY IS WIRED AS A
NORMALLY CLOSED RELAY. WHEN THE YELLOW
LED (17) IS ON THE RELAY CONTACTS WILL OPEN.
THE RED LED (18) WILL NOT BE ON. THE RED LED
IT IS ONLY USED WITH PILOT OPERATED AIR DUMP
VEHICLES EQUIPPED WITH HWH AIR DUMP SYSTEMS.
NOTE: THE TRAVEL RELAY IS NOT USED ON
TRAVEL MODE AND THE IGNITION IS ON.
WILL BE ON IF THE LEVELING SYSTEM IS IN THE
MP85.184J
IF THE YELLOW LED’S ARE WORKING BUT
NO RED LED IS COMING ON THERE MAY BE
PROBLEM WITH INPUT VOLTAGE IN THE
IF A YELLOW LED IS NOT LIT, THERE IS A
PROBLEM WITH THE CONTROL BOX, TOUCH PANEL
VOLTAGE ON IT’S CORRESPONDING OUTPUT PIN.
CORRESPONDING RED LED IS OFF, EITHER
IT’S FUSE IS BLOWN OR THE RELAY IS BAD.
OR CONNECTION CABLE
4-PIN CONNECTOR.
IF A YELLOW LED IS LIT AND THE
SYSTEMS.
13AUG07
MP85.184J
PUSHED. TWO SECONDS AFTER THE "STORE" BUTTON
TOUCH PANEL IS ON UNLESS THE "STORE" BUTTON IS
LED’S 19 AND 20 (YELLOW) WILL BE ON WHENEVER THE
CONTROL BOX - LED - FUSE LOCATION AND DESCRIPTION
625 SERIES LEVELING SYSTEM
ELECTRICAL CONNECTION DIAGRAM
5-YELLOW
31
NOTE: A LIT YELLOW LED INDICATES THERE
IS A GROUND SIGNAL TO TURN THE
ELECTRICAL CONNECTION DIAGRAM - CONTROL
INFORMATION ABOUT PIN CONNECTIONS SEE
NOTE: FOR DETAILED INPUT / OUTPUT
PIN 1
27
CORRESPONDING RELAY ON.
BOX CONNECTION INFORMATION.
LEFT SIDE
GROUND
+12V
REAR
FRONT
RIGHT SIDE
28
39
SENSING UNIT
FUSE
LED
DUMP
12
11
25
24
26
21
23
22
29 30
RELAY
RELAY
MASTER
F7
F6
14
13
PUMP
TRAVEL
17
18
15
16
F8
38
36
37
38-RED
39-RED
37-RED
34-RED
36-RED
35-RED
33-GREEN
31-GREEN
30-YELLOW
32-RED
29-RED
28-RED
27-RED
35
32
34
33
F10
F9
17-YELLOW
24-YELLOW
25-RED
26-RED
23-YELLOW
22-YELLOW
21-YELLOW
20-YELLOW
19-YELLOW
18-RED
PF4
PF3
14-RED
15-YELLOW
16-RED
13-YELLOW
11-YELLOW
7-YELLOW
12-RED
8-RED
6-RED
LEFT
RIGHT
1
2
REAR
F2
3
4
F1
REAR
LEFT
CRX2
FRONT
19
RIGHT
FRONT
7
8
5
6
F3
CRX1
F4
20
2-RED
3-YELLOW
4-RED
1-YELLOW
LED
RIGHT FRONT COIL
F7 - 5 AMP
F9 - 5 AMP
F8 - 5 AMP
F10 - 10 AMP
F6 - 5 AMP
F4 - 15 AMP
F3 - 15 AMP
JACK INTERRUPT
MASTER WARNING
ACCESSORY OUT FOR
RIGHT REAR PRESS SW
50 LB PRESS SW INPUT
MASTER WARN CONTROL
3000 LB PRESS SW INPUT
LEFT REAR PRESS SW
LINK LIGHT
ACCESSORY IN
BOARD ENABLE
PARK BRAKE
NOT USED
NOT USED
PF4
MASTER RELAY OUTPUT
LEFT FRONT PRESS SW
LEFT REAR WARN SW
RIGHT REAR WARN SW
RIGHT FRONT WARN SW
LEFT FRONT WARN SW
RIGHT FRONT PRESS SW
LEFT FRONT COIL
MASTER RELAY COIL
LEFT FRONT OUTPUT
RIGHT FRONT OUTPUT
TRAVEL COIL
TRAVEL OUTPUT
CRX 2
CRX 1
PUMP COIL
PUMP OUTPUT
DUMP OUTPUT
DUMP COIL
FUSE
F1 - 15 AMP
F2 - 15 AMP
RIGHT REAR COIL
RIGHT REAR OUTPUT
RELAY DESCRIPTION
LEFT REAR OUTPUT
LEFT REAR COIL
MP85.091C
STUD
WARNING
SWITCH
PILOT AIR DUMP
6235
LEFT REAR
4000
4200
9300
6231
6230
9301
PRESSURE
SWITCH
A
B
CONNECTION
C
A
B
6231
9300
9301
6230
RIGHT REAR
MP85.091C
08AUG07
3000
6235
3200
PRESSURE
SWITCH
SWITCH
WARNING
A
B
ELECTRICAL CONNECTION DIAGRAM
625 SERIES SINGLE STEP LEVELING SYSTEM
TOUCH PANEL - JACK WARNING LIGHTS AND PRESSURE SWITCHES
PILOT AIR DUMP - PARK BRAKE - MASTER WARNING LIGHT AND BUZZER
WARNING
SWITCH
PRESSURE
6111
BUZZER
TO HWH
GROUND
6111
PARK BRAKE
SWITCH
DIODE
7699
DIODE
+
7699
7699
WARNING
MASTER
LIGHT
LEFT FRONT
6110
5AMP
FUSE
1200
SWITCH
1000
A
B
6235
9001 - TO
PARK BRAKE
LIGHT
9000
_
9000
7699
NOT IN
TRAVEL
BRAKE
SLOPE
EXCESS
HWH COMPUTERIZED LEVELING
TOUCH PANEL
CAUTION!
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
TO IGNITION
TO ACCESSORY
6120
AUTO
LEVEL
STORE
AUTO
EMERGENCY
STOP
MODE
PARK/
R
RETRACT
EXTEND
MANUAL
RETRACT
EXTEND
RIGHT FRONT
PILOT DUMP
CONNECTION
DIAGRAM - 625 SERIES
MANIFOLD - PUMP AND
MASTER RELAYS
LEVELING SYSTEM - LEVELING
GRAY
4 PIN
12 PIN
BLACK
8 PIN
12 PIN
BLACK
BROWN
12 PIN
GREEN
12 PIN
GRAY
PRESSURE
SWITCH
6235
SEE ELECTRICAL CONNECTION
6230 - 6231
9301
9300
WARNING
SWITCH
2000
2200
BY OEM
A
B
2400
10
BLACK
SW12 FOR RIGHT FRONT SOLENOID VALVE
SWITCHED GROUND FROM RIGHT FRONT WARNING SWITCH
SWITCHED GROUND FROM LEFT FRONT WARNING SWITCH
SWITCHED GROUND FROM LEFT FRONT PRESSURE SWITCH
SWITCHED GROUND FROM RIGHT FRONT PRESSURE SWITCH
SWITCHED GROUND FROM RIGHT REAR PRESSURE SWITCH
SWITCHED GROUND FROM LEFT REAR WARNING SWITCH
SWITCHED GROUND FROM RIGHT REAR WARNING SWITCH
SHARED GROUND FOR WARNING SWITCHES
PUMP RELAY CONTROL - SW12
+12 ACCESSORY / IGNITION
SWITCHED GROUND FROM PARK BRAKE SWITCH
BUZZER & MASTER WARNING LIGHT CONTROL - SWITCHED GROUND
SWITCHED GROUND FROM LEFT REAR PRESSURE SWITCH
MP85.186E
9300
8600
9000
6230
6800
6120
7699
2000
1000
1200
2200
3200
3000
4000
6235
4200
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
WHITE
BLACK
MP85.6031
4
5
6
7
8
9
10
11
12
BLACK
12 PIN GRAY CONNECTOR
BLACK
GREEN
WHITE
8 PIN BLACK CONNECTOR
12 PIN BLACK CONNECTOR
BLACK
BLACK
YELLOW
BLACK
1 AND 2
1 AND 2
4
3
5
7
6
8
3
RED
RED
1 THRU 6
8 THRU 10
11
12
7
12
11
NO CONNECTION
CAN LOW
CAN SHIELD
CAN HIGH
SW12 FOR DUMP
SWITCHED BATTERY
NO CONNECTION
NO CONNECTION
NO CONNECTION
NO CONNECTION
NO CONNECTION
GROUND
13AUG07
MP85.186E
PIN 1
PIN 12
WIRE DESCRIPTION AND FUNCTION
ELECTRICAL CONNECTION DIAGRAM
CONTROL BOX CONNECTION INFORMATION
625 SERIES LEVELING SYSTEM
MASTER RELAY CONTROL - SW12
3000 LB PRESSURE SWITCH - SWITCHED GROUND
50 LB PRESSURE SWITCH - SWITCHED GROUND
SW12 FOR TRAVEL
SW12 FOR LEFT FRONT SOLENOID VALVE
GROUND FOR RIGHT FRONT SOLENOID VALVE
GROUND FOR RIGHT REAR SOLENOID VALVE
SW12 FOR LEFT REAR SOLENOID VALVE
SW12 FOR RIGHT REAR SOLENOID VALVE
SW12V BATTERY POWER FROM MASTER RELAY
SW12V BATTERY POWER FROM MASTER RELAY
GROUND FROM HWH GROUND STUD
+12 BATTERY FROM MASTER RELAY
PIN 1
PIN 4
WIRE
PIN 8
PIN 1
6800
6100
6230
6800
8100
8101
1400
8500
9301
NUMBER
PIN 12
PIN 1
7601
3400
4400
7600
COLOR
WIRE
BLACK
BLACK
BLACK
12 PIN BROWN CONNECTOR
4 PIN GRAY CONNECTOR
WHITE
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
1
4
2
3
5
9
7
8
6
PIN #
1
2
3
4
RED
GRAY
4 PIN
12 PIN
BLACK
BLACK
12 PIN
8 PIN
BROWN
PIN 1
PIN 12
GRAY
12 PIN
SWITCHED GROUND FROM LEFT REAR WARNING SWITCH
SWITCHED GROUND FROM RIGHT REAR WARNING SWITCH
SHARED GROUND FOR WARNING SWITCHES
SWITCHED GROUND FROM LEFT REAR PRESSURE SWITCH
MP85.186E
SW12 FOR TRAVEL
+12 ACCESSORY / IGNITION
SW12 FOR RIGHT FRONT SOLENOID VALVE
SWITCHED GROUND FROM RIGHT FRONT WARNING SWITCH
SWITCHED GROUND FROM LEFT FRONT WARNING SWITCH
SWITCHED GROUND FROM LEFT FRONT PRESSURE SWITCH
SWITCHED GROUND FROM RIGHT FRONT PRESSURE SWITCH
SWITCHED GROUND FROM RIGHT REAR PRESSURE SWITCH
PUMP RELAY CONTROL - SW12
SWITCHED GROUND FROM PARK BRAKE SWITCH
BUZZER & MASTER WARNING LIGHT CONTROL - SWITCHED GROUND
MASTER RELAY CONTROL - SW12
3000 LB PRESSURE SWITCH - SWITCHED GROUND
50 LB PRESSURE SWITCH - SWITCHED GROUND
SW12 FOR LEFT FRONT SOLENOID VALVE
GROUND FOR RIGHT FRONT SOLENOID VALVE
GROUND FOR RIGHT REAR SOLENOID VALVE
SW12 FOR LEFT REAR SOLENOID VALVE
SW12 FOR RIGHT REAR SOLENOID VALVE
SW12V BATTERY POWER FROM MASTER RELAY
SW12V BATTERY POWER FROM MASTER RELAY
GROUND FROM HWH GROUND STUD
+12 BATTERY FROM MASTER RELAY
3000
4000
6235
BLACK
BLACK
WHITE
MP85.6031
9
10
11
12
NO CONNECTION
6800
6100
6230
6800
8100
8101
8500
2400
9300
8600
1400
7601
3400
4400
7600
9301
9000
6230
6800
7699
4200
2000
1000
1200
2200
3200
6120
7
BLACK
WHITE
BLACK
8 PIN BLACK CONNECTOR
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
GREEN
YELLOW
12 PIN GRAY CONNECTOR
1 AND 2
4
5
6
7
8
3
8
7
1 AND 2
8 THRU 10
4
3
12
11
6
5
RED
RED
BLACK
BLACK
WHITE
BLACK
BLACK
BLACK
12 PIN BROWN CONNECTOR
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
12 PIN BLACK CONNECTOR
5
1 THRU 6
9
7
8
6
10
11
12
1
2
3
1
2
3
4
4
RED
SWITCHED BATTERY
NO CONNECTION
NO CONNECTION
NO CONNECTION
CAN LOW
CAN HIGH
NO CONNECTION
CAN SHIELD
GROUND
NO CONNECTION
SW12 FOR DUMP
13AUG07
MP85.186E
ELECTRICAL CONNECTION DIAGRAM
CONTROL BOX CONNECTION INFORMATION
625 SERIES LEVELING SYSTEM
PIN 1
PIN 12
WIRE DESCRIPTION AND FUNCTION
PIN 1
PIN 4
WIRE
PIN 8
PIN 1
PIN 12
NUMBER
PIN 1
4 PIN GRAY CONNECTOR
COLOR
WIRE
PIN #
4 PIN
GRAY
BLACK
8 PIN
BLACK
12 PIN
12 PIN
BROWN
PIN 1
PIN 12
GRAY
12 PIN
THE NEGATIVE SIGNAL FOR THE WARNING INDICATORS MUST ALWAYS COME FROM THE CONTROL BOX.
CONTROL BOX, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING.
NOTE: BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE
STRAIGHT-ACTING JACKS A WARNING BUZZER MUST BE USED.
A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS
FUSE HOLDER - 6121
MP85.304R
CONTROL
BUZZER
CONTROL
WARN LIGHT
7699
LIGHT
DOWN
6111
6111
7699
PIGTAIL PROVIDED - 7699
+
_
BUZZER
7699
625 SERIES LEVELING SYSTEM
MANUAL LEVELING SYSTEMS
MASTER LIGHT/BUZZER CONNECTION DIAGRAM
+12 VOLT IGNITION "ON" POWER
CONNECT THIS END TO
5-15 AMP FUSE
JACK
IGNITION
PIGTAIL W/DIODE
AND IN-LINE
INFORMATION
CONNECTION
SEE CONTROL BOX
the buzzer, their connections or the ignition power
to the light and buzzer.
The problem is most likely the control box
Unplug the 12 pin
