SERVICE MANUAL
TIREBOSS
TM
Tire Pressure Control
1-9
f:tec\manuals\Service\SERVICEv5.indd - V6-0615
VALVE CIRCUIT BOARD (#1393-02)
INDICATOR LIGHT DESCRIPTIONS
12v / 24v VDC REMOTE
ALARM POSITIVE SUPPLY
INF. DEF.
AXLE GROUP 1
INF. DEF.
AXLE GROUP 2
INF. DEF.
AXLE GROUP 3
- 10 -
+VBAT-VBAT
AXLE 1
AXLE 2
AXLE 3
J7
VALVE CONTROL
MODULE CIRCUIT
BOARD
12/24v
Jumper
(blue)
24v 12v
ELTEK 1393-02
Valve
Body
Heater
Fuse
Steer
Drive
Trailer
RED
F2
J2
3CR
Control
Relay
J3
F4
F8
F6
F7
F5
F9
1CR
The LED indicator lights on the valve circuit board may assist in trouble shooting and/or diagnosing of the electronic circuits.
When the TIREBOSS system is operating and communicating correctly, the LED indicator lights will illuminate as follows...
*Key OFF - LED L2 and LED L4 illuminated solid green (with main power available at +V Bat)
*Key ON - All LED’s illuminated solid green and LED L3 fl ashing RED
*(If equipped, POWER DISCONNECT SWITCH must be ON)
If an LED light illuminates dim, fl ickers or does not come on as described above,
a fault with that electronic circuit may be present.
The diagram below indicates the electronic circuit for each LED.
In the event of a faulty circuit, a fault may
exist in the following areas...
-low battery power supply
-replaceable fuses (heater, battery or ignition fuse)
-poor terminal connection/s
-valve circuit board or OCU circuit board
-abraded wires
L1 L2 L3 L4 L9L5 L6 L7 L8 L10
Valve Control Module (+12V/+24V)
Cab Control Module Power Supply (F1)
Cab Control/Valve Control Communication Indicator
Valve Control Module +5V Power Supply (F3)
Valve Heater Supply (F2)
Brake Pressure Sw./Suspension System Pressure Sw. Supply (F4)
Valve Solenoid Supply - Axle1 (F5)
Valve Solenoid Supply - Axle2 (F6)
Valve Solenoid Supply - Axle3 (F7)
Remote Alarm Relay (2CR) and Valve Heater Relay (3CR) Supply (F8)
GGRGG GGG G G
2CR
Control
Relay
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