GROUP 2 FUEL WARMER SYSTEM

1. SPECIFICATION
1) Operating voltage : 24±4V
2) Power : 350±50W
3) Current : 15A
2. OPERATION
1) The current of fuel warmer system is automatically Fuel warmer
controlled without thermostat according to fuel
temperature.
2) At the first state, the 15A current flows to the fuel
warmer and engine may be started in 1~2
Prefilter
minutes.
3) If the fuel starts to flow, ceramic-disk in the fuel
warmer heater senses the fuel temperature to
reduce the current as low as 1.5A.
So, fuel is protected from overheating by this
2507A5MS12
mechanism.
3. ELECTRIC CIRCUIT

CS-74
CN-1 CN-60
34 3R 1 5R
1 2
33 5W
2 1

MASTER SW

CN-95
2 5W
2
69 5W
1
FUSIBLE LINK
CR-1

BATTERY
BATTERY RY

TO STARTER

MCU
15 MECHANICAL ENG(GND)
11

20

21

22

23

24

25

26

27

28
10

12

13

14

15

16

17

18

19
1

3 REVERSE FAN SOL

REVERSE FAN SIG
8 PROGRAM DUMP
NEUTRAL RY/J/STICK F/R 10A
30A

EM'CY STEER/RIDE CON. 20A

30A

20A
BEACON/RR WORK LAMP 20A
20A

20A

10A

CIGARLIGHTER/MIRROR 20A
30A

20A

20A
30A

30A

10A

10A

10A

10A
10A
30A

10A

10A

10A
10A
5A

5A

5A

23 STOP LAMP PS

17 POWER IG(NC)
16 POWER IG(NC)

2 FUEL HEATER
19 HOUR METER
18 BATTERY 24V

10 OPTION PS 2
9 OPTION PS 1
CASSETTE/RM LAMP

ILLUMINATION LAMP
ILLUMINATION LAMP
FRONT WORK LAMP
HORN/CONVERTER

7 RS232 RX
6 RS232 TX
BACK.STOP LAMP

AIR-CON/HEATER

AIR-CON/HEATER

14 OPTION
13 OPTION
12 OPTION
11 OPTION
22 OTMP1
21 ODP2
20 ODP1
CLUSTER/MCU

5 GND
4 Gr PRE-HEATER

1 NC
TURN LAMP
HEAD LAMP

21 3Or START KEY

CASSETTE

CN-59
CLUSTER
ILL.LAMP

SWITCH
CN-36

WIPER

4
ECM

MCU
23 3W ECM

RCV
TCU

TCU

143 BOr

27 RW
MCU IG 24V

CN-13
1
CN-3 2
CR-35
1 3
86 30 87a 149 LW 16 LW LW 23
B G14 2 4 CN-96
85 16A LW LW 23A 23 LW
3Br 31 3 5 1
87 G2 B
G 65A 4 6 2
86
85 87 87a 3Or 21 5 7 3
30
6 8 4
POWER RY
7 9
CR-25 FUEL WARMER
8 10
86 3087a
B G15 9 11
85
3Y 32 10 12
87
G 65 11 CN-12
85 87 87a 86 Or 21A 12 12 CN-94
30 13A W
13 13 4 BATT (+)
ECM POWER RY W 15 13 13E W
14 14 3 BATT (+)
15 15 B
15 2 BATT (-)
LW 149
BOr 143

16 B
Gr 4A
Gr 4E
H BR ACC ST C

6
CS-2 1 BATT (-)
Gr 4

5
6 ECM EARTH
3 5 (BATTERY(-) TERMINAL)
CR-46

CR-36

87

2
30
87a
85

86
87

30
87a
85

85 8787a 86

4
B

1
G 65
4 3
85 8787a
0, I

2
H 0 I II

86 30

86 30

Or 21E
1

START SWITCH FUEL WARMER RY PREHEAT RY

7407AEL08

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