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MEASURING ELECTRICAL DEVICE First Edition ：10/2006
Electric Circuits SH700
MEASURING ELECTRICAL DEVICE
MEASURING ELECTRICAL DEVICE
Instruments to be Measured
[1] Electromagnetic proportional valve of hydraulic [8] Electromagnetic proportional valve of control-
pump ling fan speed
[2] Solenoid valve [9] Fan reversing solenoid valve
[3] Oil temperature sensor [10] Glow
[4] Pressure sensor [11] Fuel pump
[5] Fuel sensor [12] EGR
[6] Atmosphenic pressure sensor [13] Injector
[7] Intake air temperature sensor [14] In addition, a sensor with engine
Equipment for Measuring
[1] Tester
[2] Service connector Kit
Common kit Part No. for 1 to 3 type:KG0HP202-00
No. Part No. Old Part No. QTY Description -1/-2 -3 -3B
series series series
1 KHP11810 WDB0055-1 1 for throttole motor (12 pins) z - -
2 KHP11820 WDB0055-2 1 for throttole motor (12 pins) <Main harness side> z - -
3 KHP11830 WDB0055-3 1 for stop motor (6 pins) z z -
4 KHP11840 WDB0055-4 1 for stop motor (6 pins) <Main harness side> z z -
5 KHP11850 WDB0055-5 1 for solenoid valve (2 pins) z z z
for electromagnetic proportional valve of hydrau-
6 KHP11860 WDB0055-6 1 z z z
lic pump (2 pins) <Main harness side>
for electromagnetic proportional valve of hydrau-
7 KHP11870 WDB0055-7 1 z z z
lic pump (2 pins)
8 KHP11880 WDB0055-8 1 for pressure switch (2 pins) z z z
9 KHP11890 WDB0055-9 1 for pressure switch (2 pins) <Main harness side> z z z
10 KHP11900 WDB0055-10 1 for receiver dryer (2 pins) z z z
11 KHP11910 WDB0055-11 1 for oil filter switch (1 pin) z - -
12 KHP11920 WDB0055-12 1 for oil filter switch (1 pin) <Main harness side> z - -
13 KHP1576 - 1 for back up sensor (2 pins) 130 to 290 - z -
14 KHP1732 - 1 for back up sensor (2 pins) 330 to 460 - z -
15 KHP11930 - 1 for back up sensor (3 pins) 800 - z -
16 KHP1578 - 1 for GT model -Governor A (only for SCMM) - - -
17 KHP1579 - 1 for GT model -Governor B (only for SCMM) - - -
18 KHP1580 - 1 for GT model -Governor C (only for SCMM) - - -
19 KHP1575 - 1 for oil/coolant temperature sensors (2 pins) - z z
20 KHP1577 - 1 for pressure sensor (3 pins) - z z
21 KHP11020 - 1 for atmosphenic pressure sensor (3 pins) - - z
22 KHP11030 - 1 for intake air temperature sensor (2 pins) - - z
23 KHP11060 - 1 for glow (1 pin) - - z
24 KHP11070 - 1 for fuel pump (6 pins) - - z
25 KHP11080 - 1 for EGR (8 pins) - - z
26 KHP11090 - 1 for injector (12 pins) - - z
27 KHP11100 - 1 for sensor (20 pins) - - z
28 KHP11970 - 1 for breaker from ECM to main harness Assy - - z
for electromagnetic proportional valve of controlling
29 KHP11040 - 1 - - z
fan speed (2 pins) 460 to 800
30 KHP11050 - 1 for fan reversing solenoid valve (2 pins) 460 to 800 - - z
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Kit Part No. for 3B addition:KG0HP203-00
No. Part No. QTY Description -1/-2 -3 -3B
series series series
1 KHP11020 1 for atmosphenic pressure sensor (3 pins) - - z
2 KHP11030 1 for intake air temperature sensor (2 pins) - - z
3 KHP11060 1 for glow (1 pin) - - z
4 KHP11070 1 for fuel pump (6 pins) - - z
5 KHP11080 1 for EGR (8 pins) - - z
6 KHP11090 1 for injector (12 pins) - - z
7 KHP11100 1 for sensor (20 pins) - - z
8 KHP11970 1 for breaker from ECM to main harness Assy - - z
for electromagnetic proportional valve of controlling
9 KHP11040 1 - - z
fan speed (2 pins) 460 to 800
10 KHP11050 1 for fan reversing solenoid valve (2 pins) 460 to 800 - - z
[3] Service connector
1) For solenoide valve
Part No. :KHP11850
Old Part No. :WDB0055-5
• Solenoid valve
• Fuel sensor
BrG
100
BrG BrB
100 150
50
100 101
150 BrB
101
2) For electromagnetic proportional valve of hydraulic pump (Main harness side)
Part No. :KHP11860
Old Part No. :WDB0055-6
BrB
102
BrB BrG
100 150
50
102 103
150 BrG
103
3) For electromagnetic proportional valve of hydraulic pump
Part No. :KHP11870
Old Part No. :WDB0055-7
BrG
104
BrG BrB
100 150
50
104 105
150 BrB
105
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4) For pressure switch
Part No. :KHP11880
Old Part No. :WDB0055-8
L
106
L BY
100 150
50
106 107
150 BY
107
5) For pressure switch (Main harness side)
Part No. :KHP11890
Old Part No. :WDB0055-9
BY
108
BY L
100 150
50
108 109
150 L
109
6) For receiver dryer
Part No. :KHP11900
Old Part No. :WDB0055-10
G
814
G G
100 150
50
814 850
150 G
850
7) For oil temperature sensor
Part No. :KHP1575
0.85BP
01A
0.85PL 0.85BP 50
50 150
02A 01A
50
02A
0.85PL
8) For pressure sensor
Part No. :KHP1577
0.85 0.85
02A 01A 200 0.85BW
WY BW 50 50
01A
0.85
WL 03A 50
50
0.85WY
50
02A
0.85 0.85
BW WY 01B 02B
0.85
WL 03B 03A
0.85WL
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9) For atmosphenic pressure sensor
Part No. :KHP11020
200 0.85YL
50 50
01A 02A 03A 01A
50
0.85 0.85 0.85
50
50
YL BY Y
0.85BY
02A
03B 02B 01B
0.85 0.85 0.85 03A
Y BY YL 0.85Y
10) For intake air temperature sensor
Part No. :KHP11030
0.85BO
01A
50
300
50
01A 02A
50
0.85BO 0.85OL
02A
0.85OL
11)For glow
Part No. :KHP11060
3B
01A
6
50
50 200
3B 01A
50
50
6
02A
3LR 02A 3LR
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12) For fuel pump
Part No. :KHP11070
13)For EGR
Part No. :KHP11080
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14) For injector
Part No. :KHP11090
15)For sensor
Part No. :KHP11100
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16) For breaker from ECM to main harness Assy
Part No. :KHP11970
This kit consists of the following parts.
Part No. Part Name QTY
KHP11980 For ECM-terminal 1
KHP11990 For Main-terminal 1
KHP12000 For Joint-terminal 3
16-1. For ECM-terminal
Part No. :KHP11980
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16-2. For Main-terminal
Part No. :KHP11990
16-3. For Joint-terminal
Part No. :KHP12000
1.250 1.250
150
50 50
001 001
50
1.250
002
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17) For electromagnetic proportional valve of controlling fan speed
Part No. :KHP11040
1.25YG
01A
50
50 600
1.25 1.25
YG BY 01A 02A
50
50
01B
1.25 1.25 02A 01B
BY Y 1.25Y
18)For fan reversing solenoid valve
Part No. :KHP11050
1.25RW
01A
50
50 800
01A 02A
50
1.25RW 1.25B
02A
1.25B
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Measuring Methods
1. Electromagnetic Proportional Valve of Hydraulic pump
Connector
• Remove the connector on the electromagnetic
proportional valve that is attached to the hydraulic
pump.
• Connect service connector 2P on the connector
that was just removed.
• Do not let the plug terminals cross at this point.
• Ensure the Brown/Black harness from the cab side
is selected (the service connector side has the
same colors).
Connect tester's red terminal to the cab side, and
the black terminal to the hydraulic pump side.
• When connected properly, start the engine and
check the current value of each mode at maximum
speed.
Carrent value for each mode unit : mA
H S Auto
Mode L
MAX MIN MAX MIN S L
Current value 490 240 405 240 Below 50 490 490
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2. Solenoid Valve (6-way)
• Remove a connector that is attached to the solenoid
valve.
(The procedures here are given for lever lock sole-
noid.)
Connector
• There are 6-way solenoid valves. Refer to the illustra-
tion on the left for intended use for each valve (viewed
from the front).
Connectors have strips with different colors on them.
Be aware of the color-coded functions when measur-
ing the device.
• Connect service connector 2P on the connector that
was just removed (solenoid valve side only).
• Connect the red and black terminals to the plug termi-
nal of service connector.
• When connected properly, check the resistance.
Resistance 45 Ω (at 20°C)
Note:
There will be slight variations in resistance depending
on the temperature.
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3. Oil Temperature Sensor
Oil temperature sensor
• Connect service connector 2P on the sensor that was
just uninstalled.
• Connect the red and black terminals to the plug termi-
nal of service connector.
• When connected properly, gradually increase the
temperature and check the resistance.
Temprature versus resistance Unit : kΩ
Oil temperature Oil temperature sensor
20 °C 2.45
30 °C 1.66
40 °C 1.15
50 °C 0.81
60 °C 0.58
70 °C 0.43
80 °C 0.32
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4. Pressure Sensor
• Remove the connector on pressure sensor that is attached to the hydraulic pump.
Pressure sensor: P2
Pressure sensor: P1
Pressure sensor: N1
• Connect service connector 3P on the connector that
was just removed.
• Connect the red terminal to the plug terminal WY
(White/Yelow) of service connector. Ground the black
terminal.
• When connected properly, turn the key switch ON
and check the voltage.
Refer to the engine troubleshooting mamual for the quality judging of the sensor by the engine side.
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Voltage of pressure sensor
Pressure and Voltage
(1)Pressure sensor for P 1, P 2
Formula for converting pressure: Pressure MPa Voltage (V)
1 MPa = 1.019 x 10 kgf/cm2 50 4.5
Example: 30 MPa = 30 x 1.019 x 10
= 305.7 kgf/cm2 43.7 4
2 MPa = 2 x 1.019 x 10 37.5 3
= 20.38 kgf/cm2
25.0 2
17.5 1
0 0.5
(2)Pressure sensor for negative control
Pressure MPa Voltage (V)
5.0 4.5
4.37 4
3.75 3
2.5 2
1.25 1
0 0.5
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