Glow Plug Harness; Alternator; Speed Switch - Kubota D1503-M Workshop Manual

03-M-E3B, 03-M-DI-E3B, 03-M-E3BG WSM

Glow Plug Harness

1. Disconnect the glow plug terminal (1).
2. Check the state of the harness and if it is abnormal, please
replace it.
3. Turn the key switch to the ACC position.
4. Measure the voltage between the glow pulg terminal (1) of the
connector (harness side) and chassis.
5. When the measurements are the below table value.
The ECU is normal. Some of the glow plugs are failure, then
please replace them.
6. When the measurements are out of the below table value.
The ECU is failure, then please replace it.
Voltage Terminal - Chassis
(1) Glow Plug Terminal

Alternator

1. Disconnect the terminal L (2) of the alternator (2P).
2. Check the state of the harness and if it is abnormal, please
replace it.
3. Measure the resistance between the terminal L (2) of the
connector (harness side) and chassis.
4. When the measurements are the below table value.
The ECU is normal. The alternator is failure, then please replace
it.
5. When the measurements are out of the below table value.
The ECU is failure, then please replace it.
Resistance Terminal L - Chassis
(1) Alternator

Speed Switch

1. Check the state of the harness and if it is abnormal, please
replace it.
2. When the speed switch is turned ON and OFF, measure the
resistance between the speed switch (terminal side) (1) of it each
time.
3. When the measurements are the below table value.
The speed switch is normal. The ECU is failure, then please
replace it.
4. When the measurements are out of the below table value.
The speed switch is failure, then please replace it.
ON
Resistance
OFF
(1) Speed Switch
(Terminal Side)
S-44
DIESEL ENGINE
12 V
W1061770
Infinity
(2) Terminal L (Harness Side)
W1063000
0 Ω
Infinity
(A) Single Pole, Single Throw
(B) Single Pole, Double Throw
W1063856
KiSC issued 07, 2008 A