Measuring The Voltage Of The Engine Stop; Glow Relay; Measuring The Voltage Of The Glow Relay - Kubota U20-3 Workshop Manual

U20-3, U25-3 WSM
Fig.11
Fig.12
Fig.13
Fig.14
[8] Engine stop solenoid

1. Measuring the voltage of the engine stop

solenoid (Fig.11)
2 Disconnect the engine stop solenoid
coupler CN36.
2 Measure the voltage between the coupler
CN36-(1) or (2) and the body earth.
12 V
Other than 12 V : Check for continuity.
2. Continuity check (Fig.12)
2 Key switch: OFF
2 Disconnect the coupler.
(1)Check for continuity between the solenoid
coupler CN36-(1) and relay coupler CN339-
(2).
(2)Check for continuity between the solenoid
coupler CN36-(2) and relay coupler CN339-
(2).
(3)Check for continuity between the 10A fuse
and relay coupler CN338-(2).

[9] Glow relay

1. Checking the operation of the glow relay
(Fig.13)
(1)Lightly touch the glow relay with your hand.
(2)Key switch: ON
(3)Check if the glow relay operates with a
click.
Clicking
Not clicking : Measure the voltage, check

2. Measuring the voltage of the glow relay

coupler (Fig.14)
2 Disconnect the glow relay coupler CN17.
2 Key switch: ON
2 Measure the voltage between (1) and (2)
and between (3) and (4) of the coupler
CN17.
12 V for both (1) and (2) : The glow relay is
Other than 12 V
V-S-18
Electrical system (Service section)
: The stop solenoid is
faulty.
(Fig.12)
: The glow relay is normal.
Check the glow plug voltage.
for continuity and inspect the
glow relay (Fig.17).
faulty.
: The harness is
broken.