ELECTRICAL SYSTEM
M8540Narrow, M9540Narrow, WSM
N9-S10
Connector (40P) of Wire Harness Side
Terminal
No.
Color
of
wiring
Terminal Name Measuring across T40 (Ground) Condition
T1 SB Heater relay Battery voltage Main switch at ON
T2 G/Or 4WD/Bi-speed relay Battery voltage
Main switch at ON and 4WD switch
at 4WD position
T3 Br/R Engine stop relay Battery voltage Main switch at ON
T4 L/B OPC buzzer Battery voltage Main switch at ON
T5
T6
T7
T8
T9
T10 LG/B PTO/Hour meter select switch Battery voltage
Main switch at ON and PTO/Hour
meter select switch ON
T11 L Traveling speed select switch Battery voltage
Main switch at ON and traveling
speed select switch ON
T12 R/B Turn signal switch (R.H.) Battery voltage and 0 V (alternately)
Main switch at ON and turn signal
switch (R.H.) ON
T13 P/W
PTO switch
Ground PTO switch (ITA Model)
Battery voltage
Main switch at ON and PTO switch /
ground PTO switch (ITA Model) OFF
T14 L/G Trailer indicator Battery voltage
Main switch at ON and turn the turn
signal switch under the trailer coupler
has connected
T15 B/R High beam Battery voltage
Main switch at ON and head light
switch at high beam position
T16 G/B Turn signal switch (L.H.) Battery voltage and 0 V (alternately)
Main switch at ON and turn signal
switch (L.H.) ON
T17 W/R Coolant temperature switch
Approx. 117 Ω at 120 °C (248 °F) to
5.88 kΩ at 0 °C (32 °F)
Main switch at OFF
T18 Y Fuel unit sensor Approx. 3.0 (F) to 112 Ω (E) Main switch at OFF
T19 V/W PTO change switch Battery voltage
Main switch at ON and PTO speed
lever shifted at 540E position
T20 B/W GND (analogue)
T21 G/W Illumination light Battery voltage
Main switch at ON and head light
switch ON
T22
T23
T24 B/W Main switch (start position) Battery voltage Main switch at START
T25 L/Y Seat switch Battery voltage Main switch at ON
T26 G/W Turning angle inspection switch Battery voltage
Main switch at ON and turning angle
inspection switch ON
T27 P Parking brake switch Battery voltage
Main switch at ON and parking brake
switch at ON
T28 Br/Y Air cleaner switch Battery voltage
Main switch at ON and air cleaner
switch at ON
T29 W/G 4WD Switch Battery voltage
Main switch at ON and 4WD switch
at ON
T30 R Bi-speed turn switch Battery voltage
Main switch at ON and
4WD/Bi-speed switch at Bi-speed
turn position
T31
T32 W Engine oil pressure switch
0 Ω At engine not run
Infinity At engine run
T33 W/G Alternator terminal L Approx. 10 V At engine run
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