U20-3, U25-3 WSM Electrical system (Mechanism section)
V-M-9
e. Engine oil pressure sensor circuit
1. Engine oil pressure sensor is N.C.(Normal close) type.
2. Check relay is N.O.(Normal open) type.
3. Meter panel (Big): (1) Engine oil pressure line. (3) Charge line
(2) Battery IG(+) (4) Check relay line
Oil switch
1. Code No, :15531-39011
2. DC12V
3. Warning lamp :SW
4. Operating pressure :0.5 ± 0.1 kgf/cm
2
5. Insulation resistance :3MΩ or more
(1) In normal condition
When the engine lube oil pressure goes up, the
contact of oil switch 6 opens to turn off the lamp.
(2) In trouble
When the above pressure comes down, the con-
tact of oil switch 6 closes to turn on the lamp.
Operating pressure of oil switch
······Ref. value : 0.5 kgf/cm
2
, 7.1 psi, 0.05 MPa
(1) Terminal (5) Contact rivet
(2) Insulator (6) Contact
(3) Spring (7) Body
(4) Rubber
2
1
4
8
ACST
B
OFF
10A
Check relay
N.O.
Altrenal
Regular
Meter Panel
(Big)
N.c.Charge
lamp
Check
lamp
Oil pressure
lamp
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(1) In normal
(2) In trouble
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