ELECTRICAL SYSTEM
L3301, L3901, L4701, WSM
9-S39
[11] WARNING LAMP
Engine Oil Pressure Switch, Panel Board and Wiring Harness
1. Disconnect the lead (2) from the engine oil pressure switch after
turning the main switch "OFF".
2. Turn the main switch "ON" and connect a jumper lead from the
lead to the chassis.
3. If the engine oil pressure indicator lamp does not light, the panel
circuit or the wiring harness is damaged.
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Engine Oil Pressure Switch Continuity
1. Measure the resistance across the switch terminal and the
chassis.
2. If 0 ohm is not indicated in the normal state, the switch is
damaged.
3. If infinity is not indicated at pressure over 50 kPa (0.5 kgf/cm
2
,
7 psi), the switch is damaged.
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Charging Circuit (Panel Board and Wiring Harness)
1. Disconnect the 2P connector (2) from the alternator after turning
the main switch "OFF".
2. Turn the main switch "ON" and connect a jumper lead from the
wiring harness connector terminal (WR) to the chassis.
3. If the charge lamp does not light, the panel board circuit,
alternator, wiring harness or fuse is damaged.
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(1) Engine Oil Pressure Switch
(2) Switch Lead
(a) From Oil Pressure Lamp
Resistance
(Switch terminal –
Chassis)
In normal state 0 Ω
At pressure over
approx. 50 kPa
(0.5 kgf/cm
2
, 7 psi)
Infinity
(1) Engine Oil Pressure Switch
(1) Alternator
(2) 2P Connector
(a) From Charge Lamp
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