ELECTRICAL SYSTEM
B2420, WSM
9-S12
(4) Glow Plug
Lead Terminal Voltage
1. Disconnect the wiring lead (1) from the glow plug (2) after
turning the main switch off.
2. Turn the main switch key to the "PREHEAT" position, and
measure the voltage between the lead terminal and the chassis.
3. Turn the main switch key to the "START" position, and
measure the voltage with a voltmeter between the lead terminal
and the chassis.If the voltage at either position differs from the
battery voltage, the wiring harness or main switch is faulty.
4. If the voltage at either position differs from the battery voltage,
the wiring harness or main switch is faulty.
9Y1210436ELS0033US0
Glow Plug
1. Disconnect the leads from the glow plugs.
2. Measure the resistance with an ohmmeter between the glow
plug terminal and chassis.
3. If 0 Ω is indicated, the screw at the tip of the glow plug and the
housing are short-circuited.
4. If the factory specification is not indicated, the glow plug is
faulty.
9Y1210436ELS0034US0
Voltage
(Lead terminal
Chassis
Main switch key at
"PREHEAT"
Approx. battery voltage
Main switch key at
"START"
Approx. battery voltage
(1) Wiring Lead (Positive) (2) Glow Plug
Glow plug resistance Factory specification Approx. 0.9 Ω
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