ELECTRICAL SYSTEM
B2050, B2350, B2650, B3150, WSM
9-S20
(6) 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.
4. If the voltage at either position differs from the battery voltage,
the wiring harness or main switch is damaged.
9Y1210982ELS0028US0
Glow Plug Continuity
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  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
damaged.
9Y1210982ELS0029US0
Voltage (Lead
terminal - Chassis)
Main switch key at
PREHEAT
Approx. battery voltage
Main switch key at START
(1) Wiring Lead (2) Glow Plug
Glow plug resistance Factory specification Approx. 0.9 
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