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Connect a voltmeter between glow plug positive terminal and ground. Set the parking brake and shift the transmission out of gear. Turn the ignition switch to "ON" position and check the following:
Voltmeter should indicate battery voltage as soon as the ignition switch is turned on and the glow plug indicator lamp should be lit. The glow plug indicator lamp should turn off 3 seconds after the ignition switch is turned on
The voltmeter should read 4.3-5.2 volts about 6 seconds after the ignition switch is turned on. Turn ignition off. Unplug fuel cut valve on injection pump. Turn ignition on.
When glow plug indicator light goes out, turn ignition switch to "START". Voltmeter should indicate battery voltage for 1-2 seconds, and then 4.2-5.4 volts for 7-8 seconds. Turn ignition switch to "ON".
Unplug coolant temperature switch connector. Voltmeter should read 0 volts. Connect coolant temperature switch. Unplug speed switch coupler and ground the connector. Voltmeter should read 0 volts.

Fig 1: Quick Start System Schematic Diagram (B2200)

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

System Check