Disconnect the glow plug cables and leads.
Use an ohmmeter to check the glow plugs. Touch one probe to the end of the glow plug and the other probe to the body of glow plug (Item 1) [Figure 70-80-1].
The resistance should be approximately one ohm. If the resistance is infinite, the coil of the glow plug is broken.
Repeat the procedure for each glow plug.
