WACKER Group LTC 4 - Checking Voltage to Glow Plugs (Lombardini 1003 engines)

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Lombardini Engine Troubleshooting LTC Repair

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5.8 Checking Voltage to Glow Plugs (Lombardini 1003 engines)

See Graphic: wc_gr003229

To check the voltage to the glow plugs, carry out the following

procedure:

5.8.1 Disconnect the B (black) wire (a), place the keyswitch in the START

position, and measure the voltage between the black wire and ground.

There should be 12V (battery voltage approximately 12) measured.

• If 12V is measured, check the function of the glow plug.

• If 12V is not measured, continue.

5.8.2 Disconnect the B (black) wire (b) and measure the voltage between it

and ground. There should be 12V (battery voltage approximately 12)

measured.

• If 12V is measured, clean the connection points of the wires.

Reconnect the wires and check the function of the glow plug.

• If 12V is not measured, check the glow plug relay.

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