New Holland 3691 – ENGINE: Glow Relay Output Open Load/Short to Battery

The glow relay output is experiencing an open load or a short to battery, which may prevent the glow plug system from functioning properly. This condition can affect engine startability and may indicate an electrical fault in the glow relay circuit.

1. 1

   Glow Relay Output Circuit

2. 2

   Battery Connection to Glow Relay

3. 3

   Wiring Between Glow Relay and Glow Plugs

1. 1

   Inspect

   Check the glow relay output circuit for any visible damage, corrosion, or loose connections.

2. 2

   Test

   Use a multimeter to test for continuity and voltage at the glow relay output to identify an open load or short to battery.

3. 3

   Verify

   Confirm the integrity of the wiring between the glow relay and the glow plugs, ensuring no short circuits or breaks exist.