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Glow plug control module

Glow plug control module



The glow plug control module is used to activate the glow plugs after a command from the engine management system. It is supplied with +30 from fuse 2 (60A).

There is a diagnostic function in the glow plug control module, which monitors the glow plugs, that informs the engine control module through a cable from glow plug control module pin 9A-B to engine control module connections 49 ad 68 if a fault should occur.

When the engine control module grounds pin 8, the glow plug control module will be activated, which means that pins 1, 2 and 6 on the control module are supplied with current.

Diagnostics

If the glow plug control module or corresponding wiring harness is out of order, it can be indicated by the following DTCs being generated:


• P0380 Glow Control Unit. Feedback Circuit A, malfunction

• P0382 Glow Control Unit. Feedback Circuit B, malfunction

• P1381 Glow Control Unit. Short to B+

• P1382 Glow Control Unit. Open Circuit / Short to Ground



System reaction to a fault

• CHECK ENGINE on.

• Starting difficulties on cold engine.

• Running problems on cold engine.