| Checking glow plug system |
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| The glow plug system is activated via the automatic glow period control unit -J179-. The control unit is self-diagnosis compatible. |
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| A fault is stored in the event memory of the engine control unit -J623- if a fault occurs in the glow plug system. |
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| The procedure for checking the glow plug system is described in the „Guided Fault Finding“. |
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| For faster starting, the vehicle is equipped with electronically controlled glow plugs and a separate glow period control unit. |
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| Each glow plug is activated and diagnosed separately. |
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| Wait for 60 seconds each time after performing final control diagnosis of the glow period control unit. The ignition must remain switched on. |
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| If you do not wait for 60 seconds (if ignition is switched off and immediately switched on again), the glow plugs can be damaged (due to repeated pre-heating). |
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| The activation of the glow plugs is controlled according to coolant temperature. |
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