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| Disconnect plug -1- at the coolant temperature sender -G62--2-. |
Note By disconnecting the plug from the coolant temperature sender, the engine condition „cold“ is simulated and when the ignition is switched on a corresponding preheating process is performed. |
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| Remove glow plug connectors from the glow plugs. |
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| Connect Hand multimeter for voltage measurement to a glow plug connector and engine mass. |
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| Switch on ignition. The approx. battery voltage must be displayed for approximately 20 seconds. |
If no voltage is present: |
During the simulated preheating process the glow period warning lamp -K29- must light up. |
If the warning light does not light up: |
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