Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | Direct injection and preglow system with distributor-type pump to 04.99 | Self diagnosis, V.A.G Inspection Service | Measured value blocks | Evaluating measured value blocks

Evaluation: Additional heater display

Significance of figures in 8-digit number block for additional heater:

Significance if display = 1
x	x	x	x	x	x	x	x	Additional heater switched off, because:
							1	Coolant temperature more than 70 °C...80 °C or intake air temperature more than + 5 °C
						1		Alternator defective
					1			Battery voltage below 9 V
				1				Engine speed below 875 rpm
			1					Engine start within last 10 seconds
		1						Coolant temperature sender -G62- or intake manifold temperature sender -G72- defective
	1							Ignore
1								Ignore

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