1. The display window will show in sequence the actual temperature sensor readings, refrigerant pressure, blower control voltage, software status of the control module. 2. The temperature control is maintained during the duration of the test.
		P83.40-0304-01

Preparation for Test 1. Ignition: ON 2. Press . 3. Set both temperature selectors to °F. 4. Press for > 5 secs. 5. The left display will alternately show the number and the in-car temperature (e.g. °F) is indicated on the right display (refer to table). 6. By pressing the next highest test step is displayed (see table). 7. Press to end test program. Note: The display will show " " if there is a short or open circuit, negative sensor values will be shown in the left display (e.g. - ).

Display code in N22 window		Possible cause	Test step/Remedy 1)
		In-car temperature sensor (B10/4)	23 4.0
		Outside temperature sensor (B10/5) up to MY 1997, Outside temperature indicator temperature sensor (B14) up to MY 1996	23 10.0 23 30.0
		Left heater core temperature sensor (B10/2)	23 7.0
		Right heater core temperature sensor (B10/3)	23 8.0
		Evaporator temperature sensor (B10/6)	23 5.0
		ECT sensor (DFI, IFI) (B11/4), or right ECT sensor (11/10)	23 9.0 23 30.0
		Refrigerant pressure in bar, e.g. corresponds to 4 bar	23 11.0
		Refrigerant temperature sensor (B12/1), e.g, = 73 °F	23 6.0
	-	Not used	-
		Blower control voltage, e.g. (min) - (max) corresponds to 0.8 - 6.0 V	23 19.0
		Emissions sensor (B31) e.g. corresponds to 3.1 V	23 14.0
		Sun sensor (B32) e.g. corresponds to 4.2 V	23 12.0
	-	Control current for auxliary fan e.g. corresponds to 6.1 mA (max 10mA)	23 15.0
		Engine speed, e.g. . . (x 100) corresponds to 9900 rpm	23 29.0 up to MY 1997, 23 30.0 as of MY 1997
		Vehicle speed (km/h)	23 27.0 up to MY 1997, 23 30.0 as of MY 1997
		Terminal 58d e.g. corresponds to 99 % battery voltage	23 30.0 as of MY 1997
	-	Battery voltage e.g. corresponds to 12.5 V	-
		Left rear heater core temperature sensor (B10/9)	23 3.0
		Right rear heater core temperature sensor (B10/10)	23 4.0
		Rear evaporator temperature sensor (B10/11)	23 2.0
		Rear blower control voltage, e.g. (min) - (max) corresponds to .08 - 6.0 V	23 5.0
	-	Left temperature sensor (rear)	23 7.0
	-	Right temperature sensor (rear)	23 6.0
	-	Software status e.g. (N22/3)	-
	-	Hardware statuse.g. (N22/3)	-
	2)	Software status e.g. (N22) correspondes to 65	-
	2)	Hardware status e.g. (N22)	-
	-	Version code 1. Numerical value	14
	-	Version code 2. Numerical value	14
-		Compressor emergency shutoff signal	-
-		Compressor WOT shutoff	-

1) Observe Preparation for Test. 2) Control Module Version Menu