S6 (C4) AAN: reading engine info on climatronic display

[OrMar]

I have been searching for one hour, but just can't find instructions how to do it.
At the first place, I'm interested in engine temperature.
Any advice ?

Thank you,
Mario

[Knight Rider S4]

This should help you out

http://www.audiworld.com/tech/int5.shtml

[OrMar]

It should, thank you.
I'm tempted to go out right now (11pm) and try it.


Mario

[johne]

Note of caution here, not all climate ECUs have an engine temp. sensor connected so you might not get a true reading on diagnostic code "51". Don't know one way or the other on the AAN install.

John

[UrS4boy]

I have been searching for one hour, but just can't find instructions how to do it. At the first place, I'm interested in engine temperature.
Any advice ? Thank you, Mario

Here is a link that will help you figure out whether your engine temp issue is the Multifunction Temperature Switch or the Thermostat:

http://forums.quattroworld.com/s4s6/msgs/22584.phtml

Here is a link to info about the G62 Temp sensor, the one the AAN ECU uses (not the one the climate control uses):

http://forums.quattroworld.com/s4s6/msgs/20985.phtml

Here is a link to the Climate Control coolant temp sensor info:

http://forums.quattroworld.com/s4s6/msgs/22679.phtml

Here is a thermostat diagnostic/replacement post:

http://forums.quattroworld.com/s4s6/msgs/21881.phtml

If you don't have your answer after going through the above,
repost.

[HRS4]

Reading climate control diagnostic trouble codes


The Automatic Climate Control which appeared in several models includes an easy-to-use 61-channel OBD (On Board Diagnostic) display which can be accessed without the use of special tools. This function can be an indispensable tool in diagnosing problems with the climate control system. Owners of cars without automatic climate control must have error codes read with a VAG 1551 Scan Tool.

# To Access CC OBD readout: Car ignition on
# Press and hold the recirculation button
# Press and hold the up arrow button
# Release both buttons: "01c" will be displayed ("01c" indicates channel 1, "02c" indicates channel 2, etc.)

To select a different channel, press temperature + or temperature - buttons.

To call up information from a particular channel, select desired channel, and press the recirculation button.

To leave memory display, press the AUTO button, or switch the ignition off.

Diagnostic Channels and their descriptions
1 System malfunction - displayed as a Diagnostic Trouble Code (DTC)
2 Digital value of Interior Temperature Sensor, in Headliner
3 Digital value of Interior Temperature Sensor, in Instrument Panel
4 Digital value of Fresh Air Intake Duct Temperature Sensor
5 Digital value of Outside Air (Ambient) Temperature Sensor, front
6 Digital value of Outside Air (Ambient) Temperature Sensor
7 Digital value of Ambient Temperature Sensor at Fresh Air Blower
8 Digital value of Temperature Regulator Flap Motor Potentiometer
9 Delta value of Temperature Regulator Flap
10 Non-corrected specified value of Temperature Regulator Flap
11 Digital value of Central Flap Motor Potentiometer
12 Specified value of Central Flap
13 Digital value of Footwell/Defroster Flap Motor Potentiometer
14 Specified value of Footwell/Defroster Flap
15 Digital value of Air Flow Flap Motor Potentiometer (Disregard for US/Canada models)
16 Specified value of Air Flow Flap
17 Vehicle Speed (km/h)
18 Actual Fresh Air Blower voltage (Volts)
19 Specified Fresh Air Blower voltage (Volts)
20 A/C Compressor (A/C Clutch) voltage (Volts)
21 Number of low voltage occurrences, non-transient
22 Cycle condition of A/C Refrigerant High Pressure Switch
23 Cyclings of the A/C Refrigerant High Pressure Switch
24 Cyclings of the switches, absolute non-fluctuating
25 Analog/Digital value, Kick-Down Switch
26 Analog/Digital value, Engine Coolant Temperature (ECT) Warning Light
27 Coding value
28 Engine Speed (RPM)
29 A/C Compressor speed in rpm (Equals Engine Speed x 1.28)
30 Software version
31 Display check (all segments of A/C Control Head display light up)
32 Potentiometer malfunction counter, Temperature Regulator Flap
33 Potentiometer malfunction counter, Central Flap
34 Potentiometer malfunction counter, Footwell/Defroster Flap
35 Potentiometer malfunction counter, Air Flow Flap
36 Feedback value, cold end-stop, Temperature Regulator Flap Motor Potentiometer
37 Feedback value, hot end-stop, Temperature Regulator Flap Motor Potentiometer
38 Feedback value, cold end-stop, Central Flap Motor Potentiometer
39 Feedback value, hot end-stop, Central Flap Motor Potentiometer
40 Feedback value, cold end-stop, Footwell/Defroster Flap Motor Potentiometer
41 Feedback value, hot end-stop, Footwell/Defroster Flap Motor Potentiometer
42 Feedback value, cold end-stop, Air Flow Flap Motor Potentiometer
43 Feedback value, hot end-stop, Air Flow Flap Motor Potentiometer
44 Vehicle operation cycle counter
45 Calculated Interior temperature (internal software, in digits)
46 Outside (ambient) temperature, filtered, for regulation (internal software)
47 Outside (ambient) temperature, unfiltered, (internal software, in Celsius)
48 Outside (ambient) temperature, unfiltered (in digits)
49 Malfunction counter for speedometer (vehicle speed) signal
50 Standing time (in minutes)
51 Engine Coolant Temperature (ECT), in Celsius
52 Graphics channel 1, see chart below. NOTE: When Diagnostic Channel 52
is selected, .--.-. is displayed first. A/C compressor switch-off conditions
are identified by illuminated segments of the .88.8. display.
53 Graphics channel 2, see chart below. NOTE: When Diagnostic Channel 53
is selected, .--.-. is displayed first. A/C system electrical outputs are
identified by illuminated segments of the .88.8. display.
54 Control characteristics
55 Outside (ambient) temperature, in Celsius or Fahrenheit depending on the setting
of the A/C control head
56 Temperature in Celsius, from Interior Temperature Sensor, in Headliner
57 Temperature in Celsius, from Interior Temperature Sensor, in Instrument Panel
58 Temperature in Celsius, from Fresh Air Intake Duct Temperature Sensor
59 Temperature in Celsius, from Outside Air (Ambient) Temperature Sensor
60 Temperature in Celsius, from Ambient Temperature Sensor at Fresh Air Blower
61 Software version (latest)


Diagnostic Trouble Codes
DTC Malfunction
0.00 No Malfunction Present
02.1 (G86) Interior Temperature Sensor, in Headliner, static open (*02.1)
02.2 Interior Temperature Sensor, in Headliner, static short, see 02.1
02.3 Interior Temperature Sensor, in Headliner, sporadic open
02.4 Interior Temperature Sensor, in Headliner, sporadic short
03.1 (G56) Interior Temperature Sensor, in Instrument Panel, static open, see 02.1
03.2 Interior Temperature Sensor, in Instrument Panel, static short, see 02.1
03.3 Interior Temperature Sensor, in Instrument Panel, sporadic open
03.4 Interior Temperature Sensor, in Instrument Panel, sporadic short
04.1 (G89) Fresh Air Intake Duct Temperature Sensor, static open (*04.1)
04.2 Fresh Air Intake Duct Temperature Sensor, static short, see 04.1
04.3 Fresh Air Intake Duct Temperature Sensor, sporadic open
04.4 Fresh Air Intake Duct Temperature Sensor, sporadic short
05.1 (G17) Outside Air (Ambient) Temperature Sensor, front, static open (*05.1)
05.2 Outside Air (Ambient) Temperature Sensor, front, static short, see 05.1 (*05.2)
05.3 Outside Air (Ambient) Temperature Sensor, front, sporadic open
05.4 Outside Air (Ambient) Temperature Sensor, front, sporadic short
06.1 (G110) Engine Coolant Temperature (ECT), A/C static open (*06.1)
06.2 Engine Coolant Temperature (ECT), A/C static short, see 06.1
06.3 Engine Coolant Temperature (ECT), A/C sporadic open
06.4 Engine Coolant Temperature (ECT), A/C sporadic short
07.1 (G109) Ambient Temperature Sensor at Fresh Air Blower, static open (*07.1)
07.2 Ambient Temperature Sensor at Fresh Air Blower, static short, see 07.1
07.3 Ambient Temperature Sensorat Fresh Air Blower, sporadic open
07.4 Ambient Temperature Sensor at Fresh Air Blower, sporadic short
08.1 (G92) Temperature Regulator Flap Motor Potentiometer, static open (*08.1)
08.2 Temperature Regulator Flap Motor Potentiometer, static short, see 08.1
08.3 Temperature Regulator Flap Motor Potentiometer, sporadic open
08.4 Temperature Regulator Flap Motor Potentiometer, sporadic short
08.5 Temperature Regulator Flap, static block (*08.5)
08.6 Temperature Regulator Flap Motor Potentiometer, malfunction
08.7 Temperature Regulator Flap, sporadic block
11.1 (G112) Central Flap Motor Potentiometer, static open (*11.1)
11.2 Central Flap Motor Potentiometer, static short, see 11.1
11.3 Central Flap Motor Potentiomenter, sporadic open
11.4 Central Flap Motor Potentiometer, sporadic short
11.5 Central Flap, static block (*11.5)
11.6 Central Flap Motor Potentiometer, malfunction
11.7 Central Flap, sporadic block
13.1 (G114) Footwell/Defroster Flap Motor Potentiometer, static open (*13.1)
13.2 Footwell/Defroster Flap Motor Potentiometer, static short, see 13.1
13.3 Footwell/Defroster Flap Motor Potentiometer, sporadic open
13.4 Footwell/Defroster Flap Motor Potentiometer, sporadic short
13.5 Footwell/Defroster Flap, static block (*13.5)
13.6 Footwell/Defroster Flap Motor Potentiometer, malfunction
13.7 Footwell/Defroster Flap, sporadic block
15.1 (G113) Air Flow Flap Motor Potentiometer, static open (*15.1)
15.2 Air Flow Flap Motor Potentiometer, static short, see 15.1
15.3 Air Flow Flap Motor Potentiometer, sporadic open
15.4 Air Flow Flap Motor Potentiometer, sporadic short
15.5 Air Flow Flap, static block, see (*15.5)
15.6 Air Flow Flap Motor Potentiometer, malfunction
15.7 Air Flow Flap, sporadic block
17.0 Vehicle Speed Signal faulty
18.1 Fresh Air Blower voltage, static
18.3 Fresh Air Blower voltage, sporadic
20.1 A/C compressor voltage not OK - static (*20.1)
20.3 A/C compressor voltage not OK - sporadic
22.1 (F118) A/C Refrigerant High Pressure Switch, static open (*22.1)
22.3 A/C Refrigerant High Pressure Switch, sporadic open
22.5 A/C Refrigerant High Pressure Switch, 120X open (*22.5)
29.1 Belt slip detection "soft," static
29.2 Belt slip detection "hard," static
29.3 Belt slip detection "soft," sporadic
29.4 Belt slip detection "hard," sporadic


Remarks
*02.1 Digital default value of 128 is programmed if sensor fails
*04.1 Value supplied by Temperature Sensor is used if sensor fails
*05.1 Value supplied by Temperature Sensor is used if sensor fails
*05.2 Digital default value of 128 is programmed if sensors G89 and G17 both fail
*06.1 Engine Coolant Temperature is calculated if sensor should fail or is not
installed; diagnosis occurs only above 0oC
*07.1 Programmed corrective value = 0
*08.1 Temperature Regulator Flap Motor will no longer be controlled
automatically; manual adjustment only
*08.5 Motor is cycled, software attempts to eliminate block
*11.1 Central Flap Motor will no longer be controlled automatically; manual
adjustment only
*11.5 Motor is cycled; software attempts to eliminate block
*13.1 Footwell/Defroster Flap Motor will no longer be controlled automatically;
manual adjustment only
*13.5 Motor is cycled; software attempts to eliminate block
*15.1 Digital value is internally programmed for limp-home mode
*15.5 Motor is cycled; software attempts to eliminate block
*20.1 Compressor remains off until voltage is greater than 10.8V for at least 25 seconds
*22.1 Compressor remains off until switch closes
*22.5 Compressor re-engagement circuit, VAG 1551 Scan Tool function



Diagnostic Channel 52 - Graphics Channel 1

A/C Compressor switch-off conditions
Note: if an A/C compressor switch-off condition exists, a segment of the .88.8. display, noted below as an alpha-numeric code, will il luminate.


Segment Condition
A1 Slippage or blockage, A/C Refrigerant High Pressure Switch, 120x off
B1 Engine Speed (RPM) less than 200 - 500
C1 Engine Speed (RPM) greater than 6000
D1 Engine Speed (RPM) greater than 6000
E1 System function OK*
F1 System function OK*
G1 System function OK*
A2 A/C manually switched off (A/C standby canceled)
B2 Low Voltage
C2 Kick-down switch (via Transmission Control Module (TCM), compressor off for 12 seconds max.
E2 A/C Refrigerant Low Pressure Switch (F73)
F2 A/C Refrigerant High Pressure Switch (F118)
G2 System function OK*
A3 ECON mode selected
B3 OFF selected
C3 Outside (ambient) temperature too low
D3 Engine management system (compressor will remain off for 3 -12 seconds)
E3 High pressure occurrences more than 30 times
F3 Ambient Temperature Sensor at Fresh Air Blower (G109) less than 27 degF (-3oC)
G3 System function OK*
Decimal Point Visible: A/C compressor ON
Not Visible: A/C compressor OFF
*segments g1, g2, and g3 must illuminate simultaneously to indicate system function is OK.


Diagnostic Channel 53 - Graphics Channel 2

Active electrical outputs
Note: When a NO system electrical output is activated, a segment of the .88.8. display, noted below as an alpha-numeric code, will ill uminate. The decimal point in the .88.8. display will not illuminate in this channel.


Segment Condition
A1 Fan for interior temperature sensor
B1 Fresh air/recirculation flap closed (recirculation mode)
C1 Heater valve closed
D1 Bi-directional wiring harness
E1 A/C compressor ON
F1 coolant fan first speed ON
G1 System function OK*
A2 Air flow flap open
B2 Air flow flap open
C2 Air flow flap closed
D2 Footwell/Defroster flap in .Footwell. position
E2 Footwell/Defroster flap in .Footwell. position
F2 Footwell/Defroster flap in .Defroster. position
G2 System function OK*
A3 Central flap in .instrument panel outlet. position
B3 Central flap in .instrument panel outlet. position
C3 Central flap in .footwell outlet/defrost. position
D3 Temperature flap in .cold air. position
E3 Temperature flap in .cold air. position
F3 Temperature flap in .warm air. position
G3 System function OK*

[OrMar]

Thanks, all of you.
btw, is there a similar trick for 3b engine and older climatronic in my 220v ?

Thanks, Mario

[OrMar]

Also, that doesn't work in '92 100 (c4) 2.0 16v. Is there some other way ?
I would like to know why climatronic start max heating as soon as I put it to auto. My guess is that one of the sensors is giving wrong information about cabin air temperature.

[s2_wot]

That's all very useful to know, belt slippage detection and all, wow