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Discussion Starter #1
My uncles 95 s320 heat turns on everytime the car is started, he then has to manually shut it off. He shuts the heat off before he turns the ignition to off but yet it will come back on when starting the car back up. It also always goes to the same settings as if its in memory somewhere, any thoughts are appreciated.
 

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SEC 600 V12 2dr COUPE (RHD) One of the chosen few.
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Yeh there is a self diagnostics sequence that you can do ignition on , turn the wheels to white, press both auto buttons for 20+secs then press REST for 10 secs, NO1 appears left window in car temp rh window
these are the tests

Description and Operation
The automatic air conditioner (A/C) in the W140 models can be diagnosed by performing the following steps. There are two (2) basic tests; the first reads the actual sensor values; the second, readout of the DTCs.

The display windows (arrows) show in sequence the actual temperature sensor readings, refrigerant pressure, blower control voltage, software status and control module version.

Reading Sensor Values
The following preparation are required for test:
Air Conditioner control setup - Set the TEMPERATURE selector wheels into the WHITE [white] area.
- Turn Ignition to ON or preferably, start car and let it idle
- Press left and right [AUTO] buttons
- Within 20 seconds, then press [REST] button until the display changes (about 9 secs)
- Number '1' appears in the left window; the in-car temperature in the right ('73 F') as shown in picture, - OR -
HI if there is a short circuit, LO is there is an open circuit.
- By pressing the left [AUTO] button, the next value is displayed in the right window per the table below.
- Press the right [AUTO] button, to go back to the previous value displayed.
- Press [REST] button to end the test program.

Test Step Sensor Value Display 1 In-car temperature sensor w/ aspirator blower (B10/4) 2 Outside temperature sensor (B10/5) 3 Left heater core temperature sensor (B10/2)* 4 Right heater core temperature sensor (B10/3)* 5 Evaporator temperature sensor (B10/6) 6 Coolant temperature sensor (B10/8)*
7 Refrigerant pressure in bar (06 = 6 bar) 8 Blower control voltage from B(min) - 60(max) 9 Software status, A/C push button control module, manufacturer Bosch: 57, 58, etc.: manufacturer Kammer: 02, 03, etc. 10 ** Left heater core temperature sensor (B10/9) (rear climate control) 11 ** Right heater core temperature sensor (B10/10) (rear climate control) 12 ** Evaporator temperature sensor (B10/11) (rear climate control) 13 ** Software status, rear A/C control unit, manufacturer Bosch: 42 *** 16 Active charcoal filter: R = equipped; O = not equipped


Reading DTCs from Auto A/C System
The following preparation are required for test:
- Set the LEFT TEMPERATURE selector wheel into the RED [red] area.
- Set the RIGHT TEMPERATURE selector wheel into the BLUE [blue] area.
- Turn Ignition to ON.
- Press left [AUTO] button.
- Within 10 seconds, simultaneously press [REST] and [O] buttons until the displays shows permanent stored DTCs in memory per the table below. Press the RIGHT [AUTO] button until all stored DTCs are displayed. Record each as they are displayed.
- Each fault has a specific DTC. The letter 'E' (error) along with the hundredth digit of the display code will show in the window. The tenth and single digit of the code displays in the right window. By pressing the right [AUTO], the next DTC stored in memory will be displayed.
- Turn the ignition OFF and repair recorded DTCs according to the respective diagnostic chart.

- To delete stored DTCs, repeat the first five (5) steps, then press the LEFT [AUTO] for the letter 'D' (delete) to appear in the window. By pressing the right [AUTO] the display code will be deleted from memory. Continue to press the left and right [AUTO] buttons until all codes are deleted from memory. The display will show 'E0 00'.
- Return the temperature selector to normal setting.

Display Code Possible Cause
E0 01 No faults in system
E0 02 A/C push button control module (N22)
E0 03 Rear climate control module
E0 06 Connection to switchover valve block (Y11)
E0 07 Data exchange (CAN B), short circuit
E0 08 Data exchange (CAN A), short circuit
E0 09 Data exchange (CAN A and B), short circuit
E0 10 Repeat displaying for malfunction readout
E0 11 Data exchange (CAN B), open circuit
E0 12 Data exchange (CAN A), open circuit
E0 13 connection to rear climate control module
E0 14 Data exchange (CAN B), open circuit (rear climate control)
E0 15 Data exchange (CAN A), open circuit (rear climate control)
E0 16 In-car temperature sensor w/ aspirator blower (B10/4), short circuit *)
E0 17 In-car temperature sensor w/ aspirator blower (B10/4), short circuit **)
E0 18 In-car temperature sensor w/ aspirator blower (B10/4), open circuit *)
E0 19 In-car temperature sensor w/ aspirator blower (B10/4), open circuit **)
E0 24 Left heater core temperature sensor (B10/2), short circuit *)
E0 25 Left heater core temperature sensor (B10/2), short circuit **)
E0 26 Left heater core temperature sensor (B10/2), open or short circuit *)
E0 27 Left heater core temperature sensor (B10/2), open or short circuit **)
E0 28 Right heater core temperature sensor (B10/3), short circuit *)
E0 29 Right heater core temperature sensor (B10/3), short circuit **)
E0 30 Right heater core temperature sensor (B10/3), open or short circuit *)
E0 31 Right heater core temperature sensor (B10/3), open or short circuit **)
E0 32 Outside temperature sensor (B10/5), short circuit *)
E0 33 Outside temperature sensor (B10/5), short circuit **)
E0 34 Outside temperature sensor (B10/5), open or short circuit *)
E0 35 Outside temperature sensor (B10/5), open or short circuit **)
E0 36 Evaporator temperature sensor (B10/6), short circuit *)
E0 37 Evaporator temperature sensor (B10/6), short circuit **)
E0 38 Evaporator temperature sensor (B10/6), open or short circuit *)
E0 39 Evaporator temperature sensor (B10/6), open or short circuit **)
E0 40 A/C Coolant temperature sensor (B10/8), short circuit *)
E0 41 A/C system coolant temperature sensor (B10/8), short circuit **)
E0 42 A/C system coolant temperature sensor (B10/8), open or short circuit *)
E0 43 A/C system coolant temperature sensor (B10/8), open or short circuit **)
E0 44 Refrigerant pressure sensor (B12), short circuit *)
E0 45 Refrigerant pressure sensor (B12), short circuit **)
E0 46 Refrigerant pressure sensor (B12), open or short circuit *)
E0 47 Refrigerant pressure sensor (B12), open or short circuit **)
E0 48 Left temperature selector wheel, short circuit *)
E0 49 Left temperature selector wheel, short circuit **)
E0 50 Left temperature selector wheel, open or short circuit *)
E0 51 Left temperature selector wheel, open or short circuit **)
E0 52 Right temperature selector wheel, short circuit *)
E0 53 Right temperature selector wheel, short circuit **)
E0 54 Right temperature selector wheel, open or short circuit *)
E0 55 Right temperature selector wheel, open or short circuit **)
E0 72 Heater supply unit circulation pup (A31m1), short circuit *)
E0 73 Heater supply unit circulation pup (A31m1), short circuit **)
E0 74 Heater supply unit circulation pup (A31m1), open or short circuit *)
E0 75 Heater supply unit circulation pup (A31m1), open or short circuit **)
E0 76 Heater supply unit circulation pump (A31m1), over load *)
E0 77 Heater supply unit circulation pup (A31m1), over load **)
E0 80 Heater supply unit left duovalve (A31y1), short circuit *)
E0 81 Heater supply unit left duovalve (A31y1), short circuit **)
E0 82 Heater supply unit left duovalve (A31y1), open or short circuit *)
E0 83 Heater supply unit left duovalve (A31y1), open or short circuit **)
E0 84 Heater supply unit right duovalve (A31y2), short circuit *)
E0 85 Heater supply unit right duovalve (A31y2), short circuit **)
E0 86 Heater supply unit right duovalve (A31y2), open or short circuit *)
E0 87 Heater supply unit right duovalve (A31y2), open or short circuit **)
E0 88 A/C compressor ground activation *)
E0 89 A/C compressor ground activation **)
E0 90 A/C compressor ground activation, open or short circuit *)
E0 91 A/C compressor ground activation, open or short circuit **)
E0 96 Auxiliary fan, 1st activation, short circuit *)
E0 97 Auxiliary fan, 1st activation, short circuit **)
E0 98 Auxiliary fan, 1st activation, open or short circuit *)
E0 99 Auxiliary fan, 1st activation, open or short circuit **)
E1 00 Auxiliary fan, 2nd stage activation, short circuit *)
E1 01 Auxiliary fan, 2nd stage activation, short circuit **)
E1 02 Auxiliary fan, 2nd stage activation, open or short circuit *)
E1 03 Auxiliary fan, 2nd stage activation, open or short circuit **)
E1 04 Auxiliary fan, 3nd stage activation, short circuit *)
E1 05 Auxiliary fan, 3nd stage activation, short circuit **)
E1 06 Auxiliary fan, 3nd stage activation, open or short circuit *)
E1 07 Auxiliary fan, 3nd stage activation, open or short circuit **)
E1 08 After-run pump relay (K30), power supply, short circuit *) ***)
E1 09 After-run pump relay (K30), power supply, short circuit **) ***)
E1 10 After-run pump relay (K30), power supply, open or short circuit *) ***)
E1 11 After-run pump relay (K30), power supply, open or short circuit **) ***)
E1 12 Engine rpm increase diode matrix (V2), short circuit *)
E1 13 Engine rpm increase diode matrix (V2), short circuit **)
E1 14 Engine rpm increase diode matrix (V2), open or short circuit *)
E1 15 Engine rpm increase diode matrix (V2), open or short circuit **)
E1 16 Charcoal filter actuator (A32m2) (OPEN), short circuit *)
E1 17 Charcoal filter actuator (A32m2) (OPEN), short circuit **)
E1 18 Charcoal filter actuator (A32m2) (OPEN), open or short circuit *)
E1 19 Charcoal filter actuator (A32m2) (OPEN), open or short circuit **)
E1 20 Charcoal filter actuator (A32m2) (CLOSED), short circuit *)
E1 21 Charcoal filter actuator (A32m2) (CLOSED), short circuit **)
E1 22 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit *)
E1 23 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit **)
E1 28 Left rear heater core temperature sensor (B10/9), short circuit *)
E1 29 Left rear heater core temperature sensor (B10/9), short circiut **)
E1 30 Left rear heater core temperature sensor (B10/9), short or open *)
E1 31 Left rear heater core temperature sensor (B10/9), short or open **)
E1 32 Right rear heater core temperature sensor (B10/10), short *)
E1 33 Right rear heater core temperature sensor (B10/10), short **)
E1 34 Right rear heater core temperature sensor (B10/10), short or open *)
E1 35 Right rear heater core temperature sensor (B10/10), short or open **)
E1 36 Left temperature selector wheel, short *)
E1 37 Left temperature selector wheel, short **)
E1 38 Left temperature selector wheel, short *)
E1 39 Left temperature selector wheel, short or open **)
E1 40 Right temperature selector wheel, short *)
E1 41 Right temperature selector wheel, short **)
E1 42 Right temperature selector wheel, short or open *)
E1 43 Right temperature selector wheel, short or open **)
E1 44 Right evaporator temperature selector wheel (B10/11), short *)
E1 45 Right evaporator temperature selector wheel (B10/11), short **)
E1 46 Right evaporator temperature selector wheel (B10/11), short or open *)
E1 47 Right evaporator temperature selector wheel (B10/11), short or open **)
E1 48 Coolant circulation pump (A31/1m1), short *)
E1 49 Coolant circulation pump (A31/1m1), short **)
E1 50 Coolant circulation pump (A31/1m1), short or open *)
E1 51 Coolant circulation pump (A31/1m1), short or open **)
E1 52 Coolant circulation pump (A31/1m1), overload *)
E1 53 Coolant circulation pump (A31/1m1), overload **)
E1 56 Left duovalve (water value, A31/1y1, short *)
E1 57 Left duovalve (water value, A31/1y1, short **)
E1 58 Left duovalve (water value, A31/1y1, short or open *)
E1 59 Left duovalve (water value, A31/1y1, short or open **)
E1 60 Right duovalve (water value, A31/1y2, short *)
E1 61 Right duovalve (water value, A31/1y2, short **)
E1 62 Right duovalve (water value, A31/1y2, short or open *)
E1 63 Right duovalve (water value, A31/1y2, short or open **)
E1 64 Rear refrigerant shut-off valve (Y67, short *)
E1 65 Rear refrigerant shut-off valve (Y67, short **)
E1 66 Rear refrigerant shut-off valve (Y67, short or open *)
E1 67 Rear refrigerant shut-off valve (Y67, short or open **)
E1 68 Rear tunnel flap vacuum valve (Y67/1, short *)
E1 69 Rear tunnel flap vacuum valve (Y67/1, short **)
E1 70 Rear tunnel flap vacuum valve (Y67/1, short or open *)
E1 71 Rear tunnel flap vacuum valve (Y67/1, short or open **)

You might want to print it out.. It confuses the crap out of me when I try to do it...

Edited by Merc600sec 12/31/2004 1:13 PM
 

·
Registered
SEC 600 V12 2dr COUPE (RHD) One of the chosen few.
Joined
·
2,233 Posts
Yeh there is a self diagnostics sequence that you can do ignition on , turn the wheels to white, press both auto buttons for 20+secs then press REST for 10 secs, NO1 appears left window in car temp rh window
these are the tests

Description and Operation
The automatic air conditioner (A/C) in the W140 models can be diagnosed by performing the following steps. There are two (2) basic tests; the first reads the actual sensor values; the second, readout of the DTCs.

The display windows (arrows) show in sequence the actual temperature sensor readings, refrigerant pressure, blower control voltage, software status and control module version.

Reading Sensor Values
The following preparation are required for test:
Air Conditioner control setup - Set the TEMPERATURE selector wheels into the WHITE [white] area.
- Turn Ignition to ON or preferably, start car and let it idle
- Press left and right [AUTO] buttons
- Within 20 seconds, then press [REST] button until the display changes (about 9 secs)
- Number '1' appears in the left window; the in-car temperature in the right ('73 F') as shown in picture, - OR -
HI if there is a short circuit, LO is there is an open circuit.
- By pressing the left [AUTO] button, the next value is displayed in the right window per the table below.
- Press the right [AUTO] button, to go back to the previous value displayed.
- Press [REST] button to end the test program.

Test Step Sensor Value Display 1 In-car temperature sensor w/ aspirator blower (B10/4) 2 Outside temperature sensor (B10/5) 3 Left heater core temperature sensor (B10/2)* 4 Right heater core temperature sensor (B10/3)* 5 Evaporator temperature sensor (B10/6) 6 Coolant temperature sensor (B10/8)*
7 Refrigerant pressure in bar (06 = 6 bar) 8 Blower control voltage from B(min) - 60(max) 9 Software status, A/C push button control module, manufacturer Bosch: 57, 58, etc.: manufacturer Kammer: 02, 03, etc. 10 ** Left heater core temperature sensor (B10/9) (rear climate control) 11 ** Right heater core temperature sensor (B10/10) (rear climate control) 12 ** Evaporator temperature sensor (B10/11) (rear climate control) 13 ** Software status, rear A/C control unit, manufacturer Bosch: 42 *** 16 Active charcoal filter: R = equipped; O = not equipped


Reading DTCs from Auto A/C System
The following preparation are required for test:
- Set the LEFT TEMPERATURE selector wheel into the RED [red] area.
- Set the RIGHT TEMPERATURE selector wheel into the BLUE [blue] area.
- Turn Ignition to ON.
- Press left [AUTO] button.
- Within 10 seconds, simultaneously press [REST] and [O] buttons until the displays shows permanent stored DTCs in memory per the table below. Press the RIGHT [AUTO] button until all stored DTCs are displayed. Record each as they are displayed.
- Each fault has a specific DTC. The letter 'E' (error) along with the hundredth digit of the display code will show in the window. The tenth and single digit of the code displays in the right window. By pressing the right [AUTO], the next DTC stored in memory will be displayed.
- Turn the ignition OFF and repair recorded DTCs according to the respective diagnostic chart.

- To delete stored DTCs, repeat the first five (5) steps, then press the LEFT [AUTO] for the letter 'D' (delete) to appear in the window. By pressing the right [AUTO] the display code will be deleted from memory. Continue to press the left and right [AUTO] buttons until all codes are deleted from memory. The display will show 'E0 00'.
- Return the temperature selector to normal setting.

Display Code Possible Cause
E0 01 No faults in system
E0 02 A/C push button control module (N22)
E0 03 Rear climate control module
E0 06 Connection to switchover valve block (Y11)
E0 07 Data exchange (CAN B), short circuit
E0 08 Data exchange (CAN A), short circuit
E0 09 Data exchange (CAN A and B), short circuit
E0 10 Repeat displaying for malfunction readout
E0 11 Data exchange (CAN B), open circuit
E0 12 Data exchange (CAN A), open circuit
E0 13 connection to rear climate control module
E0 14 Data exchange (CAN B), open circuit (rear climate control)
E0 15 Data exchange (CAN A), open circuit (rear climate control)
E0 16 In-car temperature sensor w/ aspirator blower (B10/4), short circuit *)
E0 17 In-car temperature sensor w/ aspirator blower (B10/4), short circuit **)
E0 18 In-car temperature sensor w/ aspirator blower (B10/4), open circuit *)
E0 19 In-car temperature sensor w/ aspirator blower (B10/4), open circuit **)
E0 24 Left heater core temperature sensor (B10/2), short circuit *)
E0 25 Left heater core temperature sensor (B10/2), short circuit **)
E0 26 Left heater core temperature sensor (B10/2), open or short circuit *)
E0 27 Left heater core temperature sensor (B10/2), open or short circuit **)
E0 28 Right heater core temperature sensor (B10/3), short circuit *)
E0 29 Right heater core temperature sensor (B10/3), short circuit **)
E0 30 Right heater core temperature sensor (B10/3), open or short circuit *)
E0 31 Right heater core temperature sensor (B10/3), open or short circuit **)
E0 32 Outside temperature sensor (B10/5), short circuit *)
E0 33 Outside temperature sensor (B10/5), short circuit **)
E0 34 Outside temperature sensor (B10/5), open or short circuit *)
E0 35 Outside temperature sensor (B10/5), open or short circuit **)
E0 36 Evaporator temperature sensor (B10/6), short circuit *)
E0 37 Evaporator temperature sensor (B10/6), short circuit **)
E0 38 Evaporator temperature sensor (B10/6), open or short circuit *)
E0 39 Evaporator temperature sensor (B10/6), open or short circuit **)
E0 40 A/C Coolant temperature sensor (B10/8), short circuit *)
E0 41 A/C system coolant temperature sensor (B10/8), short circuit **)
E0 42 A/C system coolant temperature sensor (B10/8), open or short circuit *)
E0 43 A/C system coolant temperature sensor (B10/8), open or short circuit **)
E0 44 Refrigerant pressure sensor (B12), short circuit *)
E0 45 Refrigerant pressure sensor (B12), short circuit **)
E0 46 Refrigerant pressure sensor (B12), open or short circuit *)
E0 47 Refrigerant pressure sensor (B12), open or short circuit **)
E0 48 Left temperature selector wheel, short circuit *)
E0 49 Left temperature selector wheel, short circuit **)
E0 50 Left temperature selector wheel, open or short circuit *)
E0 51 Left temperature selector wheel, open or short circuit **)
E0 52 Right temperature selector wheel, short circuit *)
E0 53 Right temperature selector wheel, short circuit **)
E0 54 Right temperature selector wheel, open or short circuit *)
E0 55 Right temperature selector wheel, open or short circuit **)
E0 72 Heater supply unit circulation pup (A31m1), short circuit *)
E0 73 Heater supply unit circulation pup (A31m1), short circuit **)
E0 74 Heater supply unit circulation pup (A31m1), open or short circuit *)
E0 75 Heater supply unit circulation pup (A31m1), open or short circuit **)
E0 76 Heater supply unit circulation pump (A31m1), over load *)
E0 77 Heater supply unit circulation pup (A31m1), over load **)
E0 80 Heater supply unit left duovalve (A31y1), short circuit *)
E0 81 Heater supply unit left duovalve (A31y1), short circuit **)
E0 82 Heater supply unit left duovalve (A31y1), open or short circuit *)
E0 83 Heater supply unit left duovalve (A31y1), open or short circuit **)
E0 84 Heater supply unit right duovalve (A31y2), short circuit *)
E0 85 Heater supply unit right duovalve (A31y2), short circuit **)
E0 86 Heater supply unit right duovalve (A31y2), open or short circuit *)
E0 87 Heater supply unit right duovalve (A31y2), open or short circuit **)
E0 88 A/C compressor ground activation *)
E0 89 A/C compressor ground activation **)
E0 90 A/C compressor ground activation, open or short circuit *)
E0 91 A/C compressor ground activation, open or short circuit **)
E0 96 Auxiliary fan, 1st activation, short circuit *)
E0 97 Auxiliary fan, 1st activation, short circuit **)
E0 98 Auxiliary fan, 1st activation, open or short circuit *)
E0 99 Auxiliary fan, 1st activation, open or short circuit **)
E1 00 Auxiliary fan, 2nd stage activation, short circuit *)
E1 01 Auxiliary fan, 2nd stage activation, short circuit **)
E1 02 Auxiliary fan, 2nd stage activation, open or short circuit *)
E1 03 Auxiliary fan, 2nd stage activation, open or short circuit **)
E1 04 Auxiliary fan, 3nd stage activation, short circuit *)
E1 05 Auxiliary fan, 3nd stage activation, short circuit **)
E1 06 Auxiliary fan, 3nd stage activation, open or short circuit *)
E1 07 Auxiliary fan, 3nd stage activation, open or short circuit **)
E1 08 After-run pump relay (K30), power supply, short circuit *) ***)
E1 09 After-run pump relay (K30), power supply, short circuit **) ***)
E1 10 After-run pump relay (K30), power supply, open or short circuit *) ***)
E1 11 After-run pump relay (K30), power supply, open or short circuit **) ***)
E1 12 Engine rpm increase diode matrix (V2), short circuit *)
E1 13 Engine rpm increase diode matrix (V2), short circuit **)
E1 14 Engine rpm increase diode matrix (V2), open or short circuit *)
E1 15 Engine rpm increase diode matrix (V2), open or short circuit **)
E1 16 Charcoal filter actuator (A32m2) (OPEN), short circuit *)
E1 17 Charcoal filter actuator (A32m2) (OPEN), short circuit **)
E1 18 Charcoal filter actuator (A32m2) (OPEN), open or short circuit *)
E1 19 Charcoal filter actuator (A32m2) (OPEN), open or short circuit **)
E1 20 Charcoal filter actuator (A32m2) (CLOSED), short circuit *)
E1 21 Charcoal filter actuator (A32m2) (CLOSED), short circuit **)
E1 22 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit *)
E1 23 Charcoal filter actuator (A32m2) (CLOSED), open or short circuit **)
E1 28 Left rear heater core temperature sensor (B10/9), short circuit *)
E1 29 Left rear heater core temperature sensor (B10/9), short circiut **)
E1 30 Left rear heater core temperature sensor (B10/9), short or open *)
E1 31 Left rear heater core temperature sensor (B10/9), short or open **)
E1 32 Right rear heater core temperature sensor (B10/10), short *)
E1 33 Right rear heater core temperature sensor (B10/10), short **)
E1 34 Right rear heater core temperature sensor (B10/10), short or open *)
E1 35 Right rear heater core temperature sensor (B10/10), short or open **)
E1 36 Left temperature selector wheel, short *)
E1 37 Left temperature selector wheel, short **)
E1 38 Left temperature selector wheel, short *)
E1 39 Left temperature selector wheel, short or open **)
E1 40 Right temperature selector wheel, short *)
E1 41 Right temperature selector wheel, short **)
E1 42 Right temperature selector wheel, short or open *)
E1 43 Right temperature selector wheel, short or open **)
E1 44 Right evaporator temperature selector wheel (B10/11), short *)
E1 45 Right evaporator temperature selector wheel (B10/11), short **)
E1 46 Right evaporator temperature selector wheel (B10/11), short or open *)
E1 47 Right evaporator temperature selector wheel (B10/11), short or open **)
E1 48 Coolant circulation pump (A31/1m1), short *)
E1 49 Coolant circulation pump (A31/1m1), short **)
E1 50 Coolant circulation pump (A31/1m1), short or open *)
E1 51 Coolant circulation pump (A31/1m1), short or open **)
E1 52 Coolant circulation pump (A31/1m1), overload *)
E1 53 Coolant circulation pump (A31/1m1), overload **)
E1 56 Left duovalve (water value, A31/1y1, short *)
E1 57 Left duovalve (water value, A31/1y1, short **)
E1 58 Left duovalve (water value, A31/1y1, short or open *)
E1 59 Left duovalve (water value, A31/1y1, short or open **)
E1 60 Right duovalve (water value, A31/1y2, short *)
E1 61 Right duovalve (water value, A31/1y2, short **)
E1 62 Right duovalve (water value, A31/1y2, short or open *)
E1 63 Right duovalve (water value, A31/1y2, short or open **)
E1 64 Rear refrigerant shut-off valve (Y67, short *)
E1 65 Rear refrigerant shut-off valve (Y67, short **)
E1 66 Rear refrigerant shut-off valve (Y67, short or open *)
E1 67 Rear refrigerant shut-off valve (Y67, short or open **)
E1 68 Rear tunnel flap vacuum valve (Y67/1, short *)
E1 69 Rear tunnel flap vacuum valve (Y67/1, short **)
E1 70 Rear tunnel flap vacuum valve (Y67/1, short or open *)
E1 71 Rear tunnel flap vacuum valve (Y67/1, short or open **)

You might want to print it out.. It confuses the crap out of me when I try to do it...

Edited by Merc600sec 12/31/2004 1:13 PM
 

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94 s420 98 s420
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537 Posts
Discussion Starter #4
Greatly appreciated merc, thanks for saving me time and pasting this info here, i also copied and pasted it into MS Word and printed so i now have a fresh copy. I did this diagnoses on my s420 and I got every odd number code. It was kinda weird, everything functions properly. It was only odd numbers all the way up. However iam trying this today on my uncles car and i hope it solves his problem, will keep u posted if it does, thanks again.
 

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Registered
94 s420 98 s420
Joined
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537 Posts
Discussion Starter #7
Hey merc, My uncle said it stopped doing the problem after i deleted the codes not sure how true this is since i tested it then and the problem was still there but as long as hes happy.
Would yourself or anyone be able to tell me what the bar reading should be on a working ac system. I believe its diagnostic code # 7. Mine is at 10 and i wanted to know how high is that number on a working s class. if anyone with a working ac can follow the steps above and tell me what you get on number 10 which is regrigerant pressure, it would be greatly appreciated.
 
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