[AlexanderA]

Tja,

Har ett litet problem med ECC;n på min 940. Problemet är att den bara blåser full kyla eller full värme. Har kollat på andra trådar men inte hittat något liknande.

Min gissning är någon tempgivare som är sönder men vet inte säkert.

Någon som haft samma problem som vet hur man löser de?

[Ulf965]

Det verkar ju förekomma någon form av reglering då du får kall och varm luft. Börja med att lossa taklampan för att kolla om tempgivaren där är full med damm, om detta är fallet rengör och se om det blir bättre.
Försök följa denna text om hur man tar ut felkoder på ECC system:
ECC Climate Unit Diagnostic Codes.
The ECC climate unit in air conditioning-equipped cars can detect certain system faults and display the appropriate diagnostic trouble code by flashing the lamp in the A/C button. If the control module detects one or more faults, the driver is warned by the flashing A/C button. If a fault is major, the lamp will flash continuously while the engine is running; if minor, the lamp will flash for 20 seconds after the engine is started. To read the diagnostic trouble codes, the engine must be running; the blower selector in AUTO setting; the function selector in VENT setting; the temperature switch set to maximum cooling; the recirculation switch pressed in; and the A/C switch released (out). Shine a strong light on the solar sensor in the dash speaker; otherwise, the DTC for the sensor will be displayed even if fault-free. Retrieve the DTCs by pressing the A/C button in and releasing it within 5 seconds. If several DTCs are stored, they will be displayed sequentially. All will be erased when the ignition is turned off. If no faults are set, then 1-1-1 will be displayed. Note that faults may be in the component or in its wiring.
To diagnose cars with ECC but without air conditioning, no trouble light will illlumine; the system will fail. Remove the ECC module from the dash panel, take off the cover plate and press the diagnostic test button twice within 5 seconds. Read the DTCs from the nearby LED lamp, pressing the button after each DTC to read any more codes.
Table of ECC Diagnostic Trouble Codes.
[Fault Classes: A: Serious; M: Minor; I: No warning to driver]
DTC
Fault Component & Description
Fault Class



1-1-1
Fault-free


Ambient temperature sensor (on blower housing):

1-2-1
Short-circuit to ground
A
1-2-2
Open circuit or short-circuit to 12V
A

Interior temperature sensor (in roof light):

1-3-1
Short-circuit to ground
A
1-3-2
Open circuit or short-circuit to 12V
A

Coolant temperature sensor (in heater):

1-4-1
Short-circuit to ground
M
1-4-2
Open circuit or short-circuit to 12V
M

Generator:

1-5-1
D+ signal level in generator
A

Solar sensor (in speaker grill)

1-6-1
(Note: illuminate this with a lamp to clear code)
I

Servomotor/potentiometer:

2-1-1
Open circuit or short-circuit to ground
A
2-1-2
Short-circuit to 12V
A

Servomotor Drive:

2-1-3
Pin 17 or 18 connected incorrectly to 12V
A

Servomotor:

2-1-4
Motor activated for too long > 10 seconds
(blocked motor or failure of motor supply)
A

ECC Control Panel:

2-3-1
Faulty temperature control
A

Blower Motor:

2-3-3
Starting current too high, motor seizes or turns sluggishly
A

Power terminal incorrectly connected to


12 V for the solenoids as follows:

2-4-1
Water valve
A
2-4-2
Bi-level
A
2-4-3
Vent
A
2-4-4
Recirculation
A
2-4-5
Defroster
A
2-4-6
Floor
A
2-4-7
Maximum blower relay
A
2-4-8
Compressor
A
2-4-9
Blower relay (cars with air conditioning)
A
2-4-9
Engine cooling fan relay (cars without a/c)
A

[AlexanderA]

@Ulf965,

Jadu, svårt att kolla efter da när ingen finns där hahah. Får ta och införskaffa mig en ny så ska det väll funka.

Tack för hjälpen!