Automatic climate control (IHKA)
Scheme 6450.0
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A=X610 | 26-pin, white B=X611 26-pin, green |
C=X613 | 26-pin, blue |
D=X614 | 26-pin, yellow |
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Pin | Type | Description/Function | Connection |
1 | A | Signal, rear compartment | Rear actuator motor |
2 | A | Signal, rear compartment | Rear actuator motor |
3 | A | Signal, rear compartment | Rear actuator motor |
4 | A | Signal, rear compartment | Rear actuator motor |
5 | A | Blower ON | Blower output stage |
6 | A | Signal, air conditioning ON | A/C relay |
7 | A | Signal, rear window defogger ON | Rear window defogger relay |
8 | A | Signal, compressor ON | Pressure switch B8y |
9 | not used | ||
10 | not used | ||
11 | not used | ||
12 | E | Terminal 30 | Fuse |
13 | E | Terminal 30 | Fuse |
14 | A | Signal, recirculated air | Recirculated air flap motor |
15 | A | Signal, recirculated air | Recirculated air flap motor |
16 | A | Signal, recirculated air | Recirculated air flap motor |
17 | A | Signal, recirculated air | Recirculated air flap motor |
18 | A | Activation, lights | IHKA operating unit |
19 | A | Activation, rear window defogger lights | IHKA operating unit |
20 | E/A | TxD diagnosis line | Diagnostic connector |
21 | A | Activation, left water valve | Left water valve |
22 | A | Activation, auxiliary water pump | Auxiliary water pump relay |
23 | A | Activation, right water valve | Right water valve |
24 | not used | ||
25 | E | Terminal 30 | Fuse |
26 | E | Terminal 30 | Fuse |
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Pin | Type | Description/Function | Connection |
1 | A | Signal, left footwell | Left footwell actuator motor |
2 | A | Signal, left air mixing | Mixing air flap motor, left |
3 | A | Signal, left air mixing | Mixing air flap motor, left |
4 | A | Signal, left air mixing | Mixing air flap motor, left |
5 | A | Signal, left air mixing | Mixing air flap motor, left |
6 | A | Activation, fresh air | Fresh air flap motor |
7 | A | Activation, fresh air | Fresh air flap motor |
8 | A | Activation, fresh air | Fresh air flap motor |
9 | A | Activation, fresh air | Fresh air flap motor |
10 | not used | ||
11 | not used | ||
12 | not used | ||
13 | not used | ||
14 | A | Signal, left footwell | Left footwell actuator motor |
15 | A | Signal, left footwell | Left footwell actuator motor |
16 | A | Signal, left footwell | Left footwell actuator motor |
17 | A | Signal, defrost | Defroster flap motor |
18 | A | Signal, defrost | Defroster flap motor |
19 | A | Signal, defrost | Defroster flap motor |
20 | A | Signal, defrost | Defroster flap motor |
21 | A | Signal, left-hand ventilation | Ventilation flap motor |
22 | A | Signal, left-hand ventilation | Ventilation flap motor |
23 | A | Signal, left-hand ventilation | Ventilation flap motor |
24 | A | Signal, left-hand ventilation | Ventilation flap motor |
25 | not used | ||
26 | not used |
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Pin | Type | Description/Function | Connection |
1 | M | Ground | Ground connection |
2 | M | Ground | Ground connection |
3 | not used | ||
4 | A | Setpoint, left-hand temperature | IHKA operating unit |
5 | A | Setpoint, blower | IHKA operating unit |
6 | A | Interior sensor blower motor | Interior sensor blower motor |
7 | E | Outside temperature | Outside temperature sensor |
8 | A | Setpoint, right-hand temperature | IHKA operating unit |
9 | E | Evaporator temperature | Evaporator sensor |
10 | A | Voltage supply of actuator motors | All actuator motors |
11 | A | Voltage supply of actuator motors | All actuator motors |
12 | E | Terminal 15 | Fuse |
13 | E | Terminal 15 | Fuse |
14 | M | Ground | Ground connection |
15 | M | Ground | Ground connection |
16 | M | Ground for all sensors | All temperature sensors |
17 | A | Setpoint, mixing air | Mixing air actuator |
18 | E | Left heat exchanger temperature | Left heat exchanger sensor |
19 | E | Terminal 30 h | Alternator |
20 | M | Ground for potentiometer | IHKA operating unit, mixing air control |
21 | E | Interior temperature | IHKA operating unit |
22 | E | Right heat exchanger temperature | Heat exchanger sensor |
23 | A | Voltage supply of actuator motors | All actuator motors |
24 | A | Voltage supply of actuator motors | All actuator motors |
25 | E | Terminal 15 | Fuse |
26 | E | Terminal 15 | Fuse |
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Pin | Type | Description/Function | Connection |
1 | A | Signal, right footwell | Right footwell actuator motor |
2 | A | Signal, right footwell | Right footwell actuator motor |
3 | A | Signal, right footwell | Right footwell actuator motor |
4 | A | Signal, right footwell | Right footwell actuator motor |
5 | E | Signal, recirculated air | IHKA operating unit |
6 | E | Signal, defrost | IHKA operating unit |
7 | E | Signal, rear window defogger | IHKA operating unit |
8 | E | Signal, normal program | IHKA operating unit |
9 | E | Speedometer A signal | Instrument cluster |
10 | A | RxD diagnosis line | Diagnostic connector |
11 | A | Voltage supply for defrost/ independent heating | IHKA operating unit |
12 | A | Voltage supply, interior ventilation/ recirculated air/independent heating | IHKA operating unit |
13 | A | Voltage supply footwell/recirculated air/ rear window defogger | IHKA operating unit |
14 | A | Signal, right-hand ventilation | Right ventilation flap motor |
15 | A | Signal, right-hand ventilation | Right ventilation flap motor |
16 | A | Signal, right-hand ventilation | Right ventilation flap motor |
17 | A | Signal, right-hand ventilation | Right ventilation flap motor |
18 | A | Signal, right air mixing | Mixing air flap motor, right |
19 | A | Signal, right air mixing | Mixing air flap motor, right |
20 | A | Signal, right air mixing | Mixing air flap motor, right |
21 | A | Signal, right air mixing | Mixing air flap motor, right |
22 | not used | ||
23 | not used | ||
24 | not used | ||
25 | not used | ||
26 | not used |