 |
Test scope |
Test connection |
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Voltage supply
Circuit 15 |
9 
|
N19
 |
 7 |
Ignition: ON
|
11-14 V
|
Wiring. |
| 2.0 |
Ground circuit 31
Resistance |
 |
|
N19
9 |
Ignition: OFF
Disconnect N19 from . |
0 
|
Wiring.
|
| 3.0 |
In-car temperature
sensor (B10/4)
Voltage |
9 |
N19
|
12
|
Ignition: ON
Temperature selector:
Red range detent
|
°C V
20 1.9
|
Wiring,
B10/4
|
| 3.1 |
In-car temperature
sensor (B10/4)
Resistance |
12 |
N19
 |
2
|
Ignition: OFF
Disconnect N19 from .
|
°C k
20 2.1
25 1.7
40 0.9
|
Wiring,
B10/4
|
| 4.0 |
Icing protection temperature sensor (R35)
Voltage |
9 |
N19
|
11 |
Ignition: ON |
°C V
0 2.0 - 2.4
15 1.4 - 1.8
|
Wiring,
R35
|
| 4.1 |
Icing protection temperature sensor (R35)
Resistance |
11 |
N19
|
3 |
Ignition: OFF
Disconnect N19 from . |
°C k
6 3.6
15 2.3
22 1.7
25 1.5
|
Wiring,
R35
|
| 5.0 |
Activation voltage
Temperature reduction
Voltage
|
9
|
N19
|
2 |
Ignition: ON
Temperature selector:
From blue range detent
turn temperature selector to red detent stop
|
>2 V
>3 V |
Wiring,
S98s2 |
| 5.1 |
Activation voltage
Temperature increase
Voltage
|
9
|
N19
|
5 |
Ignition: ON
Temperature selector:
From blue range detent
turn temperature selector to red detent stop
|
>3 V
>4 V |
Wiring,
S98s2 |
| 6.0 |
Actuator motor
Blend air flap actuator motor (M16/8)
Voltage |
9 |
N19
|
1 |
Ignition: ON
Temperature selector:
From blue range detent
turn temperature selector to red detent stop
|
<1V
11-14 V |
Wiring,
M16/8
|
| 6.1 |
Actuator motor
Blend air flap actuator motor (M16/8)
Resistance
|
8 |
N19
|
1 |
Ignition: OFF
Disconnect N19 from . |
0.12 k |
Wiring,
M16/8
|
| 7.0 |
Actuator motor
Blend air flap actuator motor (M16/8) |
9 |
N19
|
8 |
Ignition: ON
Temperature selector:
From Red range detent stop
turn temperature selector to blue detent |
<1 V
11-14 V
|
Wiring,
M16/8 |
| 8.0 |
Activation of:
A/C switch (S98s3) to A/C pushbutton control
module (N19)
Voltage |
9 |
N19
|
10 |
Ignition: ON
 button is illuminated.
Blower stage 4
button is not illuminated, OR
Blower stage= 0 |
<1 V
11 - 14 V
|
Wiring,
S98s3
|
| 8.1 |
Activation of:
A/C pushbutton control module (N19) to All Activity Module (N10)
Voltage
|
9
11 |
|
4
4 |
Ignition: ON
button is illuminated.
Blower stage 4
Insert bridge:
124 589 37 63 00
|
>3 V
<1 V |
Wiring,
N19 |
| 9.0 |
Refrigerant pressure
sensor (B12) |
A |
B12
|
B |
Disconnect refrigerant pressure sensor connector
Ignition: ON
|
4.75-5.25 V
|
Wiring,
B12,
N10 |
| 10.0 |
Outside temperature sensor
(B10/5)
Resistance
(as of 12/99) |
3 |
N19
|
12 |
Ignition: OFF
Disconnect N19 from
|
°C k
20 2.1
25 1.7
40 0.9
50 0.6
|
Wiring,
B10/5 |
Printable version
