Tes t p r o g r am - El ec t r i c s t
A
1.0 1.0
Tes t i n g
Scope of test
Measuring equipment/ test connection
Pushbutton Pushbutton control module ((Tempmati ((Tempmati c) A/C, N19/1) Voltage supply Term Terminal inal 30
1.1
N19/1
19 w
Terminal 30
19 w
Scope of test
003
In-car In-car temperature sensor with aspir ator blower (B10/4) (B10/4) Voltage
005
19 w
Resistance
007 008 009
Outside temperature sensor (B10/5) Voltage
19 w
Resistance
Tes t pr pr o g r am - El ec t r i c s Scope of test
6.0 6.0
0I9 020
Evaporator temperature sensor (B10/6)
02I
Voltage
022
c
k L 11
k c
11-14 V
Cables
Oper Opera ation ion/re /requirem irement ent
Spec Specif ifie ied d value lue
Possi Possib ble cau cause/r se/rem emedy edy
k to plug 1, left
°C
V
Cables
Ignition: ON
10
3.2-3.5
t 4.1
20
2.6-2.9
P ushbutton control module (N19/1)
30
2.0-2.4
45
1.3-1.7
Ignition: ON
L 20
k b
k c
k b
Ignition: OFF
°C
kW
Cables
k to plug 1, left
10
19.0-21.0
B10 B10/4
20
11.9-13.0
30
7.7-8.4
45
4.2-4.6
L 20 Disconnect N19/1 from k k to plug 1, left
°C
V
Cables
Ignition: ON
10
3.2-3.5
t 5.1
20
2.6-2.9
P ushbutton control module (N19/1)
30
2.0-2.4
45
1.3-1.7
Ignition: OFF
°C
kW
Cables
k to plug 1, left
10
5.2-5.8
B10 B10/5
20
3.2-3.6
30
2.0-2.3
45
1.1-1.25
L 21
L 21 Disconnect N19/1 from k
Measuring equipment/ test connection N19/1
19 w
Resistance
Left heat exchanger temperature sensor (B10/2)
k c
N19/1
19 w
0II
Cables
Tes t i n g
A
0I2
11-14 V
L9
N19/1
t
6.1
Cables
Ignition: ON
N19/1
19 w
7.0 7.0
k c
11-14 V
k to plug 2, right
N19/1
0I0
5.1
Term Terminal inal 31
k L8
N19/1
19 w
5.0 5.0
Cables
L8
Measuring equipment/ test connection
006
4.1
11-14 V
Tes t i n g
A 004
k to plug 2, right
N19/1 k to plug 1, left
ow
4.0 4.0
c
Voltage supply terminal 15 x
Tes t pr pr o g r am - El ec t r i c s
Possi Possib ble cau cause/r se/rem emedy edy
t 1.1
N19/1
Voltage supply terminal 15
3.0 3.0
Spec Specif ifie ied d value lue
N19/1
o 2.0 2.0
t
k c
Oper Opera ation ion/re /requirem irement ent
k b
Oper Opera ation ion/re /requirem irement ent
Spec Specif ifie ied d value lue
Possi Possib ble cau cause/r se/rem emedy edy
k to plug 1, left
°C
V
Cables
Ignition: ON
0
2.2-2.6
t 6.1
10
1.6-2.0
P ushbutton control module (N19/1)
20
1.2-1.5
30
0.8-1.1
45
0.5-0.7
L 22
Ignition: OFF
°C
kW
Cables
k to plug 1, left
0
7.3-10.0
B10 B10/6
10
4.2-6.0
20
2.8-3.9
30
1.7-2.6
45
1.0-1.5
L 22 Disconnect N19/1 from k
N19/1
k to plug 1, left
°C
V
Cables
k
Ignition: ON
10
3 1-3 5
t 7.1
7.1
Resistance
N19/1
19 w
Test program - Electrics
A
Scope of test
8.0
0I5
Right heat exchanger temperature sensor (B10/3)
0I7
°C
kW
Cables
k to plug 1, left
10
19.0-21.2
B10/2
20
11.9-13.2
30
7.7-8.4
45
4.2-4.6
L 23 Disconnect N19/1 from k
Testing
t
0I6
k b
Ignition: OFF
Measuring equipment/ test connection
Voltage
N19/1
19 w
k c
Operation/requirement
Specified value
Possible cause/remedy
k to plug 1, left
°C
V
Cables
Ignition: ON
10
3.1-3.5
t 8.1
20
2.6-2.9
Pushbutton control module (N19/1)
30
2.0-2.4
L 14
0I8
8.1
Resistance
N19/1
19 w
9.0
023 024
Coolant temperature sensor (climate contro l) (B10/8)
025
Voltage
9.1
Resistance
A
Scope of test
10.0
027
A/C pr essu re sen sor (B12)
N19/1
Voltage 19 w
030
Voltage
03 I
k c
19.0-21.2
20
11.9-13.2
30
7.7-8.4
45
4.2-4.6
B10/3
k to plug 1, left
°C
V
Cables
Ignition: ON
20
4.3-4.7
t 9.1
60
2.9-3.6
Pushbutton control module (N19/1)
85
2.0-2.5
100
1.6-1.9
120
1.0-1.4
Ignition: OFF
°C
kW
Cables
k to plug 1, left
20
5.0-8.0
B10/8
60
1.0-1.5
85
0.46-0.65
100
0.3-0.4
120
0.19-0.22
k c
27 w
k f
Specified value
Possible cause/remedy
k to plug 1, left
°C
V
Cables
Ignition: ON
2
0.5-0.75
B12
10
1.4-1.8
t 10.1
18
2.4-2.8
Pushbutton control module (N19/1)
28
3.5-4.0
k to plug 1, left
4.75-5.25 V
Cables B12
Ignition: ON
N19/1
L7 k to plug 1, left
N19/1
A/C co mpr ess or c ut-o ut
032
Operation/requirement
L 16
N19/1
19 w 11.0
10
L 24 Disconnect N19/1 from k
Measuring equipment/ test connection
029
10.1
k to plug 1, left
Cables
Testing
t
028
k b
kW
L 24
N19/1
19 w
Test program - Electrics
k c
1.3-1.7
°C
L 14 Disconnect N19/1 from k
N19/1
19 w
026
k b
45 Ignition: OFF
>0.18 VX
Cables t 11.1
Engine: at idle
L 26 25 u 9
to plug 2, right (Figure 1) 11.1
Speed sensor (A9l1)
27 w 12.0
k b
o
c
180-410 W
Cables A9l1
L 26 N19/1 k to plug 1, left
Diagnosis output
Test program - Electrics
Disconnect k from Pushbutton control module (N19/1)
N19/1
k L1
11-14 V
Cables Pushbutton control module (N19/1)
Ignition: ON
Testing
t
A
Scope of test
13.0
059 060
Ac tuat io n of A/C c omp ress or (A9)
06I
Voltage
Measuring equipment/ test connection
o
c
Operation/requirement
Specified value
Possible cause/remedy
N19/1 k to plug 2, right
Cables
k engine at idle L 25 A/C compressor:
t 11.0
B
<1 V
A/C compressor:
z
11-14 V
062
Pushbutton control module (N19/1)
14.0
Diesel engine only (not on EIFI/EDFI) A/C co mpr ess or c ut out/exhaust gas recirculation (EGR) microswit ch (S27/6) Voltage
15.0
07I
Gasoline engine only
072
Idle speed increase
073
Voltage
N19/1
2w
o
k c
c
047 048
Hot water circulation pump (M13)
049
Voltage
t
A
16.1
N19/1 k to plug 2, right Engine at idle
<1 V
k L 10
Operate button z
Cables
o
c
Pushbutton control module (N19/1)
9-14 V
nach >15 s
t 16.1 Cables
k L 20 Both temperature selectors Ignition: ON
Pushbutton control module (N19/1)
engaged in RED position
<1 V
BLUE position engaged
11-14 V
Operation/requirement
Specified value
Possible cause/remedy
Ignition: OFF
2-4 W
M13
Testing
Scope of test
Measuring equipment/ test connection
Resistance 063
11-14 V <1 V
N19/1 k to plug 2, right
M13 2/1 v
17.0
S27/6
L 11 Release accelerator pedal
050
Test program - Electrics
Cables
Engine at idle Accelerator pedal in full throttle position
074
16.0
k to plug 1, left
b
N19/1 k to plug 2, right
Aux il iary fan M4 s tage 1
064
o
065
K 2/2 Disconnect coupling from M13
c
k Ignition: ON L 16 Auxiliary fan stage 1: OFF
Cables 11-14 V
Pushbutton control module (N19/1)
066
1w
B10/8
Ignition: OFF
B
L 2 Disconnect coolant temperature sensor (B10/8) Adjust resistance value from 310 W
Operate auxiliary fan (M4) stage 1
N19/1
o 17.1
Auxiliary fan M4 stage 1
c
k L 16 Ignition: ON
B10/8 1w
B
<1 V
t 17.1
Specified value
Possible cause/remedy
Ignition: OFF
L 2 Adjust resistance value of 310 W Auxiliary fan relay (K9) pulled
Test program - Electrics t
A
Testing
Scope of test
Measuring equipment/ test connection
Operation/requirement
K9
[17.1]
o
c
L 2/5 Ignition: ON
6.5-7.5 V
Cables Auxiliary fan (M4)
K9 2/5 w
c
L 2/1 Ignition: ON
2.5-3.5 V
Cables Auxiliary fan series resistor (R15)
R15/1 1w
18.0
067
b
<1 W
N19/1 k to plug 2, right
Aux il iary fan M4 s tage 2
068 069
L 2 Ignition: OFF
k L 7 Auxiliary fan, stage 2: OFF
t 18.1
Ignition: ON
o
c
11-14 V
070
B10/8 1w
B
L 2 Ignition: OFF Coolant temperature sensor (climate control) (B10/8) Adjust resistance value of 250 W N19/1
o
c
k L 14 Ignition: ON
Auxiliary fan series resistor, 1st stage (R15/1) Auxiliary fan relay (K9)
Stage 2 operates <1 V
Test program - Electrics t
A
18.1
Testing
Scope of test
Measuring equipment/ test connection
Auxiliary fan M4 stage 2
Operation/requirement
Specified value
K9 Ignition: OFF
o
c
11-14 V
L 1 Auxiliary fan relay (K9) pulled
Auxiliary fan M4 stage 2
K9 2/1 w
19.0
b
t 18.2 <1 W
Ignition: OFF
L 2/5 Auxiliary fan relay (K9) pulled
Cables Auxiliary fan series resistor (R15)
055
Right duo valve (Y21y2)
N19/1 k to plug 2, right
Cables
056
Voltage
k Ignition: ON L 12 Both temperature selectors
t 19.1
o
057
c
058
19.1
Right/left duo valve Resistance
N19/1 12 w
Test program - Electrics
k b
A
Scope of test
20.0
05I
Left duo valve (Y21y1)
052
Voltage
11-14 V
engaged in BLUE position
<1 V
Ignition: OFF
20-35 W
Y21
Specified value
Possible cause/remedy
Disconnect control module
L 21 from k
Measuring equipment/ test connection
Operation/requirement
N19/1 k to plug 2, right Ignition: ON
o
053
c
Voltage
o
077
11-14 V
BLUE position engaged
<1 V
c
708
22.1
Valve - diverter flap
15 w
Resistance
A
Scope of test
23.0
079
Valve block (4 connections) (Y11) Valve - blend flap Voltage
08I
k b
1
0.7-1.1 V
2
1.6-2.0 V
3
2.4-3.0 V
4
3.2-4.0 V
5
5.0-6.0 V <1 V
Ignition: ON
Cables t 22.1
L 18 Disconnect k from pushbutton control module (N19/1)
45-65 W
Cables
Operation/requirement
Specified value
Possible cause/remedy
k to plug 2, right
11-14 V
Cables
L 18
Testing
t
080
k to plug 2, right
N19/1
15 w
Test program - Electrics
k c
Pushbutton control module (N19/1)
k L 1 Blower switch
N19/1
Valve block (4 connections) (Y11)
Voltage
Pushbutton control module (N19/1)
engaged in RED position
Stage
076
t 19.1
N19/1 k to plug 2, right Ignition: ON
Blower regulator (A32n1)
075
Cables
k L 21 Both temperature selectors
054
21.0
Pushbutton control module (N19/1)
engaged in RED position
Testing
t
22.0
Cables Auxiliary fan relay (K9)
Ignition: ON 18.2
Possible cause/remedy
Measuring equipment/ test connection N19/1
6w
k c
t 23.1
Ignition: ON
L 18
082
23.1
Resistance
N19/1
6w 24.0
083 084 085 086
24.1
5w
Resistance
k c
5w
45-65 W
k to plug 2, right
<1 V
Cables
Cables t 24.1
Ignition: ON
L 18 Disconnect k from pushbutton control module (N19/1)
N19/1
k b
Disconnect k from pushbutton control module (N19/1)
L 18
N19/1
Valve block (4 connections) (Y11) Valve - recirculated air long s troke (80%) Voltage
k b
L 18
48-51 W
Cables
t
A
Scope of test
25.0
087
Valve block (4 connections) (Y11)
088 089 090
25.1
Measuring equipment/ test connection
Valve - recirculated air short stroke (20%) Voltage
N19/1
4w
Resistance
k to plug 2, right
<1 V
Possible cause/remedy
Cables t 25.1
L 18 Disconnect k from pushbutton control module (N19/1)
k b
45-65 W
Cables
N19/1 k to plug 1, left
Gasoline engine
Cables
k L 25
5-7.5 V
L 18
Speed sig nal TN
ow
Specified value
Ignition: ON
N19/1
4w 26.0
k c
Operation/requirement
c
Engine at idle
Diesel engine 5.0F 0.5 V
Test program - Electrics
Testing
P83-5686-13
P83-5605-13
P83-5684-13
Figure 1
Figure 2
Figure 3
Bridge between terminal 9 and 25 on plug 2, right
W1
W16/3G round, component compartment left, common ground
Test program - Electrics
Main ground (behind instrument cluster)
Testing
P83-5685-13
P83.30-0232-01
P83-5600-13
Figure 4
Figure 5
Figure 6
W16/4 Ground, component compartment right, common ground
X4
X11/4
Test program - Electrics
Terminal block, terminal 30 (3-pin), left footwell
Testing
P54-6480-13
P83-5674-13
Figure 7
Figure 8
X24
Headlamp harness connector (6-pin)
X26/25
X26
Interior/engine connector
Engine/body connector (24-pin)
Test coupling for diagnosis, pulse readout(38-pin)
