Diagnostic Manual, Info./Comm., Volume 1
Electrical Test Program - Test Model
 |
Test scope |
Test connection
|
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Instrument cluster (A1)
Voltage supply
Terminal 30
|
3 
(1A.3)
12
(1A.12) |
A1
|
 11
(1A.11)
11
(1A.11)
|
Ignition: OFF
Remove A1
Disconnect connector 1
(30-pin) |
11 - 14 V |
Fuse 14 in fuse and relay box (F1),
Wiring,
1.1 |
| 1.1 |
Voltage supply
Terminal 15, fused |
3
(1A.3) |
A1
|
9
(1A.9) |
Ignition: ON |
11 - 14 V |
Fuse 10 in fuse and relay box (F1),
Wiring,
A1
|
| 2.0 |
HHT interface
Connection between A1 and data link connector (X11/4) |
X11/4
15
|
|
A1
11
(1B.11) |
Ignition: OFF
Remove A1,
Disconnect connector 1
(30-pin)
|
 5 
|
Wiring. |
| 3.0 |
ECL and windshield washer level:
ECL level switch (S41), windshield washer level switch (S42) and wiring |
6
(1B.6) |
A1
 |
4
(1B.4) |
Ignition: OFF
Coolant level and windshield washer fluid level: OK
Remove instrument cluster (A1)
Disconnect connector 1 (30 pin). |
233 - 297
|
Wiring
3.1
Values O.K.:
A1
|
| 3.1 |
ECL switch (S41) |
1  |
S41
|
 2 |
Ignition: OFF
Remove expansion tank
Disconnect connector at ECL switch (S41).
Coolant level OK
|
102 - 120
|
S41
Values O.K.:
3.2 |
| 3.2 |
Windshield washer fluid level switch (S42) |
1 |
S42
|
2 |
Ignition: OFF
Disconnect connector at S42.
Washer fluid level OK |
145 - 185
|
S42 |
| 4.0 |
CAN bus data lines
Resistance |
1
(1B.9) |
A1
|
10
(1B.10) |
Ignition: OFF
Disconnect connector 1
(All control modules are connected to CAN)
|
around 60 |
CAN:  , 
N47
N3
Values O.K.:
4.1 |
| 4.1 |
CAN bus data lines
Voltage Low-data line |
|
|
A1
9
(1B.9) |
Ignition: ON
|
around 2.3 V |
N47
N3
Values O.K.:
4.2 |
| 4.2 |
CAN bus data lines
Voltage High-data line |
|
|
A1
10
(1B.10) |
Ignition: ON
|
around 2.6 V |
N47
N3 |
 |
|
Printable version
