 |
 |
Test scope |
Test connection
|
Test condition |
Nominal value |
Possible cause/Remedy |
<
| 1.0 |
 |
Voltage supply
Circuit 15R |
|
|
X11/13
 2 |
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13).
Ignition key in position "1".
|
11-14 V
|
Wiring. |
| 2.0 |
 |
SRS control module (N2/2) |
|
|
|
Ignition: ON
Erase DTC |
DTC erased. |
SRS control module (N2/2),
(SMS, Job No. 91-620).
|
| 3.0 |
 |
Driver airbag squib (R12/3) |
3  |
X11/13
|
5 |
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13). Connect test cable according to connection diagram. Turn steering wheel from full right to full left stop. |
2-5 
|
Wiring,
< 2 short circuit,
> 5 open circuit,
Slip rings,
4-part carbon contact for slip rings,
Driver airbag (SMS, Job No. 91-660)
3.1 |
| 3.1 |
|
Isolation resistance |
|
|
|
|
> 20 k
> 20 k
|
Wiring,
Short circuit to circuit 31.
Wiring,
Short circuit to circuits 15/15R/30,
If nominal values are obtained but DTC can not be erased,
 32 1.0, 2.0
23 9.0
|
| 4.0 |
 |
Front passenger airbag squib 1 (R12/4),
squib 2 (R12/5) |
6
6
|
|
8
7
|
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13). Connect test cable according to coonnection
diagram.
|
2-5 |
< 2 short circuit,
> 5 open circuit,
Passenger side airbag,
4.1
|
| 4.1 |
|
Isolation resistance |
|
|
|
|
> 20 k
> 20 k |
Wiring,
Short circuit to circuit 31.
Wiring,
Short circuit to circuits 15/15R/30,
If nominal values are obtained but DTC can not be erased,
32 1.0, 2.0
23 10.0
|
| 5.0 |
 |
Left front seat belt buckle switch (S68/3) |
2 
2
(D.1)
|
S68/3x1
X55/3
|
 1
1
(D.1)
|
Ignition: OFF
Models 124, 201
Disconnect switch connector (S68/3x1).
Seat belt tongue in buckle:
Not latched
Latched
Model 129
Disconnect left seat contact strip (X55/3).
Seat belt tongue in buckle:
Not latched
Latched
|
400 ±10
100 ±10
400 ±10
100 ±10 |
Wiring, open circuit,
Short circuit or shorted to circuit 31,
Ground (W26),
Seat belt buckle
(SMS, Job No. 91-502). |
| 6.0 |
 |
Right front seat belt buckle switch (S68/4) |
2
2
(D.1) |
S68/4x1
X55/4
|
1
1
(D.1) |
Ignition: OFF
Models 124, 201
Disconnect switch connector (S68/4x1).
Seat belt tongue in buckle:
Not latched
Latched
Model 129
Disconnect left seat contact strip (X55/4).
Seat belt tongue in buckle:
Not latched
Latched
|
400 ±10
100 ±10
400 ±10
100 ±10 |
Wiring, open circuit,
Short circuit or shorted to circuit 31,
Ground (W26),
Seat belt buckle
(SMS, Job No. 91-502). |
| 7.0 |
 |
Front passenger airbag
Resistance |
12
|
N2/2
|
15
|
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13). Disconnect control module (N2/2) connector.
|
100 |
Wiring,
Ground (W26),
Resistance in connector to control module (N2/2). |
| 8.0 |
 |
SRS MIL (A1e15) |
|
|
|
Ignition key in position "1" |
SRS MIL (A1e15) comes on and then goes out after approx. 4 seconds |
Wiring,
SRS MIL (A1e15),
Intermittent short circuit to circuit 31 (X11/4 - A1e15),
SRS voltage supply
connector (X28/2) not connected,
Time limit for DTC readout/erase exceeded.
|
| 9.0 |
|
Wiring |
|
|
|
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13). Disconnect control
module (N2/2).
|
< 1
> 20 k |
Wiring.
Short circuit,
9.1 |
| 9.1 |
|
Isolation resistance |
|
|
|
Turn ignition key to position "1"and "2"
|
> 20 k
> 20 k |
Short to circuit 31
Short to circuits 15/15R/30 |
| 10.0 |
|
Wiring |
|
|
|
Ignition: OFF
Disconnect and cover battery negative terminal. Disconnect SRS test connection (X11/13). Disconnect control
module (N2/2). |
< 1
> 20 k |
Wiring.
Short circuit,
10.1
|
| 10.1 |
|
Isolation resistance |
|
|
|
|
> 20 k
> 20 k |
Short to circuit 31
Short to circuits 15/15R/30 |
Printable version
