Test step
|
DTC |
Test scope
|
Test connection
|
Test condition
|
Nominal value
|
Possible cause/Remedy
|
| 1.0 |
|
ABS control module (N30)
Voltage supply
Circuit 87 ABS
|
40 
21 |
|
 24 24 |
Ignition: ON
|
11 - 14 V |
 1.1
|
| 1.1 |
|
Voltage supply from base module (N16/1)
|
W16/1
|
|
N30
 24 |
Ignition: ON |
11 - 14 V |
Fuse (F1) at base module, N16/1),
Volume 1, 1.1 or 1.2  23, respectively,
Wiring,
1.2.
|
| 1.2 |
|
Ground wire
|
|
Model 124.034, 129
Model 140
|
|
Ignition: ON
Pull out ABS control module out of contact box |
< 1  |
Wiring,
Model 124.034, 129
Ground (module box bracket) (W27),
Model 140
Ground (electronics output ground - right footwell) (W15). |
| 2.0 |
|
ABS malfunction indicator lamp (MIL) (A1e17) |
40
|
N30
|
7
|
Ignition: ON
Engine: At idle
|
< 2 V
A1e17: ON
10 - 14 V
A1e17: OFF
|
Wiring,
A1e17,
2.1.
DTC memory 11,
Wiring,
ABS control module (N30).
|
| 2.1 |
|
Diode in solenoid valve
relay (A7k1) |
|
|
|
Engine: OFF
Pull ABS control module (N30) out of contact box.
Ignition: ON
Engine: At idle
|
A1e17: ON
A1e17: ON
|
Wiring,
A7k1.
|
| 3.0 |
|
Diagnosis output |
40
|
N30
|
26
|
Ignition: ON
|
10 - 14 V
|
Wiring,
ABS control module (N30).
|
| 4.0 |
|
Circuit 61 voltage |
40
|
N30
|
4
|
Ignition: ON
Engine: At idle
|
< 1 V
11 - 14 V
|
Wiring,
Generator (G2)
|
5.0
|
 |
Solenoid valve relay (A7k1)
Activation
Monitoring |
36
40
|
|
15
41
|
Ignition: ON |
10 - 14 V
11 - 14 V
|
DTC memory 11, readout DTC's, clear DTC's,
5.1. |
| 5.1 |
|
Voltage supply |
40
|
N30
|
15
|
Ignition: ON |
11 - 14 V
|
1.0,
Wiring,
ABS control module (N30),
5.2.
|
| 5.2 |
|
Coil resistance |
36
|
N30
|
15
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
40 - 80 |
Wiring,
Solenoid valve relay (A7k1),
5.3.
|
| 5.3 |
|
Operational contact |
|
|
N30
41 |
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
< 1
|
Wiring,
Solenoid valve relay (A7k1).
|
| 6.0 |
 |
Return pump relay (A7k2)
Voltage supply
|
40
|
N30
|
15
|
Ignition: ON |
11 - 14 V |
Wiring,
6.1,
Return pump (A7m1).
|
| 6.1 |
|
Coil resistance |
15
|
N30
|
35
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
40 - 80 |
Wiring,
Return pump relay (A7k2).
|
7.0
(Models 140.04/05 only)
|
 |
Master cylinder switchover valve (ABS) (Y61)
Internal resistance
|
41
|
N30
|
38
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
7 - 8 |
Wiring,
Y61.
|
8.0
(Models 140.04/05 only )
|
 |
Lateral acceleration
sensor (B24/2)
Voltage supply
Sensor signal in rest position
Sensor signal
|
|
|
|
Ignition: ON
Vigorously shake vehicle sideways.
|
4.75 - 5.25 V
2.35 - 2.65 V
> 0.01 V~
Note:
Value varies with movement.
|
Wiring,
B24/2,
8.1 |
| 8.1 |
|
Voltage supply at sensor input |
23
|
N30
|
1
|
Ignition: OFF
Unplug connector from lateral acceleration
sensor (B24/2).
|
4.75 - 5.25 V
|
Wiring,
ABS control module (N30).
|
| 9.0 |
 |
Stop lamp switch (S9/1)
N. O. contact
N. C. contact
|
40
40
|
|
27
5
|
Ignition: ON
Brakes not applied
Brakes applied
Brakes not applied
Brakes applied
|
< 1 V
11 - 14 V
11 - 14 V
< 1 V
|
Wiring,
S9/1. |
10.0
|
 |
Left front axle vehicle speed sensor (L6/1) |
34
|
N30
|
14
|
Lift front of vehicle.
Ignition: ON
Turn left front wheel by hand.
|
> 0.1 V~ |
10.1,
10.2. |
| 10.1 |
|
Insulation resistance
|
40
|
N30
|
14
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
>20 k |
Wiring.
|
| 10.2 |
|
Internal resistance
|
34
|
N30
|
14
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.8 - 3.7 k
|
Wiring,
L6/1. |
| 11.0 |
|
Left front axle vehicle speed sensor output |
40
|
N30
|
3
|
Lift front of vehicle.
Ignition: ON
Turn left front wheel by hand.
|
> 3 V~ |
Wiring,
10.0,
11.1. |
| 11.1 |
|
Circuit loading from connected control modules |
40
|
N30
|
3
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
>5 k |
Wiring,
Connected control modules
(N4/3, N10/2, N22 or A1, A2, A2/3). |
12.0
|
|
Right front axle vehicle speed sensor (L6/2) |
13
|
N30
|
33
|
Lift front of vehicle.
Ignition: ON
Turn right front wheel by hand.
|
> 0.1 V~ |
12.1,
12.2.
|
| 12.1 |
|
Insulation resistance
|
40
|
N30
|
33
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
>20 k |
Wiring. |
| 12.2 |
|
Internal resistance
|
13
|
N30
|
33
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.8 - 3.7 k
|
Wiring,
L6/2. |
| 13.0 |
|
Right front axle vehicle speed sensor output |
40
|
N30
|
25
|
Lift front of vehicle.
Ignition: ON
Turn right front wheel by hand.
|
> 3 V~ |
Wiring,
12.0,
13.1. |
| 13.1 |
|
Circuit loading from connected control modules |
40
|
N30
|
25
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
>5 k |
Wiring,
Connected control modules,
(N16/1, N30/2, N51). |
14.0
|
|
Rear axle vehicle speed sensor (L6) |
30
|
N30
|
9
|
Lift rear of vehicle.
Ignition: ON
Turn one rear wheel by hand.
|
> 0.1 V~ |
14.1,
14.2.
|
| 14.1 |
|
Insulation resistance
|
40
|
N30
|
9
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
>20 k |
Wiring,
|
| 14.2 |
|
Internal resistance
|
30
|
N30
|
9
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.6 - 3.2 k
|
Wiring,
Rear axle vehicle speed sensor (L6). |
| 15.0 |
|
Rear axle vehicle speed sensor output |
40
|
N30
|
6
|
Lift front of vehicle.
Ignition: ON
Turn one rear wheel by hand.
|
> 3 V~ |
14.0,
15.1. |
| 15.1 |
|
Circuit loading from connected control modules |
40
|
N30
|
6
|
Pull ABS control module (N30) out of contact box.
Ignition: ON
Turn one rear wheel by hand.
|
>5 k
|
Wiring,
Connected control modules,
(N4/3, N30/2, N49/1). |
| 16.0 |
|
Left front axle solenoid
valve (A7y1)
Internal resistance |
22
|
N30
|
41
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.7 - 2.2 k
|
Wiring,
ABS hydraulic unit (A7). |
| 17.0 |
|
Right front axle solenoid valve (A7y2)
Internal resistance |
20
|
N30
|
41
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.7 - 2.2 k |
Wiring,
ABS hydraulic unit (A7). |
| 18.0 |
 |
Rear axle solenoid
valve (A7y3)
Internal resistance |
17
|
N30
|
41
|
Ignition: OFF
Pull ABS control module (N30) out of contact box.
|
0.7 - 2.2 k |
Wiring,
ABS hydraulic unit (A7). |
19.0
(Model 140.0 LH-SFI starting 06/93, HFM-SFI, 140.1 starting 02/93)
|
|
Speed signal output status
Signal: Vehicle stationary |
40
|
N49/1
|
29
|
Ignition: ON |
> 3 V~ |
19.1 |
| 19.1 |
|
Signal: fault |
40
|
N49/1
|
29
|
Ignition: ON |
< 10 V |
10.0,
ABS control module (N30). |
Printable version
