 |
Test scope |
Test connection
|
Test condition |
Nominal value |
Possible cause/Remedy |
| 1.0 |
Left/right front ESA
switch (S22/S23)
Voltage supply
Test X55/3 for left seat,
test X55/4 for right seat
|
3 
|
X55/3
X55/4
|
 4
|
Disconnect connector 5 at X55/3 (left seat) or connector 5 at X55/4 (right seat).
Circuit 15R: ON
See  20 |
11 - 14 V |
Wiring,
Fuses: F1f21, F1f22,
CF Relay Module (K24) |
| 2.0 |
Left front power seat fore/aft motor (M25m1)
Voltage supply |
3
|
M25m1
|
2
|
Voltage supply to S22 OK,
Disconnect blue connector at M25m1,
Circuit 15R: ON
Press seat fore/aft switch:
Forward
Backward |
- 11 to - 14 V
11 to 14 V
|
S22 |
| 3.0 |
Fore/aft motor (M25m1)
Resistance |
1 
|
M25m1
|
 2 |
Disconnect connector (blue) at M25m1 (motor).
|
0.5 - 5 
|
M25m1 |
| 4.0 |
Front raise/lower
motor (M25m3)
Voltage supply |
1
|
M25m3
|
2
|
Voltage supply to S22 OK,
Disconnect white connector at M25m3,
Circuit 15R: ON
Press front raise/lower switch:
Up
Down |
- 11 to - 14 V
11 to 14 V
|
S22 |
| 5.0 |
Front raise/lower motor (M25m3)
Resistance |
1
|
M25m3
|
2 |
Disconnect connector (white) at M25m3 (motor).
|
0.5 - 5
|
M25m3 |
| 6.0 |
Rear raise/lower
motor (M25m2)
Voltage supply |
1
|
M25m2
|
2
|
Voltage supply to S22 OK,
Disconnect connector at M25m2,
Circuit 15R: ON
Press Rear raise/lower switch:
Up
Down |
- 11 to - 14 V
11 to 14 V
|
S22 |
| 7.0 |
Rear raise/lower
motor (M25m2)
Resistance |
11
|
M25m2
|
12 |
Disconnect connector at M25m2 (motor).
|
0.5 - 5
|
M25m2 |
| 8.0 |
Backrest fore/aft
motor (M25m5)
Voltage supply |
1
|
M25m5
|
2
|
Voltage supply to S22 OK,
Disconnect (black) connector at M25m2,
Circuit 15R: ON
Press backrest fore/aft switch:
Forward
Backward |
11 - 14 V
- 11 to - 14 V
|
S22 |
| 9.0 |
Backrest fore/aft
motor (M25m5)
Resistance |
1
|
M25m5
|
2 |
Disconnect black connector at M25m5 (motor).
|
0.5 - 5
|
M25m5 |
| 10.0 |
Fore/aft motor (M26m1)
Voltage supply |
1
|
M26m1
|
2
|
Voltage supply to S23 OK,
Disconnect (blue) connector at M26m1,
Circuit 15R: ON
Press seat fore/aft switch (S23s3):
Forward
Backward |
11 to 14 V
- 11 to - 14 V
|
S23 |
| 11.0 |
Front raise/lower
motor (M26m5)
Resistance |
1
|
M26m5
|
2 |
Disconnect black connector at M26m5 (motor).
|
0.5 - 5
|
M26m5 |
| 12.0 |
Front raise/lower
motor (M26m3)
Voltage supply |
1
|
M26m3
|
2
|
Voltage supply to S23 OK,
Disconnect (white) connector at M26m3,
Circuit 15R: ON
Press seat height, front switch (S23s2):
Up
Down |
11 to 14 V
- 11 to - 14 V
|
S23 |
| 13.0 |
Front raise/lower
motor (M26m3)
Resistance |
1
|
M26m3
|
2 |
Disconnect white connector at M26m3 (motor). |
0.5 - 5 |
M26m3 |
| 14.0 |
Rear raise/lower
motor (M26m2)
Voltage supply |
1
|
M26m2
|
2
|
Voltage supply to S23 OK,
Disconnect (white) connector at M26m2,
Circuit 15R: ON
Press seat height, rear switch (S23s4):
Up
Down |
- 11 to - 14 V
11 to 14
|
S23 |
| 15.0 |
Rear raise/lower
motor (M26m2)
Resistance |
1
|
M26m2
|
2 |
Disconnect connector at M26m2 (motor). |
0.5 - 5 |
M26m2 |
| 16.0 |
Seatback fore/aft
motor (M26m5)
Voltage supply |
1
|
M26m5
|
2
|
Voltage supply to S23 OK,
Disconnect (black) connector at M26m5,
Circuit 15R: ON
Press backrest switch (S23s5):
Foreward
Backward |
11 - 14 V
- 11 to - 14 V
|
S23 |
| 17.0 |
Seatback fore/aft
motor (M26m5)
Resistance |
1
|
M26m5
|
2 |
Disconnect black connector at M26m5 (motor).
|
0.5 - 5
|
M26m5 |
| 18.0 |
CF relay module (K24)
Voltage supply
(Circuit 30) |
6
6
|
K24
|
8
3
|
Ignition: OFF
K24 removed (disconnected) |
11 - 14 V
|
Wiring to X4 and W29 or W29/2
If values are OK:
18.1 |
| 18.1 |
Voltage supply
Circuit 15R |
6
|
K24
|
4
|
Circuit 15R: ON
K24 removed (disconnected) |
11 - 14 V
|
Wiring to X4/18 and W29 or W29/2
If values are OK:
If there continues to be no voltage at left/right front ESA switches, check:
Fuses: F1f21, F1f22,
Wiring to the seats,
K24
|
| 19.0 |
Left door switch (S17/3) |
6
|
K24
|
1
|
Ignition: OFF
K24 removed
(disconnected)
Left door: Open
Left door: Closed |
< 1 V
> 5 V
|
Wiring,
S17/3
If values are OK:
If CF function via S17/3 is still faulty:
K24
If CF function via S17/4 is still faulty:
19.1
|
| 19.1 |
Right door switch (S17/4) |
6
|
K24
|
1
|
Ignition: OFF
K24 removed
(disconnected)
Right door: Open
Right door: Closed |
< 1 V
> 5 V
|
Wiring,
S17/4
If values are OK:
If CF function via S17/4 is still faulty:
K24
|
Printable version
CAUTION! Review 
