|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
07
|
AT INPUT SPEED
|
Apply parking
brake
Engine
running at idle speed, operating temperature
Selector
lever in "P" or "N"
16 SV, 18 SV
C 18 NZ,
Saloon
C 18 NZ,
Estate
E 18 NVR
20 NE, C 20
NE, C 20 NEF with Motronic M 1.5
C 20 NE with
Motronic M 1.5.1, Saloon
C 20 NE with
Motronic M 1.5.1, Estate
C 14 NZ, 14
SE, C 14 SE, C 16 SE
C 16 NZ, X 16
SZ
C 25 XE
Note:
See also
parameter "ENGINE SPEED" in relevant sections for the various
engine systems in this brochure or in the latest corresponding Checking
Procedures or Inspection System brochures.
|
800 to 850 rpm
750 to 910 rpm
650 to 810 rpm
770 to 870 rpm
720 to 880 rpm
770 to 930 rpm
620 to 780 rpm
820 to 980 rpm
750 to 910 rpm
620 to 780 rpm
|
38,
41, 47, 78
|
12,
31
|
|
Trouble-shooting:
|
Nominal Value:
|
Cause of
Fault:
(If nominal
value is not attained)
|
|
· Ignition OFF
· Disconnect wiring harness
plug for transmission input speed pulse pickup P 45
|
|
|
|
· Ignition ON
· Using TECH 1, select engine system
· Adjust nominal engine speed to 900 rpm
(F8:Adjustment)
|
|
|
|
· Measure voltage:
from: wiring plug P 45 Ter. A (pulse pick-up side)
to: wiring plug P 45 Ter. B (pulse pick-up side)
|
AF 13/14/20:
greater than 2 V
AF 22:
greater than 1.5 V
|
· Transmission input speed
pulse pick-up P 45 defective.
|
|
· Using TECH 1, select
engine system
· Increase nominal engine
speed to 1500 rpm (F8:Adjustment)
|
approx. 1500 rpm
|
|
|
· Measure voltage:
from: wiring
plug P 45 Ter. A (pulse pick-up side)
to: wiring
plug P 45 Ter. B (pulse pick-up side)
|
AF 13/14/20:
greater than 3 V
AF 22:
greater than 2.5 V
|
· Transmission input speed pulse pick-up
P 45 defective.
|
|
· Disconnect wiring harness
plug from transmission control unit K 85
· Disconnect wiring harness
plug for transmission output speed pulse pick-up P 48
|
|
|
|
· Ignition ON
· Measure voltage:
from: wiring harness plug K 85 Ter. 12
to: ground, Ter. 31
|
less than 0.1
V
|
· Short circuit to voltage
from: wiring harness plug K 85 Ter. 12
to: wiring harness plug P 45 Ter. A
|
|
· Ignition OFF
· Using multimeter, measure
resistance:
from: wiring harness plug K 85 Ter. 12
to: ground, Ter. 31
|
greater than
100 kW (¥)
|
· Short circuit to ground,
Ter. 31
from: wiring harness plug K 85 Ter. 12
to: wiring harness plug P 45 Ter. A
|
|
· Ignition ON
· Measure voltage:
from: wiring harness plug K 85 Ter. 31
to: ground, Ter. 31
|
less than 0.1
V
|
· Short circuit to voltage
from: wiring harness plug K 85 Ter. 31
to: wiring harness plug P 45 Ter. B and wiring harness plug
P 48 Ter. C
|
|
· Ignition OFF
· Using multimeter, measure
resistance:
from: wiring harness plug K 85 Ter. 31
to: ground, Ter. 31
|
greater than
100 kW (¥)
|
· Short circuit to ground,
Ter. 31
from: wiring harness plug K 85 Ter. 31
to: wiring harness plug P 45 Ter. B wiring harness plug P 48
Ter. C
|
|
· Connect terminals of
wiring harness plug P 45
(wiring harness side)
from: wiring harness plug P 45 Ter. A
to: wiring harness plug P 45 Ter. B
|
|
|
|
· Using multimeter, measure
resistance:
from: wiring harness plug K 85 Ter. 12
to: wiring harness plug K 85 Ter. 31
|
less than 2 W
|
· Lead interruption
from: wiring harness plug K 85 Ter. 12
to: wiring harness plug P 45 Ter. A (wiring harness side)
from: wiring harness plug K 85 Ter. 31
to: wiring harness plug P 45 Ter. B (wiring harness side)
|
|
|
If nominal values are attained
|
· Transmission control unit
defective.
|
|
|
|
|
|
|
|
|
