|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
28
|
PARK/NEUTRAL SW.
|
Vehicles with automatic
transmission AF 22 and Motronic M 2.8
Ignition ON
Engine OFF
Apply parking brake
Selector lever in "P"
or "N"
Selector lever in "R",
"D", "3", "2", "1"
|
ACTIVE 0V
INACTIVE 12V
|
59
|
11,
35
|
|
Trouble-shooting:
|
Nominal Value:
|
Cause of
Fault:
(If nominal
value is not attained)
|
|
· Carry out test step nos.
09, 11, 12, 13 and 14
|
OK
|
· Carry out
trouble-shooting as specified in test step no. 09
|
|
· Ignition ON
· Selector lever in position
"D"
· Using TECH 1, select test step no. 28:
|
INACTIVE 12V
|
· Short circuit to ground
from: transmission control unit wiring harness plug Ter. 11
to: engine control unit wiring harness plug Ter. 42
· Transmission control unit
defective.
|
|
Note:
The following measurements are
made with the wiring harness plug connected. Wiring harness plug terminal 11
is connected to ground from the rear, the wiring harness side, using the
probes from Electronic Kit KM-609.
|
|
|
|
· Bridge transmission
control unit wiring harness plug:
from: transmission control unit wiring harness plug Ter. 11
to: ground, Ter. 31
|
ACTIVE 0V
|
· Short circuit to voltage
from: transmission control unit wiring harness plug Ter. 11
to: engine control unit wiring harness plug Ter. 42
· Transmission control unit
defective.
|
|
|
If nominal
values are attained
|
· Circuit interruption
from: transmission control unit wiring harness plug Ter. 11
to: engine control unit wiring harness plug Ter. 42
· Engine control unit
defective.
|
|
|
|
|
|
|
|
|
