|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
27
|
ENGINE SPEED
|
Apply parking brake
Engine running at idle speed,
operating temperature
Selector lever in "P"
or "N"
Automatic transmission AF
14/20/22 with engine
16 SV, 18 SV
20 NE, C 20 NE
C 25 XE
|
800 to 850 rpm
720 to 880 rpm
620 to 780 rpm
|
31
|
29,
35
|
|
Trouble-shooting:
|
Nominal Value:
|
Cause of
Fault:
(If nominal
value is not attained)
|
|
· Ignition ON
· Using TECH 1, select test
step no. 27:
· Measure voltage:
from: transmission control unit wiring harness plug Ter. 29
to: ground, Ter. 31
|
0 rpm
greater than
10 V
|
· Short circuit to ground
from: transmission control unit wiring harness plug Ter. 29
to: corresponding terminal of relevant
engine control unit
· Transmission control unit
defective.
|
|
Note:
The following measurements are
made with the wiring harness plug connected. Wiring harness plug terminal 29
is connected to ground from the rear, the wiring harness side, using the
probes from Electronic Kit KM-609.
|
|
|
|
· Pulse control unit wiring
harness plug:
from: transmission control unit wiring harness plug Ter. 29
to: ground, Ter. 31
|
|
|
|
· Using TECH 1, select test
step no. 27:
· Measure voltage:
from: transmission control unit wiring harness plug Ter. 29
to: ground, Ter. 31
|
greater than
0 rpm
Changes
between 0 V and greater than 10 V
|
· Short circuit to voltage
from: transmission control unit wiring harness plug Ter. 29
to: corresponding terminal of relevant
engine control unit
· Transmission control unit
defective.
|
|
|
If nominal values are attained
|
· Circuit interruption
from: transmission control unit wiring harness plug Ter. 29
to: corresponding terminal of relevant
engine control unit
· Engine control unit
defective.
|
|
|
|
|
|
|
|
|
