|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
20
21
|
WINTER SW. (-D-)
WINTER LED
|
Ignition OFF
Ignition ON
Engine OFF
Apply parking brake
Selector lever in "P"
or "N"
Apply parking brake and depress
brake pedal
Selector lever in "D"
Hold down tip switch for
"Winter Program"
Release tip switch, press down
again and re-release
|
INACTIVE 12 V
ECON/SPORT 12 V
Winter Program
telltale is OFF
ACTIVE 0 V
WINTER 0 V
Winter Program
telltale is ON
INACTIVE 12 V
ECON/SPORT 12 V
Winter Program
telltale is OFF
|
-
|
21,
35
7,
35
|
|
Trouble-shooting:
|
Nominal Value:
|
Cause of
Fault:
(If nominal
value is not attained)
|
|
· Ignition OFF
· Disconnect from
transmission control unit wiring harness plug
|
|
|
|
· Remove selector lever cover
· Using multimeter, measure resistance
between
solder
points on winter program tip switch S 105:
"Winter
program" tip switch not pressed
"Winter
program" tip switch pressed
|
greater than 100 kW (¥)
less than 2 W
|
· Winter program tip switch S 105
defective.
|
|
· Ignition ON
· Measure voltage (press
winter program tip switch several times):
from: transmission control unit wiring harness plug Ter. 21
to: ground, Ter. 31
|
less than 0.1
V
|
· Short circuit to voltage
from: transmission control unit wiring harness plug Ter. 21
to: "Winter program" tip switch Ter. A
from: "Winter program" tip switch Ter. B
to: ground, Ter. 31
|
|
· Ignition OFF
· Using multimeter, measure
resistance:
from: transmission control unit wiring harness plug Ter. 21
to: ground, Ter. 31
|
greater than
100 kW (¥)
|
· Short circuit to ground
from: transmission control unit wiring harness plug Ter. 21
to: Winter program tip switch Ter. A
|
|
· Press "winter
program" tip switch S 105
· Using multimeter, measure
resistance:
from: transmission control unit wiring harness plug Ter. 21
to: ground, Ter. 31
|
less than 2 W
|
· Circuit interruption
from: transmission control unit wiring harness plug Ter. 21
to: "Winter program" tip switch Ter. A
from: "Winter program" tip switch Ter. B
to: ground, Ter. 31
|
|
|
If nominal values are attained
|
· Transmission control unit
defective.
|
|
· Reconnect control unit
wiring harness plug
Note:
The following
measurements are made with the wiring harness plug connected.
Multimeter
KM-587-A is connected to Ter. 7 from the rear, the wiring harness side, using
the probes from Electronic Kit KM-609.
|
|
|
|
· Ignition OFF
· Measure voltage:
from: transmission control unit wiring harness plug Ter. 7
to: ground, Ter. 31
|
less than 0.1
V
|
· Short circuit to voltage
from: transmission control unit wiring harness plug Ter. 7
to: "Winter program" tip switch Ter. C
|
|
· Ignition ON
· Measure voltage:
from: transmission
control unit wiring harness plug Ter. 7
to: ground,
Ter. 31
|
greater than
10 V
Winter LED
illuminates dimly
|
· Circuit interruption
from: transmission control unit wiring harness plug Ter. 7
to: "Winter program" tip switch Ter. C
· Short circuit to ground
from: transmission control unit wiring harness plug Ter. 7
to: "Winter program" tip switch Ter. C
· Winter LED defective.
|
|
· Selector lever in position
"D"
· Press "winter program" tip
switch S 105
|
|
|
|
· Measure voltage:
from: transmission control unit wiring harness plug Ter. 7
to: ground, Ter. 31
|
less than 1 V
Winter LED illuminates brightly
|
· Winter LED defective.
|
|
|
If nominal values are attained
|
· Transmission control unit
defective.
|
|
|
|
|
|
|
|
|
