F0:DATA LIST
· Disconnect wiring harness plug from:
K85
transmission control unit
· Ignition ON
· Using multimeter, measure resistance
from: K85
transmission control unit wiring harness plug
Ter.
40 (SWVI)
to: ground
from: K85
transmission control unit wiring harness plug
Ter.
40 (SWVI)
to: K85
transmission control unit wiring harness plug
Ter.
41 (GRRT)
The above tests are merely
static tests and not function checks. For this reason, it is possible that
all the measurements are OK, but that the pressure regulator still does not
regulate properly.
An internal mechanical fault in
the pressure regulator does not necessarily make itself noticeable
electrically
(see section 5.4,
Mechanical/Hydraulic Trouble-shooting).
This note also applies for the
solenoid valves for 1-2/3-4 shift, 2-3 shift, brake band and torque
converter clutch.
Important:
The control unit may be in the
emergency program because of a fault that has nothing to do with the
pressure regulator circuit. This note also applies for the solenoid valves
for 1-2/3-4 shift, 2-3 shift, brake band and torque converter clutch.
In emergency operation, the
pressure regulator is actuated at approx. 100 mA. The voltage supply to the
solenoid valves is interrupted.
In the emergency program, the
following driving stages (gears) can only be shifted manually:
Selector lever in "D" 4th
gear
Selector lever in "3" 4th
gear
Selector lever in "2" 3rd
gear
Selector lever in "1" 1st
gear
|
No.
|
TECH 1 Display
|
Conditions for
Checking
|
Nominal Value
|
Trouble Codes
|
Terminal
|
|
|
22
|
CALCULAT.
PRESS
|
Selector lever in "R"
|
briefly
approx. 695 mA, approx. 6.8 bar
then
approx. 900 mA,
approx. 4 bar again
|
|
|
|
| Notes
on trouble-shooting: |
|
Nominal value:
|
Cause of fault:
(If nominal value is not
attained)
|
|
| · Ignition OFF |
|
|
|
|
|
· Using multimeter, measure voltage
from: K85
transmission control unit wiring harness plug
Ter.
40 (SWVI)
to: ground
|
lower than
0.1 V
|
· Short circuit to voltage
from: K85
transmission control unit wiring harness plug Ter. 40 or
Ter. 41
(GRRT)
to: U10
manifold wiring harness plug X10 Ter. C (GRRT) or Ter. B (SWVI)
· Wiring harness U10 manifold or U10.2
pressure regulator solenoid valve defective
|
|
| · Ignition OFF |
|
higher
than
100 kW (¥)
|
· Short circuit to ground
from: K85
transmission control unit wiring harness plug
Ter.
40 or Ter. 41
to: U10
manifold wiring harness plug X10 Ter. C or Ter. B
· Wiring harness U10 manifold or U10.2
pressure regulator solenoid valve defective
|
|
| · Using multimeter, measure resistance |
|
3.7 to 4.7 W
(5 to 6 W at 85°C to 100°C/ 185 to 212 °F)
|
Resistance
lower than 3.7 W
· Short circuit in wiring harness
from: K85
transmission control unit wiring harness plug
Ter.
40 (SWVI)
to: K85
transmission control unit wiring harness plug
Ter.
41 (GRRT)
· Wiring harness U10 manifold or U10.2
pressure regulator solenoid valve defective
|
|
| |
|
|
Resistance higher than 4.7 W (with warm fluid correspondingly higher)
· Circuit
interruption
from: K85
transmission control unit wiring harness plug Ter. 40 or Ter. 41
to: U10
manifold wiring harness plug X 10 Ter. C or Ter. B
· Wiring harness U10 manifold or U10.2
pressure regulator solenoid valve defective
|
|
|
|
If nominal values are attained
|
· Check wiring harness plug for K85
transmission control unit
· K85 transmission control unit defective
|
|
| Note: |
|
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