AUTOMATIC TRANSAXLE DIAGNOSIS
TSB Revision
AUTOMATIC TRANSAXLE
23A-25
8
Use the scan
tool MB991958
(MUT-III sub
assembly) to
stop the
INVECS-II
function.
Selector lever
position: D (on a
flat and straight
road.)
(1) While driving at
60 km/h (37 mph)
in 4th gear,
downshift to 3rd
gear
(2) While driving at
40 km/h (25 mph)
in 3rd gear,
downshift to 2nd
gear
(3) While driving at
20 km/h (12 mph)
in 2nd gear,
downshift to 1st
gear
Data list No.63
(1) 4th
→ 3rd
(2) 3rd
→ 2nd
(3) 2nd
→ 1st
Does not shift
from 2 to 1
31
Low-reverse
solenoid valve
system
(
P.23A-209
.)
33
Second
solenoid valve
system
(
P.23A-228
.)
41
1st gear
incorrect ratio
(
P.23A-255
.)
42
2nd gear
incorrect ratio
(
P.23A-255
.)
Does not shift
from 3 to 2
33
Second
solenoid valve
system
(
P.23A-228
.)
34
Overdrive
solenoid valve
system
(
P.23A-237
.)
42
2nd gear
incorrect ratio
(
P.23A-255
.)
43
3rd gear
incorrect ratio
(
P.23A-255
.)
Does not shift
from 4 to 3
32
Underdrive
solenoid valve
system
(
P.23A-219
.)
33
Second
solenoid valve
system
(
P.23A-228
.)
43
3rd gear
incorrect ratio
(
P.23A-255
.)
44
4th gear
incorrect ratio
(
P.23A-255
.)
STEP
CONDITION
BEFORE TEST/
OPERATION
TEST/OPERATION
STANDARD
INSPECTION
ITEM
DTC
INSPECTION
PROCEDURE
PAGE