Suzuki sq-416-420-625 Service Manual page 412

7B1-10 AUTOMATIC TRANSMISSION (4 A / T)
Fail Safe Function
This function is provided by the safe mechanism that assures safe driveability even when the shift solenoid valve
or speed sensor fails.
The table below shows the gear position in each shift under a normal/abnormal condition.
Condition
Shift position
D D
2
L L
Operation of Shift Solenoids and TCC Solenoid
SOLENOIDS
Shift solenoid-A (#1, NO.1)
Shift solenoid-B (#2, NO.2)
TCC solenoid
f: ON (valve is open) : OFF (valve is closed)
Shift solenoid
Normal valve-A(#1)
abnormal
1st
2nd
3rd
O/D
1st
2nd
(3rd)
1st
(2nd)
Shift the select
lever with its
button pushed
in.
Shift the select
lever without
pushing its
button.
RANGE
GEAR
1st 2nd
f f
 f
 
Shift solenoid
3rd
O/D
3rd
1st
(2nd)
Change Mechanism
The same select pattern shift lever is used as the floor type and fre-
quently used "N" and "D" ranges are made selectable freely.
D 2
4th
3rd 1st
(O/D)
  f
f  
f f 
valve-B(#2)
abnormal (#1 and #2) abnormal
1st
O/D
1st
3rd 3rd
1st 1st
L P, N & R
2nd 1st —
f f f
f  
  
Shift solenoid
valves-A&B
O/D O/D
3rd
1st 1st