Mazda 1990 323 Workshop Manual Supplement page 304

ROAD TEST
6. Select the Hold mode.
7. Accelerate the vehicle and verify that the l-2 and 2-3 upshifts 3-1, and lockup downshifts are obtained.
The shift points are as shown in the D range (Hold) shift diagram.
D-range (Hold) shift diagram
1
LOCKUP AVAILABLE WHEN COASTING
g
fJ$g
LOCKUP AVAILABLE WHEN ACCELERATING AND CRUISING
z
4.0
g w3)
i
I
I
I
l-j-3
- SHIFT UP
--- SHIFT DOWN
100
120 140
160
(63) (75) (87)
(99)
VEHICLE SPEED km/h (mph)
03UOK2-07!
Evaluation
Condition
Possible Cause
No I-2 up- or downshift
Stuck 1-2 shift solenoid valve
Stuck 1-2 shift valve
I
No 2-3 up- or downshift
Stuck 2-3 shift solenoid valve
Stuck 2-3 shift valve
No 3-OD up- or downshift
Stuck 3-4 shift solenoid valve
Stuck 3-4 shift valve
No lockup shift
Stuck lockup control solenoid valve
Stuck lockup control valve
I
Incorrect shift point
Misadjusted throttle sensor
Stuck shift valves
Stuck accumulators
Excessive shift shock or slippage
No engine braking effect
Stuck or no one-way check orifice
Worn clutches, brakes, or one-way clutch
Worn clutches or brakes
03UOKX-103
Noise and Vibration
Note
l
Abnormal noise and vibration can also be caused by the torque converter, driveshaft, or differen-
tial. Therefore, check for the cause with extreme care.
Drive the vehicle in OD (lockup), OD (no lockup), and 3rd (Hold) and check for abnormal noise or vibration.
Kickdown
Drive the vehicle in OD, 3rd, and 2nd gears and check that kickdown occurs for OD+3, OD-+2, OD-tl,
3-2, 341, 2-1, and that the shift points are as shown in the shift diagram.
03UOKX-104
K2-128