ON-VEHICLE SERVICE (AW30–40LE) 7A3-13
Evaluation
i. If there is no 1→2 upshift:
• Solenoid S2 is stuck
• 1–2 shift valve is stuck
ii. If there is no 2 →3 upshift:
• Solenoid S1 is stuck
• 2–3 shift valve is stuck
iii. If there is no 3 →OD upshift (throttle valve opening
1/2):
• Solenoid S2 is stuck
• 3–OD shift valve is stuck
iv. If the shift point is defective: Refer to TROUBLESHOOTING CHART in this
section.
v. If the lock-up is defective: Refer to TROUBLESHOOTING CHART in this
section.
2. In the same manner, check the shock and slip at the 1→ 2, 2 →3 and 3 →OD upshifts.
NOTE: Drive the vehicle on level ground.
Evaluation
If the shock is excessive:
Refer to TROUBLESHOOTING CHART in this section. 3. Run at “D" position lock-up or OD gear and check fo
r
abnormal noise and vibration.
NOTE: The check for the cause of abnormal noise and
vibration must be made with extreme care as it could
also be due to loss of balance in the propeller shaft,
differential, the torque converter, etc. or insufficient
bending, rigidity, etc. in the power train.
RUW 37ASH000201
4. W hile running in “D" position, 2nd, 3rd gears and
OD, check to see that the possible kick-down
vehicle speed limits for 2 →1, 3 →1, 3 →2, OD →3
and OD →2 kick-downs conform to those indicated
on the automatic shift diagram.
RTW 77ASH003101
5. Check for abnormal shock and slip at kick-down.
6. W hile running in “D" position, OD gear or “lock-up", shift to “2" and “L" positions and check the engine
braking effect at each of these positions.
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ISUZU KB P190 2007
