starting
If the engine stalls when the selector lever is
shifted from N to D or R range while the engine
is idling, the cause is probably a malfunction of
the engine system, damper clutch solenoid
valve, valve body or torque converter (damper
clutch malfunction).
• Malfunction of the damper clutch control
solenoid valve
• Malfunction of the valve body
• Malfunction of the torque converter
• (Malfunction of the damper clutch)
Shocks when changing from N to D and
large time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is shifted
from N to D range while the engine is idling, the
cause is probably abnormal underdrive clutch
pressure or a malfunction of the underdrive
clutch, valve body.
• Abnormal underdrive clutch pressure
• Abnormal low and reverse brake pressure
• Malfunction of the underdrive solenoid valve
• Malfunction of the valve body
• Malfunction of the idle position switch
Shocks when changing from N to R and
large time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is shifted
from N to R range while the engine is idling, the
cause is probably abnormal reverse clutch
pressure or low and reverse brake pressure, or
a malfunction of the reverse clutch, low and
reverse brake, valve body or idle position
switch.
• Abnormal reverse clutch pressure
• Abnormal low and reverse brake pressure
• Malfunction of the low and reverse solenoid
valve
• Malfunction of the reverse clutch
• Malfunction of the low and reverse brake
• Malfunction of the valve body
• Malfunction of the idle position switch
Shocks when changing from N to D, N to R
and large time lag
If abnormal shocks or a time lag of 2 seconds
or more occur when the selector lever is shifted
from N to D range and from N to R range while
the engine is idling, the cause is probably
abnormal line pressure or a malfunction of the
oil pump or valve body.
• Abnormal line pressure
• Malfunction of the oil pump
• Malfunction of the valve body
Malfunction when
shifting
Shocks and running up
If shocks occur when driving due to upshifting
or downshifting and the transmission speed
becomes higher than the engine speed, the
cause is probably abnormal line pressure or a
malfunction of a solenoid valve, oil pump, valve
body, brake or clutch.
• Abnormal line pressure
• Malfunction of each solenoid valve
• Malfunction of the oil pump
• Malfunction of the valve body
• Malfunction of each brake or each clutch
Displaced shifting
points
All points
If all shift points are displaced while driving, the
cause is probably a malfunction of the output
shaft speed sensor, TPS or solenoid valve.
• Malfunction of the output shaft speed
sensor
• Malfunction of the throttle position sensor
• Malfunction of each solenoid valve
• Abnormal line pressure
• Malfunction of the valve body
• Malfunction of the TCM
Some points
If some of the shift points are displaced while
driving, the cause is probably a malfunction of
the valve body, or it is related to control and is
not an abnormality.
• Malfunction of the valve body
Does not shift
No diagnosis codes
If shifting does not occur while driving and no
diagnosis codes are set, the cause is probably
a malfunction of the transaxle range switch, or
TCM
• Malfunction of the transaxle range
• Malfunction of the TCM
Malfunction while
Poor a acceleration
• Malfunction of the engine system
Page 9 of 11
24.04.2008
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