7B-10 AUTOMATIC TRANSMISSION (4 A/T)
Operation of shift solenoid valves and TCC solenoid valve
Throttle position
signal circuit
(DTC P1700)
No or abnormal throt-
tle opening signal is
inputted
• Scheduling of automatic gear shift is performed as throttle
valve opening is 0%.
• Control of automatic gear shift (i.e. control of oil pressure) is
performed as throttle valve opening is 100%.
• Coast down shifting is performed when brake is applied and
engine rev. is less than 1,500 rpm.
• Lock-up function is turned OFF.
Transmission con-
trol system electri-
cal
(DTC P0702)
Solenoid power sup-
ply relay output volt-
age is too high
although TCM orders
relay to turn off or
relay output voltage is
too low although TCM
orders relay to turn
on.
• When relay shorted, the gear is fixed as the followings and
lock-up function is turned OFF.
“P” range → P, “R” range → R, “N” range → N,
“D” range → 3rd, “2” range → 2nd, “L” range → 1st
• When relay open, power supply to all solenoids is cut and the
gear is fixed as the followings. Lock-up function is turned
OFF.
“P” range → P, “R” range → R, “N” range → N,
“D”/“2”/“L” range → 3rd
Internal malfunc-
tion of TCM
(DTC P1702)
Incorrect calculations
of checking TCM pro-
grammed data indi-
cated.
Power supply to all solenoid is cut and the gear is fixed as fol-
lows :
“P” range P, “R” range R, “N” range N,
“D”/“2”/“L” range “3rd
Area Detecting condition Fail safe function
To Next Page
Loading...
