Toyota Celica Supra 1986 Service And Repair Manual page 279

AT·4 AUTOMATIC TRANSMISSION - Troubleshooting
TROUBLESHOOTING (Cont'dl
Problem
Possible cau.se
Remedy Page
Drag, binding or tie-up Manual linkage out of adjustment Adjust linkage AT·5
on 1· 2, 2· 3 or 3· 00
Valve body faulty Inspect valve body
AT-83
up ~shift
Transmission faulty
Disassemble and inspect
AT·45
transmission
No l ock-up in 2nd, 3rd
Electric control faulty
Inspec t electric control AT-6
or DO
Valve body faulty Inspect valve body
AT·83
Solenoid valve faulty
Inspect valve body AT-83
Transmission faulty
Disassemble and inspect AT-45
transmission
Harsh down-shift Throttle cable out of adjustment
Adjust throttle cable AT-5
Throttle cable and cam faulty Inspect thronle cable and cam AT-37
Accumulator pistons faulty
Inspect accumulator pistons
AT·112
Valve body faulty
Inspect vatve body AT-83
Transmission faulty Disassemble and inspect AT-45
transmission
No down-shift when Valve body faulty Inspect valve body
AT-83
coasting
Solenoid valve faulty
Inspect solenoid valve
AT-19
Electric control faulty
Inspect elec;tric control AT·6
Oown·shift occurs too
Throttle cable faulty Inspect throttle cable AT·37
quickly or late while
Valve body fault y Inspect valve body AT-83
coasting
Transmission faulty
Disassemble and in spect
AT·45
Hansmission
Solenoid valve faulty
Inspect solenoid valve AT·19
Electric control faulty
Inspect electric control AT-6
N o. 00·3. 3· 2 or 2· 1 Solenoid valve faulty Inspect solenoid valve AT· 19
kickdow n
Electric control faulty
Inspect electric control AT·6
Valve body faulty Inspect valve body
AT-83
No engine brakin g Solenoid valve faulty
Inspect solenoid valve AT· 19
in "2" or
"l"
range
Electric control faulty
Inspect electric control AT·6
Valve body faulty Inspect valve body
AT-83
Transmission faulty
Disassemble and inspect AT-45
transmission
Vehicle does not
Manual linkage out of adjustment Adjust linkage
AT· S
hold in "P"
Parking lock pawl cam and spring faulty
Inspect cam and spring AT-37