Troubleshooting - Toyota 4-Runner 1985 Repair Manual

AT-2 AUTOMATIC TRANSMISSION -
Troubleshooting
TROUBLESHOOTING
Problem Possible cause
Remedy Page
Fluid discolored or Fluid contaminated Replace fluid MA-14
smells burnt
Torque converter faulty
Replace torque converter
AT-28, 1 03
Transmission faulty
Disassemble and inspect AT-29
transmission
Vehicle does not move
Manual shift linkage out of adjustment
Adjust shift linkage AT-4
in any drive range
Valve body or primary regulator faulty
Inspect valve body AT-68
Parking lock pawl faulty Inspect parking pawl
AT-22
Torque converter faulty
Replace torque converter
AT-28,103
Converter drive plate broken
Replace torque converter
AT-28,103
Oil pump intake strainer blocked
Clean strainer AT-18
Shift lever position
Manual shift linkage out of adjustment Adjust shift linkage AT-4
incorrect
Manual valve and lever faulty Inspect valve body AT-68
Transmission faulty
Disassemble and inspect AT-29
transmission
Harsh engagement Throttle cable out of adjustment Adjust throttle cable AT-4
into any drive range
Valve body or primary regulator faulty Inspect valve body AT-68
Accumulator pistons faulty Inspect accumulator pistons A-17
Transmission faulty Disassemble and inspect AT-29
transmission
Delayed 1-2, 2-3 or Throttle cable out of adjustment Adjust throttle. cable AT-4
3-00 up-shift, or
Throttle cable and cam faulty
down-shifts from 00-3
Inspect throttle cable and AT-21
or 3-2 then shifts back
cam
to 00 or 3 Governor faulty Inspect governor AT-90
Valve body faulty Inspect valve body AT-68
Slips on 1-2, 2-3 or Manual shift linkage out of adjustment
Adjust shift linkage AT-4
3-00 up-shift, or
Throttle cable out of adjustment Adjust throttle cable AT-4
slips or shudders on
Valve body faulty Inspect valve body AT-68
take-off
Transmission faulty Disassemble and inspect AT-29
transmission
Drag, binding or tie-up Manual shift linkage out of adjustment Adjust shift linkage AT-4
on 1-2,2-3 or 3-00
Valve body faulty Inspect valve body AT-68
up-shift
Transmission faulty Disassemble and inspect AT-29
transmission