Symptom
Probable cause(s)
Notes
14-21
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Engine idle
vibration
1.
2.
3.
4.
5.
6.
7.
8.
Low ATF level
Shift solenoid valve E
defective
Drive plate defective or
transmission
misassembled
Engine output low
Torque converter clutch
piston defective
ATF pump worn or binding
Lock-up shift valve
defective
Misadjusted engine and
transmission mounts
Check the ATF level, and check the ATF cooler lines for
leakage and loose connections. If necessary, clean the
ATF cooler lines.
Improper alignment of ATF pump and torque converter
housing may cause ATF pump seizure. The symptoms are
mostly an rpm-related ticking noise or a high pitched
squeak.
Inspect the ATF strainer for clogged with particles of steel
or aluminum. If the ATF strainer is clogged, replace it, and
clean the torque converter, cooler, and lines.
Check the D indicator, and check for loose connectors.
Inspect the shift solenoid valve E for seizure, and O-rings
for wear and damage.
Check for a misinstalled/damaged drive plate.
Set idle rpm in gear to the specified idle speed. If still no
good, adjust the engine and transmission mount.
Replace the torque converter.
Vehicle moves
in N
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Excessive ATF
Foreign material in
separator plate orifice
Relief valve defective
1st clutch defective
2nd clutch defective
3rd clutch defective
4th clutch defective
5th clutch defective
Clutch-end-plate-to-top-disc
clearance incorrect
Needle bearing seized,
worn, or damaged
Thrust washer seized up,
worn, or damaged
Check the ATF level, and drain any excess.
Check if the ATF strainer is clogged. If the ATF strainer is
clogged with particles of steel or aluminum, inspect the
ATF pump. If the ATF pump is OK, find the damaged
components that caused debris, and if no cause for
contamination is found, replace the torque converter.
Check the 1st, 2nd, 3rd, 4th, and 5th clutch pressures.
Inspect the clutch piston, clutch piston check valve, and O-
rings. Check the spring retainer and retainer seal for wear
and damage. Inspect the clutch-end-plate-to-top-disc
clearance. If the clearance is out of tolerance, inspect the
clutch discs and plates for wear and damage. If the discs
are worn or damaged, replace the discs as a set. Inspect
the clutch waved-plate height. If the height is out of
tolerance, replace the waved-plate. If the discs and plates
are OK, adjust the clearance with the clutch end plate.
Inspect the 1st clutch feed pipe. If the 1st clutch feed pipe
is scored, replace the end cover.
Inspect the 3rd clutch feed pipe. If the 3rd clutch feed pipe
is scored, replace it and O-ring under the feed pipe guide.
Replace the secondary shaft if the bushing for the 1st or
3rd clutch feed pipe is loose or damaged.
Inspect the 5th clutch feed pipe. If the 5th clutch feed pipe
is scored, replace it and O-ring under the feed pipe guide.
Replace the mainshaft if the bushing for the 5th clutch
feed pipe is loose or damaged.
(cont’d)
05/06/27 17:48:18 61S6M040_140_0022