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Symptom Troubleshooting Index
These symptoms DO NOT trigger diagnostic trouble codes (DTCs) or cause the D4 indicator to blink. If the malfunction
indicator lamp (MIL) was reported ON or the D4 indicator has been blinking, check for DTCs. But if the vehicle has one
of the symptoms in the following chart, check the probable cause(s) for it, in the sequence listed, until you find the
problem.
Symptom
When you turn the
ignition switch ON (II),
the D4 indicator comes
on and stays on or never
comes on at all
Shift lever cannot be
moved from P while
you're pressing on the
brake pedal
Ignition switch cannot be
moved from ACC (I)
position to LOCK (0)
position (key is pushed in,
shift lever in P)
Engine runs, but vehicle
does not move in any
gear
Probable cause(s)
A problem in the D4
indicator circuit
A problem in the shift lock
system of the interlock
system
A problem in the key
interlock system of the
interlock system
1.
Low ATF level
2.
Shift cable broken or
out of adjustment
3.
Shift cable worn
4.
ATF pump worn or
binding
5.
Regulator valve stuck
or spring worn
6.
ATF strainer clogged
7.
Mainshaft worn or
damaged
8.
Final gears worn or
damaged
9.
Transmission-to-
engine assembly
error
10.
Axle disengaged
Notes
Check the D4 indicator circuit for 1999-2000 models (see
page 14-166), for 2001 models (see page 14-169).
Check interlock system - shift lock system circuit (see
page 14-179).
Check interlock system - key interlock system circuit
(see page 14-182).
•
Check the ATF level, and check the ATF cooler lines
for leakage and loose connections. If necessary, flush
the ATF cooler lines.
•
Check for a loose shift cable at the shift lever and the
transmission control shaft.
•
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.
•
Measure line pressure.
•
If the strainer is clogged, find the damaged
components that caused debris.
•
Inspect the differential pinion gear for wear. If the
differential pinion gears are worn, replace the
differential assembly, replace the ATF strainer,
thoroughly clean the transmission, and flush the
cooler and lines.
•
Be careful not to damage the torque converter
housing when replacing the main ball bearing. You
may also damage the ATF pump when you torque
down the main valve body. This will result in ATF
pump seizure if not detected. Use the proper tools.
•
Install the main seal flush with the torque converter
housing. If you push it into the torque converter
housing until it bottoms out, it will block the fluid
return passage and result in damage.
(cont'd)
14-9
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Troubleshooting
