K
TROUBLESHOOTING GUIDE
A
=
Applied
OR
=
Overrunning
NE
=
No effect
TROUBLESHOOTING GUIDE
PREPARATION
SST
H
=
Hold
* =
Overdrive cancelled
MK 71 00-62
49 TO88 O A O
NGS set
I
I
MF1688-A
5BuoKx-260
Test and Torque Converter clutch Test. (Refer to page
K-90.)
6BUOKX-291
Step 4: Road Test
GENERAL NOTES
A problem with the transmission may be caused by the emission control system, the electronic control
system, the hydraulic control system, or by transmission powertrain component(s); therefore, when
troubleshooting, begin with those points which can be inspected quickly and easily. The recommended
troubleshooting sequence is described below.
5BUOKX-259
Note
For correct testing, the engine speed should be
checked with a tachometer.
For
inspection of
PCM terminal
voltage and
input/output
device
CABLE
NGS POWER
Check the shift points.
5BUOKX-262
Step 1 : Self-Diagnostic System lnspection
Check for diagnostic trouble code(s) in the powertrain
control module (PCM) with the SST (NGS). (Refer to
Section FT.)
Step 2: Electrical Signal Inspection
Check the signals totfrom the powertrain control module
(PCM) with the SST (Breakout Box). (Refer to Section FT.)
6BUOKX-261
Step 3: Mechanical System Test
Check the Control Pressure Test. Stall Test. Air Pressure
...
49 UNOl 130
104 pin
breakout
box
For
inspection
of PCM