SSANGYONG 2004 Rexton 2.7XDi Workshop Manual page 696

3A2-38
DIAGNOSTIC INFORMATION AND PROCEDURES
DIAGNOSIS
BASIC KNOWLEDGE REQUIRED
You must be familliar with some basic electronics to use
this section of the Service Manual. They will help you to
follow diagnostic procedures.
Notice
Lack of the basic knowledge of this transmis-sion when
performing diagnostic procedures could re-sult in
incorrect diagnostic performance or damage to
transmission components. Do not, under any circum-
stances, attempt to diagnose a transmission problem
without this basic knowledge.
Notice
If a wire is probed with a sharp instrument and not
properly sealed afterward, the wire will corrode and
an open circuit will result.
Diagnostic test probes are now available that allow you to
probe individual wires without leaving the wire open to the
environment. These probe devices are inexpensive and easy
to install, and they permanently seal the wire from
corrosion.
Special Tools
You should be able to use a Digital Volt Meter (DVM), a
circuit tester, jumper wires or leads and a line pressure
gauge set. The functional check procedure is designed to
verify the correct operation of electronic components in
the transmission. This will eliminate the unnecessary re-
moval of transmission components.
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
FUNCTIONAL CHECK PROCE-
DURE
Begin with the Functional Check Procedure which pro-
vides a general outline of how to diagnose automatic
transmission. The following functional check procedure will
indicate the proper path of diagnosing the transmis-sion
by describing the basic checks and then referenc-ing the
locations of the specific checks.
• Check the fluid level according to the Fluid Level Service
Procedure.
• Check the transmission fluid leak.
• Check if the transmission fluid is not burnt by smell.
Notice
The specific fluid used in this transmission turns
brown during normal operation. Brown fluid does
not indicate a transmission fault.
• Ensure that the transmission is not in Limp Home Mode
(LHM).
• Check the battery terminals and the earth connec-tions
for corrosion or looseness.
• Check that the cooler flow is not restricted.
• Check all electrical plug connections for tightness.
• Use on-board diagnostic tool or a scan tool to see if
any transmission trouble codes have been set. Refer
to the appropriate "Diagnostic Trouble Code (DTC)"
information and repair the vehicle as directed. After
repairing the vehicle, perform the road test and verify
that the code has not set again.
• Perform the Electrical/Garage Shift Tests.
• Perform the Road Test Procedure in this section.
• Inspect the oil and check for metal or other contami-
nants in the oil pan.
BTRA 4 AUTO TRANSMISSION
REXTON SM - 2004.4