Suzuki 2006 SX4, Service Manual

Page: 596 / 1478

5A-8 Automatic Transmission/Transaxle:
A/T Diagnosis General Description
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This vehicle is equipped with an electronic transaxle
control system, which controls the automatic shift up and
shift down timing, TCC operation, etc. suitably to vehicle
driving conditions.
TCM has an On-Board Diagnosis System which detects
a malfunction in this system.
When diagnosing a trouble in transaxle including this
system, be sure to have full understanding of the outline
of “On-Board Diagnostic System Description” and each
item in “Precautions in Diagnosing Trouble” and execute
diagnosis according to “A/T System Check” to obtain
correct result smoothly.
NOTE
There are two type of On-Board Diagnostic
System, Euro OBD system and non-Euro-
OBD system depending on the vehicle
specification. For identification, refer to
“Precaution on On-Board Diagnostic (OBD)
System in Section 1A”.
On-Board Diagnostic System Description
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NOTE
There are two types of OBD system
depending on the vehicle specification. For
identification, refer to “Precaution on On-
Board Diagnostic (OBD) System in Section
1A”.
For automatic transaxle control system, TCM has
following functions.
• For Euro OBD model, when the ignition switch is
turned ON with the engine at a stop, MIL (1) turns ON
to check the bulb of the MIL.
• For Euro OBD model, when TCM detects a
malfunction in A/T control system TCM desires turning
on MIL and stores malfunction DTC in TCM memory.
(If it detects that continuously 3 driving cycles are
normal after detecting a malfunction, however, it
makes MIL turn OFF although DTC stored in its
memory will remain.)
• For Euro OBD model, it is possible to communicate
with TCM through data link connector (DLC) (2) by
using not only SUZUKI scan tool (3) but also CAN
communication OBD generic scan tool. (Diagnostic
information can be checked and erased by using scan
tool.)
• For non-Euro-OBD model, when ignition switch is
turned ON with no malfunction in A/T control system is
detected, transmission warning light (4) lights for
about 2 seconds after ignition switch is turned ON and
then goes OFF for bulb check.
• For non-Euro-OBD model, when TCM detects a
malfunction in A/T control system, it indicates
transmission warning light (4) and stores malfunction
DTC in its memory.
• For information about the following items, refer to“On-
Board Diagnostic System Description in Section 1A”.
– Warm-up cycle
– Driving cycle
– 2 driving cycle detection logic
– Pending DTC
– Freeze frame date
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