Suzuki SY413 Service Manual page 1951

7B-12 AUTOMATIC TRANSMISSION (3 A/T)
This vehicle is equipped with an electronic transmission control system, which control the automatic shift up and
shift down timing, etc. suitably to vehicle driving conditions.
PCM has an On-Board Diagnosis System which detects a malfunction in this system and abnormality of those parts
that influence the engine exhaust emission.
When diagnosing a trouble in transmission including this system, be sure to have full understanding of the outline
of "ON-BOARD DIAGNOSTIC SYSTEM" and each item in "PRECAUTION IN DIAGNOSING TROUBLE" and
execute diagnosis according to "AUTOMATIC TRANSMISSION DIAGNOSTIC FLOW TABLE" given below to ob-
tain correct result smoothly.
NOTE:
There are two types of ON-BOARD DIAGNOSTIC SYSTEM depending on vehicle specifications. The type
of system for vehicle being serviced can be identified by whether equipped with WU-TWC or not. Identify
vehicle referring to "IDENTIFICATION WHETHER VEHICLE EQUIPPED WITH WU-TWC OR NOT" in Section
0A.
1. Malfunction indicator lamp (MIL)
2. Data link connector (DLC)
3. SUZUKI scan tool (Tech-1)
DIAGNOSIS
ON-BOARD DIAGNOSTIC SYSTEM
[For vehicle with WU-TWC]
For automatic transmission control system, PCM has following
functions. Refer to Section 6-1 or 6-2 for details.
or
D When ignition switch is turned ON with engine at a stop malfunc-
D When PCM detects a malfunction in A/T control system (and/or
D It is possible to communicate with PCM through data link con-
2 Driving Cycle Detection Logic
Refer to Section 6-1 or 6-2 for details.
Freeze Frame Data
Refer to Section 6-1 or 6-2 for details.
tion indicator lamp (MIL) turns ON to check bulb of MIL.
a malfunction which gives an adverse effect to vehicle emission)
while engine is running, it makes malfunction indicator lamp in
meter cluster of instrument panel turn ON and stores malfunc-
tion area (DTC) in its memory.
If it detects that continuously 3 driving cycles are normal after de-
tecting a malfunction, however, it makes MIL turn OFF although
DTC stored in its memory will remain.
necter (DLC) by using SUZUKI scan tool (Tech-1).
(Diagnostic information can be checked and erased by using a
scan tool)