On-Board Diagnostic System Description

Automatic Transmission Diagnosis General Description
This vehicle is equipped with an electronic transmission control system, which control the automatic shift up and shift down timing, TCC operation, 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 the transmission including this system, be sure to have full understanding of the outline of "On-Board Diagnostic System Description (for A /T)" and each item in "Precautions in Diagnosing Trouble (for A/T): and execute diagnosis according to "Automatic Transmission System Check: " to obtain correct result smoothly.

On-Board Diagnostic System Description (for A /T)





For automatic transmission control system, PCM has the following functions. Refer to "Inspection of ECM (PCM) and Its Circuits: G16 and J20 Engine" or "Inspection of ECM (PCM) and Its Circuits: H25 Engine".
^ When the ignition switch is turned ON with the engine at a stop, Malfunction Indicator Lamp (MIL) turns ON to check the bulb of the MIL.
^ When PCM detects a malfunction in A/T control system (and/or a malfunction which gives an adverse effect to vehicle emission) while the engine is running, it makes the malfunction indicator lamp in the meter cluster of the instrument panel turn ON and stores the malfunction area (DTC according to SAE J2012) in its 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.)
^ It is possible to communicate through DLC by using not only SUZUKI scan tool but also OBD-II generic scan tool which are in compliance with SAE J1978. (Diagnostic information can be accessed by using a scan tool.)

2 Driving Cycle Detection Logic
Refer to "On-Board Diagnostic System Description (for Engines): G16 and J20 Engine" or "On-Board Diagnostic System Description (for Engine): H25 Engine".

Pending DTC
Refer to "On-Board Diagnostic System Description (for Engines): G16 and J20 Engine" or "On-Board Diagnostic System Description (for Engine): H25 Engine".

Freeze Frame Data
Refer to "On-Board Diagnostic System Description (for Engines): G16 and J20 Engine" or "On-Board Diagnostic System Description (for Engine): H25 Engine".