ENGINE DIAGNOSIS (RHZ ENGINE WITH SINGLE-CONNECTOR ECM) 6-7
Warm-Up Cycle
A “warm-up cycle” means sufficient vehicle operation such that the
coolant temperature has risen by at least 22_C (40_F) from engine
starting and reaches a minimum temperature of 70_C (160_F).
Driving Cycle
A “driving cycle” consists of two parts, engine startup and engine
shutoff.
2 Driving Cycle Detection Logic
The malfunction detected in the first driving cycle is stored in ECM
(PCM) memory (in the form of pending DTC) but the malfunction in-
dicator lamp does not light at this time. It lights up at the second
detection of same malfunction also in the next driving cycle.
Pending Diagnostic Trouble Code (DTC)
NOTE:
Pending diagnostic trouble code can be read using generic
scan tool or Euro mode of Suzuki scan tool.
Pending DTC means a DTC detected and stored temporarily at 1
driving cycle of the DTC which is detected in the 2 driving cycle
detection logic.
Freeze Frame Data
NOTE:
Freeze frame data can be read using generic scan tool or Euro
mode of Suzuki scan tool.
ECM (PCM) stores the engine and driving conditions (in the form
of data as shown at the left) at the moment of the detection of a mal-
function in its memory. This data is called “Freeze frame data”.
Therefore, it is possible to know engine and driving conditions (e.g.,
whether the engine was warm or not, where the vehicle was running
or stopped) when a malfunction was detected by checking the
freeze frame data.
Priority of freeze frame data:
As ECM can store freeze frame data for one malfunction only, the
freeze frame data shown as 1 below has a priority for storage. (If
malfunction as described in the upper square “1” below is detected
while the freeze frame data in the lower square “2” has been stored,
the freeze frame data “2” will be updated by the freeze frame data
“1”.)
PRIORITY
FREEZE FRAME DATA
1 Freeze frame data at initial detection of diagnostic
trouble codes below.
P0100, P0120, P0170, P0190, P0200, P0220,
P0230, P0235, P0243, P0560, P0903
2 Freeze frame data when a diagnostic trouble code
other than those in “1” above is detected.
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