Suzuki 2000 Grand Vitara SQ416, Service Manual

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YH4
GRAND
VITARA
ENGINE (H25 ENGINE) 6-1-11
SUZUKI
Serial data
line
Body ground
ECM ground
Serial data line
(K line of ISO 9141)
FRAME
MAL-
FUNCTION
DETECTED ORDER
In the 2nd through the 4th frames, the freeze frame data of each
malfunction is stored in the order as the malfunction is detected.
These data are not updated regardless of the priority.
Shown in the table below are examples of how freeze frame data
are stored when two or more malfunctions are detected.
FRAME 1 FRAME 2 FRAME 3 FRAME 4
FREEZE FRAME
DATA to be updated
1st FREEZE FRAME
DATA
2nd FREEZE FRAME
DATA
3rd FREEZE FRAME
DATA
No malfunction No freeze frame data
No freeze frame
data No freeze frame
data No freeze frame
data
1 P0112 (IAT) detected
Data at P0112
detection Data at P0112
detection No freeze frame
data No freeze frame
data
2
P0171 (Fuel system)
detected Data at P0171
detection Data at P0112
detection Data at P0171
detection No freeze frame
data
3
P0300 (Misfire)
detected Data at P0171
detection Data at P0112
detection Data at P0171
detection Data at P0300
detection
4
P0301 (Misfire)
detected Data at P0171
detection Data at P0112
detection Data at P0171
detection Data at P0300
detection
Freeze frame data clearance:
The freeze frame data is cleared at the same time as clearance of
DTC.
Data Link Connector (DLC)
DLC (1) is in compliance with SAEJ1962 in its installation position,
the shape of connector and pin assignment.
Serial data line (K line of ISO 9141) is used for SUZUKI scan tool
(Tech-1) or generic scan tool to communicate with ECM (PCM) and
ABS control module. SUZUKI serial data line is used for SUZUKI
scan tool (Tech-1) to communicate with an electronic control unit
(Airbag SDM, etc.).