Suzuki Liana RH413, Service Manual

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Engine General Information and Diagnosis: 1A-4
Freeze frame data clearance:
The freeze frame data is cleared at the same time as clearance of diagnostic trouble code (DTC).
Data link connector (DLC)
DLC (1) is in compliance with SAE J1962 in its
installation position, the shape of connector and pin
assignment.
Serial data line (K line of ISO 9141) (3) is used for
SUZUKI scan tool or generic scan tool to communicate
with ECM, Air bag SDM, TCM and ABS control module.
SUZUKI serial data line (6) is used for SUZUKI scan tool
to communicate with immobilizer control module.
Vehicle without Immobilizer Indicator Lamp
ECM diagnosis troubles which may occur in the area
including the following parts when the ignition switch is
ON and the engine is running, and indicates the result by
turning on or flashing malfunction indicator lamp (1).
• Heated oxygen sensor (if equipped)
• ECT sensor
• TP sensor
• IAT sensor
• MAP sensor
• CMP sensor
• CKP sensor
• Knock sensor (if equipped)
• VSS
• CPU (Central Processing Unit) of ECM
ECM and malfunction indicator lamp (1) operate as
follows.
• Malfunction indicator lamp (1) lights when the ignition
switch is turned ON (but the engine at stop) with the
diagnosis switch terminal ungrounded regardless of
the condition of Engine and Emission control system.
This is only to check the malfunction indicator lamp (1)
in the combination meter and its circuit.
• If the above areas of Engine and Emission control
system is free from any trouble after the engine start
(while engine is running), malfunction indicator lamp
(1) turns OFF.
• When ECM detects a trouble which has occurred in
the above areas, it makes malfunction indicator lamp
(1) turn ON while the engine is running to warn the
driver of such occurrence of trouble and at the same
time it stores the trouble area in ECM back-up
memory. (The memory is kept as it is even if the
trouble was only temporary and disappeared
immediately. And it is not erased unless the power to
ECM is shut off for specified time or it is cleared by
SUZUKI scan tool.)
ECM also indicates trouble area in memory by means
of flashing of malfunction indicator lamp (1) at the time
of inspection. (i.e. when diagnosis switch terminal (2)
is connected to ground terminal (3) with a service wire
(4) and ignition switch is turned ON.)
2. B +
4. ECM ground
5. Body ground
I3RH0A110002-01