Engine General Information And - Suzuki GRAND VITARA 2005 Service Manual

Engine General Information and Diagnosis
Precautions on Engine Service
CAUTION
!
The following information on engine service
should be noted carefully, as it is important in
preventing damage, and in contributing to
reliable engine performance.
• When raising or supporting engine for any reason, do
not use a jack under oil pan. Due to small clearance
between oil pan and oil pump strainer, jacking against
oil pan may cause it to be bent against strainer
resulting in damaged oil pick-up unit.
• It should be kept in mind, while working on engine,
that 12-volt electrical system is capable of violent and
damaging short circuits.
When performing any work where electrical terminals
could possibly be grounded, ground cable of the
battery should be disconnected at battery.
• Any time the air cleaner, air cleaner outlet hose,
turbocharger, intercooler, intercooler outlet hose or
intake manifold is removed, the intake opening should
be covered. This will protect against accidental
entrance of foreign material which could follow intake
passage into cylinder and cause extensive damage
when engine is started.
Engine General Information and Diagnosis:
Precautions
Precautions in Diagnosing Trouble
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• Don't disconnect couplers from ECM, battery cable
from battery, ECM ground wire harness from engine
or main fuse before confirming diagnostic information
(DTC) stored in ECM memory.
• Diagnostic information stored in ECM memory can be
cleared as well as checked by using SUZUKI scan
tool or OBD generic scan tool. Before using scan tool,
read its Operator's (Instruction) Manual carefully to
have good understanding as to what functions are
available and how to use it.
• Be sure to read "Precautions for Electrical Circuit
Service: in Section 00 in related manual" before
inspection and observe what is written there.
• Replacement of the ECM
Before replacement of the ECM, save the data of
vehicle specification (injector calibration code, EGR /
Inlet throttle valve data register and Diesel PF data
register) into SUZUKI scan tool from ECM according
to procedure described in "ECM Registration: in
Section 1C".
• ECM registration:
If ECM is replaced, register vehicle specification (fuel
injector calibration code, key verification code for
immobilizer system) into ECM referring to "ECM
Registration: in Section 1C".
• Communication of ECM, BCM, combination meter,
ABS or ESP® control module, immobilizer control
module and 4WD control module, is established by
CAN (Controller Area Network). (For more detail of
CAN communication for ECM, refer to "CAN
Communication System Description: ").
Therefore, handle CAN communication line with care
referring to "Precaution for CAN Communication
System: in Section 00 in related manual".
• Immobilizer transponder code registration after
replacing ECM
When ECM is replaced with new one or with another
one, make sure to register immobilizer transponder
code to ECM correctly according to "Procedure after
ECM Replacement: in Section 10C".
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