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6-3-6 ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z13DT ENGINE)
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Precaution in Diagnosing Trouble
• Don't disconnect couplers from ECM, battery cable from battery, ECM ground wire harness from engine or
main fuse before confirming diagnostic information stored in ECM memory.
• Diagnostic information stored in ECM memory can be cleared as well as checked by using SUZUKI scan
tool or 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 0A before inspection and observe what
is written there.
• ECM registration
If ECM is replaced, register vehicle specification (fuel injector calibration code, vehicle variant, password for
immobilizer system and secret key code for immobilizer system) into ECM referring to "ECM registration" in
Section 6E3.
• Fuel injector calibration code registration
If fuel injector is replaced, register fuel injector calibration code into ECM by performing procedure described
in "ECM registration" of Section 6E3.
Otherwise, it has an adverse effect on engine.
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Data Link Connector (DLC)
DLC (1) in compliance with SAE J1962 in its installation position,
the shape of connector and pin assignment.
K (4) line of ISO 9141 is used for SUZUKI scan tool or generic
scan tool to communication with ECM, ABS control module, EPS
controller, SDM and immobilizer control module.
2. B+
4. ECM ground
5. Body ground
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