Grand Vitara 4WD L4-2.4L (2009)
Engine Control Module: Service Precautions
Precautions For ECM Circuit Inspection
Precautions for ECM Circuit Inspection
When measuring circuit voltage and/or pulse signal at ECM connector, connect the special tool to ECM and ECM connectors while referring to
Inspection of ECM and Its Circuits See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Pinout Values and Diagnostic
Parameters and noting the following.
-
ECM connectors are waterproofed. Each terminal of ECM connectors is sealed with grommet. Therefore, do not insert the tester probe into sealed
terminal from harness side. When measuring circuit voltage and/or pulse signal at ECM connector, be sure to connect special tool to ECM
connectors and insert tester probe into special tool's connectors at harness side. Otherwise, ECM and its circuits may be damaged by water.
-
Wire colors of special tool's connectors are different from those of ECM connectors. However, terminal arrangement of these connectors are the
same as those of ECM connectors. Therefore, be sure to identify terminal location to measure proper terminal.
