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Home >> Suzuki >> 2007 >> SX4 Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (Engine General Information And Diagnosis) >> Diagnostic Information And Procedures >> ECM Power And Ground Circuit Check >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition switch is turned ON, the main relay turns ON (the contact point closes) and the main power is supplied to ECM. And then ECM supplies 5 V power to each sensor (MAP sensor, A/C refrigerant pressure sensor, TP sensor and pressure sensor (included in EVAP leak check module).

If 5 V power circuit to each sensors from ECM is shorted to ground, ECM stops engine and emission control operation.

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