Section 22 (Engine Controls - Pin Voltage/Circuit Resistance Charts): Introduction
WARNING: This page is about a different car, the 2002 Suzuki XL-7, 2002 Suzuki Vitara, 2002 Suzuki Grand Vitara, 2002 Suzuki Esteem, and 2002 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
Pin voltage charts are used for diagnosing intermittent symptoms and faults that can not be resolved during self-diagnostics. Pin voltage tests ensure Engine Control Module (ECM) is receiving and transmitting proper voltage and other signals. Pin voltage charts may be helpful in determining if there is an open or short in wiring harness.
Circuit resistance tests are used for diagnosing individual component circuit to the ECM. Circuit resistance charts may be helpful in determining if there is an open or short in wiring harness or the existence of a malfunctioning component.