Based on information from various sensors, the ECM can calculate the fuel amount to be injected. The fuel injector is a solenoid-operated valve and the fuel injection amount is controlled by length of injection time. The ECM controls each injector by grounding the control circuit. When the ECM energizes the injector by grounding the control circuit, the circuit voltage should be low (theoretically 0V) and the fuel is injected. When the ECM de-energizes the injector by opening control circuit, the fuel injector is closed and circuit voltage should momentarily peak, and then settle at system voltage.

Fuel Tank Pressure Sensor (FTPS). Repair procedures

Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the FTPS. Specifica ...

Injector. Specifications

Specification Item Specification Coil Resistance (Ω) 1.18 ~ 1.31 [20°C(68°F)] ...

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Oil Pressure Switch. Repair procedures
Inspection 1. Check the continuity between the terminal and the body with an ohmmeter. If there is no continuity, replace the oil pressure switch. ...

Battery Sensor. Description and Operation
Description Vehicles have many control units that use more electricity. These units control their own system based on information from diverse sensors. It is important to have a stable power ...

Weight Classification System (WCS). Repair procedures
Removal 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the front passenger ...