Hyundai Santa Fe (TM): Engine Control System / Injector. Description and operation
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.

Inspection
1.
Connect the diagnostic tool on the Data Link Connector (DLC).
2.
Turn the ignition switch ON.
Specification
Item
Specification
Coil Resistance (Ω)
13.8 - 15.2 [20°C (68°F)]
Other information:
Description and operation
Description
The ECM (Electro Chromatic inside rear view Mirror) is intended dim the reflecting
light in the rear view mirror. The forward facing sensor detects brightness
of the surroundings, while the rearward looking sensor is for the light from
the rear.
Inspection
•
Before measuring the pressure of the refriferant line, check
whether the refrigerant amount is charged in accordance with
the specified charging amount.