Rio L4-1.5L (2001)
Fuel Injector: Testing and Inspection
Operation Inspection
Check operation
1. Warm up engine and let engine idle.
2. Listen for sound of each injector running by using sound scope or screwdriver.
WARNING: FUEL IS EXPLOSIVE. WHEN WORKING ON FUEL SYSTEM, MAKE SURE TO SUPPLY ADEQUATE
VENTILATION TO THE WORK AREA. DO NOT SMOKE, AND KEEP SPARKS AND OPEN FLAMES AWAY.
CAUTION: Make sure the fuel injectors are firmly seated on the fuel rail to prevent movement and possible damage.
3. If no sound is heard, measure injector resistance.
4. If injector is OK, check wiring to injector and voltages of ECM terminals B03-47, 48, 49, and 50.
