ECT Between 10-35 Degrees C (50-95 Degrees F)

Diagnostic Chart:

Schematic:

TEST DESCRIPTION

CAUTION: Refer to Shop Towel Fuel Leak Caution in Service Precautions.

2. The engine coolant temperature affects the ability of the fuel injector tester to detect a faulty fuel injector. If the engine coolant temperature is NOT between 10°C and 35°C (50°F and 95°F), refer to Fuel Injector Coil Test - Engine Coolant Temperature (ECT) Outside 10° - 35°C (50° - 95°F). Component Tests and General Diagnostics

3. The first second of the voltage displayed by the DMM may be inaccurate due to the initial current surge. Therefore, record the lowest voltage displayed by the DMM after the first second of the test. The voltage displayed by the DMM should be within the specified range. Refer to the Example. The voltage displayed by the DMM may increase throughout the test as the fuel injector windings warm and the resistance of the fuel injector windings changes. An erratic voltage reading large fluctuations in voltage that do not stabilize indicates an intermittent connection within the fuel injector.