GENERATOR INSPECTION[AJ (3.0L Duratec)]

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Generator Warning Light

1.  Verify that the battery is fully charged.

2.  Verify that the drive belt deflection/tension is correct. (See DRIVE BELT INSPECTION[AJ (3.0L Duratec)].)

3.  With the ignition switch turned to the ON position, verify that the generator warning light illuminates.

•  If it does not illuminate, inspect the generator warning light and the wiring harness between the battery, generator warning light, and PCM.

•  If the generator warning light and the wiring harness are normal, inspect the PCM.

4.  Verify that the generator warning light goes out after the engine is started.

•  If it does not goes out, inspect the generator.

Generator

Voltage

1.  Verify that the battery is fully charged.

2.  Verify that the drive belt deflection/tension is correct. (See DRIVE BELT INSPECTION[AJ (3.0L Duratec)].)

3.  Turn off all electrical loads.

4.  Start the engine.

5.  Verify that the generator rotates smoothly without any noise while the engine is running.

•  If there is any noise, find the cause and repair or replace the generator.

6.  Measure the voltage at each terminal using a tester.

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•  If it is not as specified, find the cause and repair or replace the applicable part.

Current

Note

•  Since the charging current decreases rapidly after starting the engine, carry out the following procedure quickly, and read the maximum current value.

1.  Verify that the battery is fully charged.

2.  Verify that the drive belt deflection/tension is correct. (See DRIVE BELT INSPECTION[AJ (3.0L Duratec)].)

3.  Disconnect the negative battery cable.

4.  Connect a tester, which can read 120 A or more, between generator terminal B and the wiring harness.

5.  Connect the negative battery cable.

6.  Turn off all electrical loads.

7.  Start the engine.

8.  Increase engine speed to 2,000 rpm.

Note

•  When the electrical load on the vehicle is low, the specified current cannot be verified although the generator is normal. In this case, increase the electrical load (Leave the headlights turned on for a while, then discharge the battery, or use a similar method.) and recheck.

•  When the generator itself or the ambient temperature are too high, the specified current also cannot be verified. In this case, cool down the generator and recheck.

9.  Turn the following electrical loads on and verify that the current reading increases more than the minimum value indicated below.

•  Headlights (high-beam)

•  Blower motor (HI)

•  Rear window defroster

•  Brake lights