Component Tests and General Diagnostics

GENERATOR INSPECTION

Generator Warning Light
1. Verify that the battery is fully charged.
- Charge if necessary.

2. Verify that the drive belt deflection/tension is within the specification.
- Adjust if necessary.

3. Turn the ignition switch to ON and verify that the generator warning light comes on.
- If not, inspect generator warning light, wiring harnesses between the battery, generator warning light, and PCM terminal 42. When the generator warning light and the wiring harnesses are okay, replace the PCM.

4. Verify that the generator warning light goes out after the engine is started.
- If not, inspect if any of the following DTCs are displayed: P0112, P0113, P1631, P1632, P1633, P1634. (See ON-BOARD DIAGNOSTIC TEST .)
Generator
Voltage

1. Verify that the battery is fully charged.
- Charge if necessary.

2. Verify that the drive belt deflection/tension is within the specification.
- Adjust if necessary.

3. Turn off all electrical loads.
4. Turn the ignition switch to start the engine and verify that the generator turns smoothly without any noise while the engine is running.




5. Measure the voltage at the terminals indicated in the table.
- If not as specified, repair or replace the generator as necessary.




* : Turn the following electrical loads on and verify that the voltage reading increases.
- Headlights
- Blower Motor
- Rear window defroster

Current
1. Verify that the battery is fully charged.
- Charge if necessary.

2. Verify that the drive belt deflection/tension is within the specification.
- Adjust if necessary.

3. Disconnect the negative battery cable.
4. Connect ammeter, capable of reading 120 A or above, between generator terminal B and the wiring harness.

5. Connect the negative battery cable.
6. Turn off all electrical loads.
7. Start the engine and increase the engine speed to 2,000 - 2,500 rpm.




8. Turn the following electrical loads on and verify that the current reading increases.
1. Headlights
2. Blower motor
3. Rear window defroster
- If generator terminal B current will not increase, repair or replace the generator as necessary.

NOTE: Current required for generating power varies with electrical loads applied.

Standard current (Reference)
Measuring conditions
Room temperature: 20 °C (68 °F)
Voltage: 13.5 V
Engine hot