GENERATOR INSPECTION [ZJ, ZY]

Caution

• Do not apply voltage B directly to the generator D terminal, otherwise it could damage the internal parts of the generator (power transistor).

Generator Warning Light

1. Verify that the battery is fully charged.

2. Verify that the drive belt deflection/tension is within the specification. (See DRIVE BELT INSPECTION [ZJ, ZY].)

3. Turn the ignition switch to the ON position and verify that the generator warning light illuminates.

• If the light does not illuminate, inspect the generator warning light, instrument cluster, and the PCM.

4. Verify that the generator warning light turns off after the engine is started.

• If the light does not turn off, inspect whether any of the following DTCs are displayed: P0112, P0113, P2502, P2503, P2504. (See ON-BOARD DIAGNOSTIC TEST.)

Generator

Voltage

1. Verify that the battery is fully charged.

2. Verify that the drive belt deflection/tension is within the specification. (See DRIVE BELT INSPECTION [ZJ, ZY].)

3. Turn off all electrical loads.

4. Start the engine and verify that the generator rotates smoothly without any noise while the engine is running.

5. Measure the voltage at each terminals.

• If not within the specification, replace the generator.

Terminal B: V_B

Terminal P: Approx. 1 V or less

Terminal D: Approx. 0 V

Terminal B: 13.0-15.0 V

Terminal P: Approx. 3.0-8.0 V

Terminal D: Turn the electrical loads (headlight, blower motor, rear window defroster) on and verify that the voltage reading increases.

Current

1. Verify that the battery is fully charged.

2. Verify that the drive belt deflection/tension is within the specification. (See DRIVE BELT INSPECTION [ZJ, ZY].)

3. Disconnect the negative battery cable.

4. Connect a tester capable of reading 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. Start the engine and increase the engine speed to 2,000-2,500 rpm.

9. Turn the following electrical loads on and verify that the current reading increases.

• Headlight

• Blower motor

• Rear window defroster

- If it does not increase, replace the generator.

Note

• The current required for generating power varies with electrical loads applied.

Generator generated current (reference value) [Conditions] Ambient temperature: 20 °C {68 °F}, Voltage: 13.5 V, Engine hot