On-Vehicle Testing
- Turn ignition switch to RUN position. Check charge indicator light. If indicator light illuminates, go to next step. If indicator light does not illuminate, turn engine off and go to step 5).
- Start engine and let idle. Check charge indicator light. If indicator light does not illuminate or blink, go to next step. If indicator light is still illuminated or blinks, check fan belt tension, check "S" and "B" terminals for proper contact and check generator output. See GENERATOR OUTPUT SPECIFICATIONS table.
- Check voltage at battery terminals. If voltage is 12.5-15.5 volts, go to next step. If voltage is greater than 15.5 volts, replace regulator assembly. If voltage is less than 12.5 volts, check IC voltage regulator. If regulator is okay, replace generator assembly as necessary.
- Turn headlights on. Check charge indicator bulb. If indicator light illuminates or blinks, check diode assembly. See DIODE ASSEMBLY under BENCH TESTING. If indicator light does not illuminate or blink, system is functioning properly at this time.
- Disconnect generator harness connector. Ground terminal "L" (Brown wire) at generator harness connector. Turn ignition switch to RUN position, engine off. Check charge indicator light. If indicator light does not illuminate, repair indicator light circuit and/or replace bulb. If indicator light illuminates, check IC voltage regulator and positive terminal of diode. See DIODE ASSEMBLY under BENCH TESTING.
GENERATOR OUTPUT SPECIFICATIONS
| Engine RPM |
Amps |
| Forester |
|
| Impreza |
| 1500 |
30 Or Greater |
| 2500 |
64 Or Greater |
| 5000 |
76 Or Greater |