TROUBLE SHOOTING
Note. See CHARGING SYSTEM - GENERAL TROUBLE SHOOTING article in GENERAL INFORMATION.
Check all fuses, fusible links, ignition switch and appropriate relays (if equipped). Check generator output. See NO-LOAD TEST under ON-VEHICLE TESTING.
NO-LOAD TEST
- Disconnect battery-to-generator terminal "B" wire. (Scheme 1) Using an ammeter and voltmeter, connect negative ammeter lead to disconnected generator terminal "B" wire end, and connect positive ammeter lead to generator terminal "B".
- Connect voltmeter positive lead to generator terminal "B" and negative lead to ground. (Scheme 1) Start engine and increase engine speed to 2000 RPM. Both meters should read within specification. See «GENERATOR SPECIFICATIONS»(ref-167885-S08609192832004102500000). If voltage is more than specified, replace voltage regulator. If voltage reading is less than specified, check voltage regulator. See «VOLTAGE REGULATOR»(ref-167885-S06725982492004102500000).
Scheme 1
LOAD TEST
Note. If battery is fully charged, generator load test results may be less than 30 amps.
- Connect an ammeter as described in NO-LOAD TEST, step 1 . Start engine. Turn on high beam headlights and place heater blower switch on HI. Increase engine speed to 2000 RPM.
- Check ammeter reading. See «GENERATOR SPECIFICATIONS»(ref-167885-S08609192832004102500000) . If amperage is less than specified, repair or replace generator.