CHARGING SYSTEM — Trouble-shooting — WITH IC REGULATOR
EL-34flowchartUnverifiedSource typo 'Chrage warning light' in legend captured verbatim — should read 'Charge'.
Trouble-shooting
NOTE
Before conducting an alternator test, make sure that the battery is fully charged. A 30-volt voltmeter and suitable test probes are necessary for the test. The alternator can be checked easily by referring to the Inspection Table.
WARNING
Before starting trouble-shooting, inspect the fusible link.
WITH IC REGULATOR
1
Ⓐ Ignition switch "ON"
Light OFF
Light "OFF" → Disconnect connector and ground lead wire.
Light ON
2
Light "ON" → Engine idling
Light ON (dim/flicker/bright)
Light "ON" — Dim light / Light flickers / Bright light → Check or replace drive belt → Engine idling
Light OFF
3
Light "OFF" → Engine speed 1,500 rpm Lighting switch "ON"
Light ON
Light "ON" → Damaged A.C.G.
Light OFF
4
Light "OFF" → Engine speed 1,500 rpm (Measure B terminal voltage)
13–15 V
13 to 15 V → O.K.
> 15.5 V
5
More than 15.5 V → Damaged IC-RG. Replace.
NOTE
Legend:
1) Use fully charged battery.
2) Light = Charge warning light. A.C.G. = Alternator parts except IC regulator. IC-RG = IC regulator. O.K. = IC-alternator is in good condition.
3) When reaching "Damaged A.C.G.", remove alternator from vehicle and disassemble, inspect and correct or replace faulty parts.
4) Terminal "B" is marked on rear cover of alternator.
| Specification | Value |
|---|---|
| B-terminal voltage at 1,500 rpm — O.K. | 13 - 15V |
| B-terminal voltage at 1,500 rpm — IC-RG damaged | > 15.5V |
B-terminal voltage at 1,500 rpm — O.K.
13 - 15V
B-terminal voltage at 1,500 rpm — IC-RG damaged
> 15.5V