System Check
NOTE:
After starting engine, wait at least 30 seconds before measuring voltage. Terminals "B", "E", "L", and "S" are marked on the generator's rear cover.
- Ensure generator wire harness connections are secure, drive belt tension is okay and battery is fully charged. Turn ignition on. If CHARGE light on instrument panel illuminates, go to step 3). If CHARGE light does not illuminate, go to next step.
- Disconnect generator connector (terminals "L" and "S"). Using a fused jumper wire, ground harness side of terminal "L". If CHARGE light illuminates, replace faulty IC regulator. If CHARGE light remains off, check for faulty light bulb or fuse. Replace as necessary. Reconnect generator connector and retest.
- Start engine and allow it to idle. If CHARGE light is off, generator and regulator are operating properly at this time. If CHARGE light is illuminated, check drive belt tension, connections at "B", "L" and "S" terminals, and fuse for "S" terminal. Repair as necessary. If CHARGE light remains illuminated, go to next step.
- Using DVOM, measure voltage between ground and terminal "B" with engine running at 1500 RPM. If reading is greater than 15.5 volts, replace IC regulator. If reading is battery voltage or less, field circuit is open. Repair as necessary. Ensure generator output amperage is within specifications. Refer to the GENERATOR MINIMUM OUTPUT AMPERAGE SPECIFICATIONS table.
GENERATOR MINIMUM OUTPUT AMPERAGE SPECIFICATIONS
| Application | At 1300 RPM | At 2500 RPM | At 5000 RPM | |
|---|---|---|---|---|
| Altima | 24 | 71 | 98 | |
| Frontier | 17 | 54 | 72 | |
| Maxima | 36 | 85 | 110 | |
| Pathfinder | 23 | 65 | 87 | |
| Sentra & 200SX | ||||
| 1.6L | 23 | 65 | 77 | |
| 2.0L | 23 | 63 | 77 | |
| 240SX | 23 | 65 | 77 | |