System Diagram

��)Charging System:

WIRING DIAGRAM

Charging System: Component Location:

COMPONENT LOCATION VIEW

Charging System: Component ID:

COMPONENT ID
1 Battery in the engine bay.
2 Generator in the engine bay behind the engine.
4 Starter motor in the engine bay behind the engine.
20 Ignition switch between the front seats.
22A Main fuse board in the dashboard.
47E Charging indicator lamp in main instrument display panel 540.
501 Main maxi fuse board behind the battery.
540 Main instrument display panel on the dashboard.

4-Pin Connector
H4-8 Brown connector on the left-hand side of the engine below the cable duct.

33-Pin Connector
H33-4 On the bulkhead partition behind the glove box.

Grounding Points
G2 Battery ground, left-hand wheel housing.

DESCRIPTION OF OPERATION
The charging indicator lamp informs the driver whether or not the generator is charging the battery.

When the ignition switch is in the Drive position, positive voltage (+15 circuit) is supplied via fuse 17 to charging indicator lamp 47E in main instrument display panel 540 and then to generator 2.

When the generator is not rotating or if it is not charging the battery for any reason, the charging indicator lamp circuit will be grounded through it, causing the lamp to light up.

When the generator is charging, terminal D+ will be supplied with the same current as B+. Since current will then be supplied to both terminals of the charging indicator lamp, the lamp will go out.

IMPORTANT: Since the generator's field excitation is built up through the bulb filament, the bulb rating (2W) must not be changed.

To increase field excitation still further and to prevent it from disappearing entirely if the bulb burns out, a resistor is connected in parallel with the bulb.

A diode is connected in series with the charging lamp to prevent reverse currents.

FAULT DIAGNOSIS HINTS
1. Check the battery voltage on generator 2.
2. Inspect fuse 17 and check that it is supplied with current.
3. Check that the charging lamp bulb is intact.
4. Check connectors and the wiring harness as well as the generator's ground connection.
5. Check that terminal D+ on the generator is supplied with current.
6. Start the engine and take a voltage reading across B+ on the generator and ground. Also take a voltage reading across D+ on the generator an ground.

The difference between the two voltage readings should not exceed 0.7 V.