If the electrolyte quantity is above the lower line, check the battery voltage when cranking the engine. If the voltage is below 9.6 V, recharge or replace the battery.

For non-maintenance-free batteries:

If the electrolyte quantity is below the lower line, add distilled water to each cell. Then, recharge the battery and check the electrolyte's specific gravity.

Standard specific gravity:
1.25 to 1.29 at 20°C (68°F)

If the electrolyte quantity is above the lower line, check the battery voltage when cranking the engine. If the voltage is below 9.6 V, recharge or replace the battery.

Turn the engine switch off and turn on the headlights for 20 to 30 seconds. This removes the surface charge from the battery.

Measure the battery voltage between the negative (-) and positive (+) terminals of the battery.

Standard voltage:
12.5 to 12.9 V at 20°C (68°F)

If the voltage is less than the specification, recharge the battery.

2. INSPECT BATTERY TERMINAL AND FUSE

Check that the battery terminals are not loose or corroded.

If the terminals are corroded, clean the terminals.

Measure the resistance of related fuses.

Standard resistance:
Below 1 Ω

If the result is not as specified, replace the fuses.

3. INSPECT FAN AND GENERATOR V BELT

Charging System - On-Vehicle Inspection. 1UR-FE BATTERY / CHARGING. Land Cruiser URJ200 URJ202 GRJ200 VDJ200

Check the belt for wear, cracks or other signs of damage.

If any of the following defects is found, replace the fan and generator V belt.

The belt is cracked.

The belt is worn out to the extent that the cords are exposed.

The belt has chunks missing from the ribs.

Check that the belt fits properly in the ribbed grooves.

Text in Illustration
*a	CORRECT
*b	INCORRECT

HINT:

Check with your hand to confirm that the belt has not slipped out of the grooves on the bottom of the pulley. If it has slipped out, replace the fan and generator V belt. Install a new fan and generator V belt correctly.

4. INSPECT GENERATOR WIRING

Visually check the generator wiring.

Check that the wiring is in good condition.

5. CHECK FOR ABNORMAL NOISES

Listen for abnormal noises from the generator.

Check that no abnormal noises are heard from the generator while the engine is running.

6. INSPECT CHARGE WARNING LIGHT CIRCUIT

Turn the engine switch on (IG). Check that the charge warning light comes on.

Start the engine and check that the light goes off.

If the light does not operate as specified, troubleshoot the charge warning light circuit.

7. INSPECT CHARGING CIRCUIT WITHOUT LOAD

Connect a voltmeter and ammeter to the charging circuit as follows.

Disconnect the wire from terminal B of the generator, and then connect it to the negative (-) lead of an ammeter.

Text in Illustration
*1	Battery
*2	Terminal B
*3	Generator

Connect the positive (+) lead of the ammeter to terminal B of the generator.

Connect the positive (+) lead of a voltmeter to the positive (+) terminal of the battery.

Ground the negative (-) lead of the voltmeter.

Check the charging circuit.

Maintain the engine speed at 2000 rpm and check the reading on the ammeter and voltmeter.

Standard current:
10 A or less

Standard voltage:
13.2 to 14.8 V

If the voltmeter reading is higher than the standard voltage, replace the generator.

HINT:

If the battery is not fully charged, the ammeter reading will sometimes be higher than the standard current.

8. INSPECT CHARGING CIRCUIT WITH LOAD

With the engine running at 2000 rpm, turn the high beam headlights on and turn the heater blower switch to the HI position.

Check the reading on the ammeter.

Standard current:
30 A or higher

If the ammeter reading is less than the standard current, repair the generator.

HINT:

If the battery is fully charged, the indication will sometimes be less than the standard current. If this is the case, add more electrical load (operate the wipers, rear window defogger, etc.) and check the reading on the ammeter again.

1UR-FE BATTERY / CHARGING

Land Cruiser URJ200 URJ202 GRJ200 VDJ200

CHARGING SYSTEM