Mazda Mazda6 Workshop Manual Supplement page 391

Generator
Voltage
1. Verify that the battery is fully charged.
• Charge if necessary. (See
2. Inspect the drive belt deflection/tension.
(See B2–4 DRIVE BELT
• Replace if necessary. (See
3. Turn off all electrical loads.
4. Turn the engine switch to start the engine and verify that the generator rotates smoothly without any noise
while the engine is running.
5. Measure the voltage at the terminals shown in the table.
• If not as specified, repair or replace the generator if necessary.
Standard voltage
Terminal Engine switch ON (V)
B B+
L Approx. 1
S B+
Current
1. Verify that the battery is fully charged.
• Charge if necessary. (See
2. Verify that the drive belt deflection/tension is correct. (See
• Replace if necessary. (See
3. Disconnect the negative battery cable.
4. Connect an ammeter, capable of reading 120 A or more, between generator terminal B and the wiring harness.
5. Connect the negative battery cable.
6. Turn off all electrical loads.
7. Start the engine and increase the engine speed to 2,000—2,500 rpm.
8. Turn the following electrical loads on and verify that the current reading increases.
(1) Headlights
(2) Blower motor
(3) Rear window defroster
Note
• Current required for generating power varies with electrical loads applied.
Standard current (reference)
Measuring conditions
Room temperature: 20°C {68°F}
Voltage: 13.5 V
Engine hot
Engine speed
(rpm)
1,000
2,000
* : Must not be 0 A.
End Of Sie
G–8
CHARGING SYSTEM
G–6 BATTERY
INSPECTION.)
B2–4 DRIVE BELT
Idle (V)
[20°C {68°F}]
14.1—14.7
G–6 BATTERY
B2–4 DRIVE BELT
Terminal B current (A)*
0—80
0—90
RECHARGING.)
REPLACEMENT.)
RECHARGING.)
B2–4 DRIVE BELT
REPLACEMENT.)
S L
INSPECTION.)
A6E4710W102