Mazda MX-6 1998, Workshop Manual

Page: 495 / 1282

CHARGING SYSTEM
GENERATOR INSPECTION
Generator Warning Light
1. Verify that the battery is fully charged.
2. Verify that the drive belt deflection/tension is
correct. (Refer to 0 1 -1 OA DRIVE BELT
INSPECTION [FS].) (Refer to 01-1 OB DRIVE
BELT INSPECTION [KL].)
3. Turn the ignition switch to ON and verify that the
generator warning light comes on.
4. If not, inspect the generator warning light and
wiring harnesses between the battery and
generator warning light and between the battery
and generator terminal L.
H s I I L I)
W 6 U 1 1 7 W A 4
5. Turn the ignition switch to START and verify that
the generator warning light goes out after engine
starts.
6. If not, inspect the generator.
Generator
Voltage
1. Verify that the battery is fully charged.
2. Verify that the drive belt deflection/tension is
within the specification. (Refer to 01-10A DRIVE
BELT INSPECTION [FS].) (Refer to 01-1 OB
DRIVE BELT INSPECTION [KL].)
3. Turn off all electrical loads.
4. Turn the ignition switch to START and verify that
the generator turns smoothly without any noise
while the engine is running.
5. Measure the voltage at the terminals shown in the
table.
W 6 U 1 1 7 W 0 5
Standard voltage
Terminal
Ignition switch ON
(V)
Idle (V)
[20 "C {68 ”F}]
FS KL FS KL
B B+ 14.1— 14.7
L Approx. 1
13.2— 13.8
S
B+ 14.1— 14.7
6. If not as specified, disassemble and inspect the
generator.
Current
1
. Verify that the battery is fully charged.
2.
Verify that the drive belt deflection/tension is
correct. (Refer to
0 1 -1
OA DRIVE BELT
INSPECTION [FS].) (Refer to
0 1 -1
OB DRIVE
BELT INSPECTION [KL].)
3.
Disconnect the negative battery cable.
4.
Connect a circuit tester, capable of reading
1 20
A
or over, between generator terminal B and the
wiring harness.
5.
Connect the negative battery cable.
6. Turn all electrical loads off.
7. Start the engine and increase the engine speed to
2 ,0 0 0
—
2 ,5 0 0
rpm.
8. Turn the following electrical loads on and verify
that the current reading increases.
• Headlights
• Blower motor
• 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)
Terminal B current (A)
FS KL
1,000
Approx. 58 or below
(must not be 0)
Approx. 70 or below
(must not be 0)
2,000
Approx. 77 or below
(must not be 0)
Approx. 90 or below
(must nut be 0)
9. If generator terminal B current will not increase,
disassemble and inspect the generator.
W 6 U 1 1 7 W A 5
0 1 -1 7 -4