Mazda 6 2002, Workshop Manual

Page: 373 / 1248

G–4
CHARGING SYSTEM
BATTERY INSPECTION
A6E471018520W02
Battery
1. Inspect the battery in the following procedure.
Test load chart
Battery positive voltage with load
Back-up Current
1. Verify that the engine switch is at OFF and that the key has been removed.
2. Disconnect the negative battery cable.
3. Measure the back-up current between the negative battery terminal and the negative battery cable.
•
If the current exceeds the maximum, remove the fuses in the main fuse block and the fuse block one by
one while measuring the back-up current.
— Inspect and repair harnesses and connectors of the fuse at which the current decreases.
Back-up current
20 mA max.
Caution
•
Operating electrical loads while measuring the back-up current can damage the circuit tester.
End Of Sie
Step Inspection Result Action
1
Measure open circuit
voltage of battery.
More than
12.4 V Go to
Step 3.
Less than
12.4 V Go to
next step.
2
Quick charge for 30 min.
and recheck voltage.
More than
12.4 V Go to
next step.
Less than
12.4 V Replace
battery.
3
Apply load current (see load
test chart) to battery using a
battery load tester and
record battery voltage after
15 s. Is voltage more than
specification?
Yes
Battery is
okay.
No
Replace
battery.
Battery Load (A)
46B24DLS 135
50D20L 150
75D26L 195
80D26L 195
Approximate battery
temperature
Min. voltage (V)
21
°
C {70
°
F} 9.6
16
°
C {61
°
F} 9.5
10
°
C {50
°
F} 9.4
4
°
C {39
°
F} 9.3
–1
°
C {30
°
F} 9.1
–7
°
C {19
°
F} 8.9
–12
°
C {10
°
F} 8.7
–18
°
C {0
°
F} 8.5