Mazda CX-9 Grand Touring. Manual — part 139

BATTERY INSPECTION [MZI-3.7]

ELECTROLYTE SPECIFIC GRAVITY

1. Measure the electrolyte specific gravity using a hydrometer.



If it is less than the specification, recharge the battery. (See BATTERY RECHARGING [MZI-
3.7].)

Battery electrolyte specific gravity [20 C {68 °F}]

1.22-1.29

BATTERY VOLTAGE

1. Inspect the battery as follows:

VOLTAGE SPECIFICATION

Battery load test current

80D26L(55): 195 A

Standard specification

WARNING:



Since battery acid is toxic, be careful when handling the battery.



Since battery acid is highly corrosive, be careful not to allow it to
contact clothing or the vehicle.



In case battery acid contacts skin, eyes, or clothing, flush it
immediately with running water. Especially if the acid gets in the
eyes, flush with water for more than 15 min and get prompt medical
attention.

Step

Inspection

Action

1 Measure the battery positive voltage.

12.4 V or

more

Go to Step 3.

Less than
12.4 V

Go to the

next step.

2 Quick charge for 30 min and recheck voltage.

12.4 V or

more

Go to the
next step.

Less than
12.4 V

Replace the

battery.

3

Using the battery load tester, apply load current (see ) and record battery
voltage after 15 s. Is voltage more than the specification?

Yes

Normal

No

Replace the

battery.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Charging System (MZI-3.7) - Mazda CX-9

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Sunday, November 15, 2009 9:54:57 AM

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VOLTAGE SPECIFICATION

BACK-UP CURRENT

1. Verify that the ignition switch is off (key has been removed) and that all doors are closed.

2. Disconnect the negative battery cable.

3. Connect the tester between the negative battery terminal and negative battery cable, leave the battery

undisturbed for 30 min , and then measure the back-up current.



If not within the specification, measure the back-up current while removing the fuses one by one
from the inside of the main fuse block and the inside of the fuse block.

Battery back-up current (When the ignition switch is off, the ignition key is removed, and all doors
are closed.)

Vehicles with immobilizer system: 50-60 mA

Vehicles without immobilizer system: 55 mA or less

4. Inspect and repair wiring harnesses and connectors of the fuse where the current has decreased.

BATTERY RECHARGING [MZI-3.7]

Battery temp. (°C {°F}) Minimum voltage (V)

4 {39}

9.3

10 {50}

9.4

16 {61}

9.5

21 {70}

9.6

NOTE:



If the battery is not left undisturbed for 30 min , the tester will indicate
a high value (approx. 300 mA) .



If the key or any electrical accessory is operated within approx. 30
min after the tester is connected, the battery must be left undisturbed
for approx. 30 min from that point.

CAUTION:



Operating electrical loads while the back-up current is being
measured can damage the tester.

NOTE:



For vehicles with the immobilizer system, the system periodically
shifts synchronization of the security light flashing. Therefore, 60 mA
(0.1 s) current is supplied when the security light is illuminated, and
50 mA (2 s) current is supplied when the security light is not
illuminated. In addition, the measuring instrument, which shows the
average value, indicates around 55 mA .

2008 Mazda CX-9 Grand Touring

2008 ENGINE Charging System (MZI-3.7) - Mazda CX-9

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Sunday, November 15, 2009 9:54:57 AM

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© 2005 Mitchell Repair Information Company, LLC.

1. Remove the battery and then place it in a pan of water.

2. Remove the battery filler caps.

3. Connect a battery charger to the battery and adjust the charging current as follows.

Battery slow charge current

80D26L (55): 5.5-6.5 A

Battery quick charge current [30 min]

80D26L (55): 35 A

4. After the battery is recharged, verify that the voltage is within the specification and remains at the same

value for 1 h or more after the recharging has been completed.



If not within the specification, replace the battery.

Standard voltage

12.4 V or more

Fig. 4: Identifying Battery & Battery Charger
Courtesy of MAZDA MOTORS CORP.

GENERATOR REMOVAL/INSTALLATION [MZI-3.7]

WARNING:



Keep all flames away from the battery, otherwise evaporated gas
from the battery fluid may catch fire, and cause serious injury.



Remove the battery filler caps when recharging to prevent battery
deformation or damage.

CAUTION:



Do not quick charge for more than 30 min. It will damage the battery.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Charging System (MZI-3.7) - Mazda CX-9

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Sunday, November 15, 2009 9:54:57 AM

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© 2005 Mitchell Repair Information Company, LLC.

1. Disconnect the negative battery cable.

2. Drain the engine coolant. (See ENGINE COOLANT REPLACEMENT [MZI-3.7] .)

3. Remove the air cleaner and fresh air duct component. (See INTAKE-AIR SYSTEM

REMOVAL/INSTALLATION [MZI-3.7] .)

4. Remove the cooling fan component. (See COOLING FAN COMPONENT

REMOVAL/INSTALLATION [MZI-3.7] .)

5. Remove the front splash shield (RH).

6. Remove the generator and A/C drive belt. (See DRIVE BELT REMOVAL/INSTALLATION [MZI-

3.7] .)

7. Remove in the order indicated in the table.

8. Install in the reverse order of removal.

9. Refill the engine coolant. (See ENGINE COOLANT REPLACEMENT [MZI-3.7] .)

10. Inspect for engine coolant leakage. (See ENGINE COOLANT LEAKAGE INSPECTION [MZI-

3.7] .)

WARNING:



Remove and install all parts when the engine is cold, otherwise they
can cause severe burns or serious injury.



When the battery cables are connected, touching the vehicle body
with generator terminal B will generate sparks. This can cause
personal injury, fire, and damage to the electrical components.
Always disconnect the negative battery cable before performing the
following operation.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Charging System (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 9:54:57 AM

Page 6

© 2005 Mitchell Repair Information Company, LLC.