2006 INFINITI QX56 Charging system

CHARGING SYSTEMSC-21
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Revision: November 2009 2006 QX56
WORK FLOW
WKIA4022E

SC-22
CHARGING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 1
Check Charge Warning Lamp Circuit
1. CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 3 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 3 connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect E205 connector from generator.
2. Apply ground to connector E205 terminal 3 with the ignition switch in the ON position.
OK or NG
OK >> GO TO SC-21, "WORK FLOW" .
NG >> Check the following.

10A fuse [No. 14, located in fuse block (J/B)]

Charge warning lamp

Harness for open or short between combination
meter and fuse

Harness for open or short between combination meter and generator
Charge warning lamp should
light up.
WKIA2110E

CHARGING SYSTEMSC-23
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Revision: November 2009 2006 QX56
DIAGNOSTIC PROCEDURE 2
Check Battery Circuit
1. CHECK BATTERY CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 1 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 1 connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK BATTERY CIRCUIT
Check voltage between generator connector E206 terminal 1 and
ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

140A fusible link (letter a , located in fusible link box)

Harness for open or short between generator and fus-
ible link
3. CHECK VOLTAGE DROP ON BATTERY CIRCUIT
1. Start the engine.
2. Check voltage between generator connector E206 terminal 1 and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the generator. Refer to SC-25, "Removal and
Installation" . Confirm repair by performing complete
Battery/Starting/Charging system test.
NG >> Check harness between the battery and the generator for poor continuity.
Battery voltage should exist.
W K I A 2 111 E
With engine running
at idle and warm.
: Less than 0.2V
WKIA2112E

SC-24
CHARGING SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE 3
Check Voltage Regulator Circuit
1. CHECK VOLTAGE REGULATOR CIRCUIT CONNECTION
1. Turn the ignition switch OFF.
2. Check to see if terminal 4 is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal 4 connection. Confirm repair by performing complete Battery/Starting/Charging system test.
2. CHECK VOLTAGE REGULATOR CIRCUIT
Check voltage between generator connector E205 terminal 4 and
ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

10A fuse (No. 30, located in fuse and fusible link box)

Harness for open or short between generator and
fuse
3. CHECK VOLTAGE DROP ON VOLTAGE REGULATOR CIRCUIT
1. Start the engine.
2. Check voltage between generator connector E205 terminal 4 and battery positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the generator. Refer to SC-25, "Removal and
Installation" . Confirm repair by performing complete
Battery/Starting/Charging system test.
NG >> Check harness between the battery and the generator for poor continuity.
Battery voltage should exist.
WKIA2113E
With engine running
at idle and warm.
: Less than 0.2V
WKIA2114E

CHARGING SYSTEMSC-25
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Revision: November 2009 2006 QX56
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate “CHARGE” warning lamp, if any of the following
symptoms occur while generator is operating:

Excessive voltage is produced.

No voltage is produced.
Removal and InstallationEKS00B7K
REMOVAL
1. Disconnect the negative battery terminal.
2. Remove the fan shroud. Refer to CO-14, "
Removal and Installation" .
3. Remove the drive belt. Refer to EM-13, "
Removal and Installation" .
4. Remove the lower bracket, using power tools.
5. Remove the generator upper bolt, using power tools.
6. Remove/disconnect the generator harness connectors.
7. Remove the generator.
INSTALLATION
Installation is in the reverse order of removal.

Install the generator and check the tension of the drive belt. Refer to EM-13, "DRIVE BELT TENSION" .
CAUTION:
Tighten terminal nut carefully.
WKIA1390E
Terminal nut : 10.8 N·m (1.1 kg-m, 8 ft-lb)