200 INFINITI QX56 2009 Factory Service Manual

CHG
B TERMINAL CIRCUITCHG-11
< COMPONENT DIAGNOSIS >
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K L
B A
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B TERMINAL CIRCUIT
DescriptionINFOID:0000000003776550
The terminal “1” circuit supplies power to charge the battery and operate the vehicles electrical system.
Diagnosis ProcedureINFOID:0000000003776551
1.CHECK TERMINAL “1” CONNECTION
1. Turn ignition switch OFF.
2. Verify terminal “1” is clean and tight.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair terminal “1” connection. Confirm repa ir by performing complete Starting/Charging system
test. Refer to diagnostic station instruction manual.
2.CHECK TERMINAL “1” CIRCUIT
Check voltage between generator connector E204 terminal 1 and
ground.
Is voltage reading as specified?
YES >> GO TO 3.
NO >> Check harness for open between generator and fusible link.
3.CHECK TERMINAL “1” CONNECTION (VOLTAGE DROP TEST)
1. Start engine, then engine running at idle and warm.
2. Check voltage between battery positive terminal and generator connector E204 terminal 1.
Is the voltage reading as specified?
YES >> Terminal “1” circuit is normal. Refer to CHG-5, "Work
Flow".
NO >> Check harness between battery and generator for high resistance.
(+) (-) Voltage
Connector Terminal
E204 1Ground Battery voltage
ALMIA0197ZZ
(+)
(-)Voltage
Connector Terminal
E204 1 Battery positive terminal Less than 0.2V
ALMIA0198ZZ
Revision: December 20092009 QX56

CHG-12
< COMPONENT DIAGNOSIS >
L TERMINAL CIRCUIT
L TERMINAL CIRCUIT
DescriptionINFOID:0000000003776552
The terminal “2” (L) circuit controls the charge warning lamp. The charge warning lamp illuminates when the
ignition switch is set to ON or START. When the generator is providing sufficient voltage with the engine run-
ning, the charge warning lamp will go off. If the c harge warning lamp illuminates with the engine running, a
malfunction is indicated.
Diagnosis ProcedureINFOID:0000000003776553
1.CHECK CHARGE WARNING LAMP CIRCUIT CONNECTION
Verify generator connector E205 terminal 2 is clean and tight.
Is the connection secure?
YES >> GO TO 2.
NO >> Repair the connection. Confirm repair by per forming complete Starting/Charging system test.
Refer to diagnostic station instruction manual.
2.CHECK CHARGE WARNING LAMP CIRCUIT
1. Disconnect generator connector E205.
2. Apply ground to generator harness connector E205 terminal 2 with the ignition switch in the ON position.
Does the charge lamp illuminate?
YES >> Check generator function. Refer to CHG-5, "Work Flow".
NO >> GO TO 3.
3.CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect the generator connector E205 and combination meter connector M24.
3. Check continuity between generator harness connector E205 (A) terminal 2 and combination meter harness connector M24
(B) terminal 6.
4. Check continuity between generator harness connector E205 (A) terminal 2 and ground.
Are the continuity results as specified?
YES >> Replace the combination meter. Refer to MWI-102, "Removal and Installation".
NO >> Repair the harness or connector. Charge lamp should illuminate
ALMIA0200ZZ
AB
Continuity
Connector Terminal Connector Terminal
E205 2M24 6Yes
A —
Continuity
Connector Terminal
E205 2Ground No
AWMIA1099ZZ
Revision: December 20092009 QX56

CHG
S TERMINAL CIRCUITCHG-13
< COMPONENT DIAGNOSIS >
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S TERMINAL CIRCUIT
DescriptionINFOID:0000000003776554
The output voltage of the generator is controlled by the IC
regulator at terminal “3” (S) detecting the input volt-
age. Terminal “3” circuit detects the battery voltage to adjust the generator output voltage with the IC regulator.
Diagnosis ProcedureINFOID:0000000003776555
1.CHECK VOLTAGE REGULATOR CIRCUIT CONNECTION
Check to see if connector E205 terminal 3 is clean and tight.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair terminal connection. Confirm repair by performing complete Starting/Charging system test.
Refer to diagnostic station instruction manual.
2.CHECK VOLTAGE REGULATOR CIRCUIT
Check voltage between generator harness connector E205 terminal
3 and ground.
Does battery voltage exist?
YES >> Refer to CHG-5, "Work Flow".
NO >> Check harness for open between generator and fuse. 3 - ground
Battery voltage
ALMIA0201ZZ
Revision: December 20092009 QX56

CHG-14
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
CHARGING SYSTEM
Wiring DiagramINFOID:0000000003776556
AWMWA0369G
Revision: December 20092009 QX56

CHG
CHARGING SYSTEMCHG-15
< COMPONENT DIAGNOSIS >
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B A
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ABMIA0045GB
Revision: December 20092009 QX56

CHG-16
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
ABMIA0046GB
Revision: December 20092009 QX56

CHG
CHARGING SYSTEMCHG-17
< COMPONENT DIAGNOSIS >
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B A
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ABMIA0047GB
Revision: December 20092009 QX56

CHG-18
< COMPONENT DIAGNOSIS >
CHARGING SYSTEM
ABMIA0048GB
Revision: December 20092009 QX56

CHG
CHARGING SYSTEMCHG-19
< SYMPTOM DIAGNOSIS >
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B A
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SYMPTOM DIAGNOSIS
CHARGING SYSTEM
Symptom TableINFOID:0000000003776557
Symptom
Reference
Battery discharged
Refer to CHG-5, "
Work Flow".
The charge warning lamp does not illuminate when the ignition
switch is set to ON.
The charge warning lamp does not turn OFF after the engine
starts.
The charging warning lamp turns ON when increasing the engine
speed.
Revision: December 20092009 QX56

CHG-20
< ON-VEHICLE REPAIR >
GENERATOR
ON-VEHICLE REPAIR
GENERATOR
Removal and InstallationINFOID:0000000003776558
REMOVAL
1. Disconnect the negative battery terminal. Refer to PG-76, "Removal and Installation".
2. Remove the fan shroud. Refer to CO-15, "
Removal and Installation".
3. Remove the drive belt. Refer to EM-13, "
Removal and Installation".
4. Remove lower bracket, using power tools.
5. Remove the generator upper bolt, using power tools.
6. 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, "
Checking Drive Belts".
CAUTION:
Tighten terminal nut carefully.
WKIA1390E
Terminal nut : 10.8 N·m (1.1 kg-m, 8 ft-lb)
Revision: December 20092009 QX56