2007 INFINITI QX56 Factory Service Manual

Page 1529 of 3061

INFINITI QX56 2007  Factory Service Manual EC-446
< SERVICE INFORMATION >
DTC P0605 ECM
2. Perform initialization of IVIS(NATS) system and registration of all IVIS(NATS) ignition key IDs. Refer to
BL-117, "
ECM Re-communicating Function".
3. P

Page 1530 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0643 SENSOR POWER SUPPLY
EC-447
< SERVICE INFORMATION >
C
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F
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EC
N
P O
DTC P0643 SENSOR POWER SUPPLY
On Board Diagnosis LogicINFOID:0000000003531961
This self-diagnosis has the o

Page 1531 of 3061

INFINITI QX56 2007  Factory Service Manual EC-448
< SERVICE INFORMATION >
DTC P0643 SENSOR POWER SUPPLY
Wiring Diagram
INFOID:0000000003531963
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

Page 1532 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0643 SENSOR POWER SUPPLY
EC-449
< SERVICE INFORMATION >
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P O
Diagnosis ProcedureINFOID:0000000003531964
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loose

Page 1533 of 3061

INFINITI QX56 2007  Factory Service Manual EC-450
< SERVICE INFORMATION >
DTC P0643 SENSOR POWER SUPPLY
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor te

Page 1534 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0643 SENSOR POWER SUPPLY
EC-451
< SERVICE INFORMATION >
C
D
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F
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EC
N
P O
3. Perform EC-77, "Throttle Valve Closed Position Learning" .
4. Perform EC-78, "
Idle Air Volume Learning"

Page 1535 of 3061

INFINITI QX56 2007  Factory Service Manual EC-452
< SERVICE INFORMATION >
DTC P0850 PNP SWITCH
DTC P0850 PNP SWITCH
Component DescriptionINFOID:0000000003531965
When the gear position is P or N, park/neutral position (PNP) switch is ON.
TCM de

Page 1536 of 3061

INFINITI QX56 2007  Factory Service Manual DTC P0850 PNP SWITCH
EC-453
< SERVICE INFORMATION >
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3. Select “DATA MONITOR” mode with CONSULT-II.
4. Start engine and warm it up to normal operating temperature.
5