Index Infiniti Infiniti QX56 (Z62) - service repair manual 2011 year

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Infiniti QX56 (Z62). Manual - part 507

EC-6

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0527 COOLING FAN SPEED SENSOR .......

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Cooling Fan Speed Sen-
sor) ........................................................................

P0550 PSP SENSOR .......................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Power Steering Pressure
Sensor) ..................................................................

P0603 ECM POWER SUPPLY ........................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0605 ECM ......................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0607 ECM ......................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0611 ECM PROTECTION .............................

Description .............................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P062B ECM .....................................................

Description .............................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0643 SENSOR POWER SUPPLY .................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P0850 PNP SWITCH .......................................

Description .............................................................

DTC Logic ..............................................................

Component Function Check ..................................

Diagnosis Procedure .............................................

P1087, P1088 VVEL SYSTEM ........................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P1089, P1092 VVEL CONTROL SHAFT PO-
SITION SENSOR .............................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P1090, P1093 VVEL ACTUATOR MOTOR .....

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (VVEL ACTUATOR MO-
TOR ASSEMBLY) .................................................

Component Inspection (VVEL ACTUATOR
HOUSING ASSEMBLY) ........................................

P1091 VVEL ACTUATOR MOTOR RELAY .....

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (VVEL Actuator Motor Re-
lay) ........................................................................

P1148, P1168 CLOSED LOOP CONTROL .....

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1197 OUT OF GAS ........................................

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1212 TCS COMMUNICATION LINE ..............

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1217 ENGINE OVER TEMPERATURE .........

DTC Logic .............................................................

Component Function Check .................................

Diagnosis Procedure .............................................

P1220 FUEL PUMP CONTROL MODULE
(FPCM) ..............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (FPCM) ............................

P1225 TP SENSOR ..........................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1226 TP SENSOR ..........................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1421 COLD START CONTROL .....................

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1423, P1424 COLD START CONTROL ........

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1550 BATTERY CURRENT SENSOR ...........

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (Battery Current Sensor) ..

P1551, P1552 BATTERY CURRENT SEN-
SOR ..................................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (Battery Current Sensor) ..

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P1553 BATTERY CURRENT SENSOR ...........

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (Battery Current Sensor) ..

P1554 BATTERY CURRENT SENSOR ...........

DTC Logic .............................................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection (Battery Current Sensor) ..

P1556, P1557 BATTERY TEMPERATURE
SENSOR ...........................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (Battery Temprature Sen-
sor) ........................................................................

P1564 ASCD STEERING SWITCH ..................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (ASCD Steering Switch) ...

P1564 ICC STEERING SWITCH ......................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (ICC Steering Switch) .......

P1568 ICC FUNCTION .....................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1572 ASCD BRAKE SWITCH .......................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (ASCD Brake Switch) .......

Component Inspection (Stop Lamp Switch) ..........

P1572 ICC BRAKE SWITCH ...........................

DTC Logic .............................................................

Diagnosis Procedure .............................................

Component Inspection (ICC Brake Switch) ...........

Component Inspection (Stop Lamp Switch) ..........

P1574 ASCD VEHICLE SPEED SENSOR ......

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1574 ICC VEHICLE SPEED SENSOR ..........

Description ............................................................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1606 VVEL CONTROL MODULE ..................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1607 VVEL CONTROL MODULE ..................

DTC Logic .............................................................

Diagnosis Procedure .............................................

P1608 VVEL SENSOR POWER SUPPLY ......

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P1805 BRAKE SWITCH .................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Stop Lamp Switch) ..........

P2100, P2103 THROTTLE CONTROL MO-
TOR RELAY ....................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ......................................................

Description .............................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection ...........................................

Special Repair Requirement ..................................

P2118 THROTTLE CONTROL MOTOR .........

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Electric Throttle Control
Motor) ....................................................................

P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR .....................................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

P2122, P2123 APP SENSOR .........................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Accelerator Pedal Posi-
tion Sensor) ...........................................................

P2127, P2128 APP SENSOR .........................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Accelerator Pedal Posi-
tion Sensor) ...........................................................

P2135 TP SENSOR .........................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Throttle Position Sensor)

P2138 APP SENSOR ......................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection (Accelerator Pedal Posi-
tion Sensor) ...........................................................

P2539, P2541, P2542 LOW FUEL PRES-
SURE SENSOR ...............................................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

Component Inspection ...........................................

EC-8

P2A00, P2A03 A/F SENSOR 1 .......................

DTC Logic ..............................................................

Diagnosis Procedure .............................................

ASCD BRAKE SWITCH ..................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection (ASCD Brake Switch) .......

ASCD INDICATOR ..........................................

Component Function Check ..................................

Diagnosis Procedure .............................................

ELECTRICAL LOAD SIGNAL .........................

Description .............................................................

Component Function Check ..................................

Diagnosis Procedure .............................................

ELECTRICALLY-CONTROLLED COOLING
FAN COUPLING ..............................................

Component Function Check ..................................

Diagnosis Procedure .............................................

FUEL INJECTOR .............................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection ...........................................

HIGH PRESSURE FUEL PUMP ......................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection ...........................................

ICC BRAKE SWITCH ......................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection (ICC Brake Switch) ...........

IGNITION SIGNAL ...........................................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection (Ignition Coil with Power
Transistor) .............................................................

Component Inspection (Condenser) ......................

INFORMATION DISPLAY (ASCD) ..................

Component Function Check ..................................

Diagnosis Procedure .............................................

LOW PRESSURE FUEL PUMP ......................

Component Function Check ..................................

Diagnosis Procedure .............................................

Component Inspection (Low Pressure Fuel Pump)

..

Component Inspection (FPCM) .............................

MALFUNCTION INDICATOR LAMP ...............

Component Function Check ..................................

Diagnosis Procedure .............................................

ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) .....................................................

Component Function Check .................................

Diagnosis Procedure .............................................

Component Inspection (EVAP Vapor Cut Valve) ..

REFRIGERANT PRESSURE SENSOR ...........

Component Function Check .................................

Diagnosis Procedure .............................................

SNOW MODE SWITCH ....................................

Description ............................................................

Component Function Check .................................

Diagnosis Procedure .............................................

Component Inspection ..........................................

SYMPTOM DIAGNOSIS ...........................

ENGINE CONTROL SYSTEM SYMPTOMS ....

Symptom Table .....................................................

NORMAL OPERATING CONDITION ...............

Description ............................................................

PERIODIC MAINTENANCE ......................

IDLE SPEED .....................................................

Inspection ..............................................................

IGNITION TIMING .............................................

Inspection ..............................................................

EVAP LEAK CHECK ........................................

Inspection ..............................................................

POSITIVE CRANKCASE VENTILATION .........

Inspection ..............................................................

REMOVAL AND INSTALLATION .............

ECM ..................................................................

Removal and Installation .......................................

VVEL CONTROL MODULE .............................

Removal and Installation .......................................

FUEL PUMP CONTROL MODULE (FPCM) ....

Removal and Installation .......................................

SERVICE DATA AND SPECIFICATIONS
(SDS) .........................................................

SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................

Idle Speed .............................................................

Ignition Timing .......................................................

Calculated Load Value ..........................................

Mass Air Flow Sensor ...........................................

PRECAUTIONS

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PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000006219727

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution for Procedure without Cowl Top Cover

INFOID:0000000006217650

When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.

Precautions For Xenon Headlamp Service

INFOID:0000000006217651

WARNING:

Comply with the following warnings to prevent any serious accident.
• Disconnect the battery cable (negative terminal) or the power supply fuse before installing, remov-

ing, or touching the xenon headlamp (bulb included). The xenon headlamp contains high-voltage
generated parts.

• Never work with wet hands.
• Check the xenon headlamp ON-OFF status after assembling it to the vehicle. Never turn the xenon

headlamp ON in other conditions. Connect the power supply to the vehicle-side connector.
(Turning it ON outside the lamp case may cause fire or visual impairments.)

• Never touch the bulb glass immediately after turning it OFF. It is extremely hot.

PIIB3706J

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