2004 INFINITI QX56 sensor

AUTOMATIC DRIVE POSITIONER
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2. CHECK HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and steering wheel tilt sensor connector.
2. Check continuity between automatic drive positioner connector M33, M34 terminals 7, 33, 41 and steering
wheel tilt sensor connector M69 terminals 2, 3, 4.
3. Check continuity between automatic drive positioner control unit
connectors M33, M34 terminals 7, 33, 41 and ground.
OK or NG
OK >> Replace steering wheel tilt motor.
NG >> Repair or replace harness.7 (Y/BR) - 3 (Y/BR) : Continuity should exist.
33 (W/L) - 2 (W/L) : Continuity should exist.
41 (W/G) - 4 (W/G) : Continuity should exist.
7 (Y/BR) - Ground : Continuity should not exist.
33 (W/L) - Ground : Continuity should not exist.
41 (W/G) - Ground : Continuity should not exist.
LIIA1432E

SE-80
AUTOMATIC DRIVE POSITIONER
Revision: August 20072004 QX56
4. CHECK SEAT MEMORY SWITCH INDICATOR SIGNAL
1. Connect seat memory switch.
2. Turn ignition switch ON.
3. Check voltage between automatic drive positioner control unit
connector M33 terminals 12, 13 and ground.
OK or NG
OK >> Replace automatic drive positioner control unit.
NG >> Replace seat memory switch.
Door Mirror Sensor Power Supply and Ground Circuit inspectionEIS002Z8
1. CHECK DOOR MIRROR SENSOR CIRCUIT HARNESS CONTINUITY
1. Disconnect automatic drive positioner control unit and door mirror (LH and RH).
2. Check continuity between automatic drive positioner control unit connector M34 terminals 33, 41 and door
mirror connector D4 (LH), D107 (RH) terminals 5, 6.
3. Check continuity between automatic drive positioner control unit
connector M34 terminals 33, 41 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness.
2. CHECK MIRROR SENSOR POWER SUPPLY
1. Connect automatic drive positioner control unit and door mirror
LH.
2. Turn ignition switch to ACC.
3. Check voltage between automatic drive positioner control unit
connector M34 terminal 33 and ground.
OK or NG
OK >> GO TO 3.
NG >> Replace automatic drive positioner control unit.12 (P) - Ground : Battery voltage
13 (Y/G) - Ground : Battery voltage
LIIA1134E
33 (W/L) - 5 (W/L) : Continuity should exist.
41 (W/G) - 6 (W/G) : Continuity should exist.
33 (W/L) - Ground : Continuity should not exist.
41 (W/G) - Ground : Continuity should not exist.
LIIA1023E
33 (W/L) - Ground : Approx. 5V
LIIA1136E

AUTOMATIC DRIVE POSITIONER
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3. CHECK MIRROR SENSOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between automatic drive positioner control unit
connector M34 terminal 41 and ground.
OK or NG
OK >> Check the condition of the harness and connector.
NG >> Replace automatic drive positioner control unit.
A/T Device (Detent Switch) Circuit InspectionEIS002Z9
1. CHECK FUNCTION
With CONSULT-II
Check that when the A/T shift lever is in P position, “DETENT SW”
on the DATA MONITOR becomes OFF.
Without CONSULT-II
GO TO 2.
OK or NG
OK >> A/T device (detent switch) circuit is OK.
NG >> GO TO 2.
2. CHECK A/T DEVICE (DETENT SWITCH) HARNESS
1. Turn ignition switch OFF.
2. Disconnect A/T device and driver seat control unit.
3. Check continuity between A/T device connector M203 terminal 6
and driver seat control unit connector P2 terminal 21.
4. Check continuity between A/T device connector M203 terminal 6
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace harness.41 (W/G) - Ground : Continuity should exist.
LIIA1135E
Monitor item
[OPERATION or UNIT]Contents
DETENT SW“ON/
OFF”The selector lever position “P position (OFF)/other than P
position (ON)” judged from the park switch signal is dis-
played.
PIIA0291E
6 (L/R) - 21 (L/R) : Continuity should exist.
6 (L/R) - Ground : Continuity should not exist.
LIIA1024E

FRONT SEAT
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Removal and InstallationEIS007N5
REMOVAL
NOTE:
When removing or installing the seat trim, handle it carefully to keep dirt out and avoid damage.
CAUTION:

Before removing the front seat, turn the ignition switch off, disconnect both battery cables and
wait at least 3 minutes.

When checking the power seat circuit for continuity using a circuit tester, do not confuse its con-
nector with the side air bag module connector. Such an error may cause the air bag to deploy.

Do not drop, tilt, or bump the side air bag module while installing the seat. Always handle it with
care.

After front side air bag module inflates, front seatback assembly must be replaced.

Front passenger seat is equipped with an Occupant Classification System sensor and control
module. Do not disassemble front passenger seat cushion assembly or remove the trim as this
will affect the Occupant Classification System calibration.

Always replace passenger seat cushion as an assembly.
1. Slide the seat until the four body mounting bolts are visible and a tool can be inserted.
NOTE:

If disassembling the seat after removal, set the front/rear cushion lifters to the top position.
2. Disconnect both battery cables and wait at least 3 minutes.
3. Disconnect the side air bag module harness connector.
4. Remove the four body mounting bolts.
5. Disconnect the power seat harness connectors and remove the seat from the vehicle.
NOTE:
When removing and installing the seat, use shop cloths to protect the vehicle from damage.
INSTALLATION

Installation is in the reverse order of removal.
Disassembly and AssemblyEIS002ZJ
SEATBACK TRIM AND PAD
Disassembly
NOTE:
Only complete seatback assemblies can be replaced on vehicles equipped with side air bags.
NOTE:
Be sure to set the front/rear cushion lifter to the top position.
Driver Seat
1. Remove the headrest.
7. Outboard reclining arm outer cover 8. Outboard reclining arm inner cover 9. Inboard reclining arm inner cove
10. Latch cover 11. LH outer leg cover 12. Outboard reclining arm inner cover
13. Seat cushion inner cover 14. Passenger seat wiring harness 15. Inner front leg cover
16. Power seat frame assembly 17. NVH assembly 18. Seat cushion front finisher
19. Outer pedestal finisher 20. Seat cushion outer finisher 21. Seat cushion assembly
22. Power seat switch escutcheon 23. Slide switch knob 24. Recliner switch knob
25. Seatback assembly 26. Headrest holder 27. Seat slide/ recline switch
28. Power lumbar switch

FRONT SEAT
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4. From inside of the seatback, squeeze the headrest holder tabs
at the base of the stay pipe and pull up to remove.
NOTE:
Before installing the headrest holder, check its orientation (front/
rear and right/left).
Assembly
Assembly is in the reverse order of disassembly.
REMOVAL OF SEATBACK ASSEMBLY
1. Remove the headrest.
2. For driver seatback unhook the j-channel. For passenger seatback, remove the seatback board from the
back of the seatback.
3. Remove the side air bag harness connector from the seat cushion.
4. Remove the mounting bolts (2 for each side) and seatback assembly.
INSTALLATION OF SEATBACK ASSEMBLY

Installation is in the reverse order of removal.
SEAT CUSHION TRIM AND PAD
Disassembly
CAUTION:

Front passenger seat is equipped with an Occupant Classification System sensor and control
module. Do not disassemble front passenger seat cushion assembly or remove the trim as this
will affect the Occupant Classification System calibration.

Always replace passenger seat cushion as an assembly.

When removed, the passenger seat cushion must always be placed pan side UP to prevent dam-
age.

During installation, the wire harness clips must be reinstalled in the holes they were originally in.
Do not add additional clips.

The Occupant Classification System control module can only be replaced as part of the seat cush-
ion assembly.
NOTE:
If the vehicle has been involved in a collision the seat must be inspected for damage. Refer to SRS-60, "
COL-
LISION DIAGNOSIS" .
1. Remove the power seat switch knobs, power seat switch
escutcheon and lumbar switch bezel.
2. Remove the power seat and power lumbar switches.
LRS023
LIIA1581E

SRS-1
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
H RESTRAINTS
CONTENTS
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SECTION SRS
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SRS
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions for SRS “AIR BAG” and “SEAT BELT
PRE-TENSIONER” Service ..................................... 3
Occupant Classification System Precaution ............ 3
Trouble Diagnosis Precaution .................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ....... 5
SRS Configuration ................................................... 5
Front Seat Belt Pre-tensioner with Load Limiter ...... 6
Front Side Air Bag .................................................... 6
Side Curtain Air Bag ................................................. 6
Occupant Classification System ............................... 6
Direct-connect SRS Component Connectors ........... 7
TROUBLE DIAGNOSIS .............................................. 8
Trouble Diagnosis Introduction ................................. 8
DIAGNOSIS FUNCTION ....................................... 8
HOW TO PERFORM TROUBLE DIAGNOSES
FOR QUICK AND ACCURATE REPAIR ............... 8
WORK FLOW ........................................................ 9
SRS Components Parts Location ........................... 10
Schematic ...............................................................11
Wiring Diagram — SRS — ..................................... 12
CONSULT-II Function (AIR BAG) ........................... 18
CONSULT-II Function ............................................ 18
HOW TO CHANGE SELF-DIAGNOSIS MODE
WITH CONSULT-II .............................................. 18
HOW TO ERASE SELF-DIAGNOSIS RESULTS ... 19
Self-Diagnosis Function (Without CONSULT-II) ..... 19
HOW TO CHANGE SELF-DIAGNOSIS MODE ... 19
HOW TO ERASE SELF-DIAGNOSIS RESULTS ... 20
SRS Operation Check ............................................ 20
DIAGNOSTIC PROCEDURE 1 ........................... 20
Trouble Diagnosis With CONSULT-II ..................... 22
DIAGNOSTIC PROCEDURE 2 ........................... 22
DIAGNOSTIC PROCEDURE 3 ........................... 28DIAGNOSTIC PROCEDURE 4 (CONTINUED
FROM DIAGNOSTIC PROCEDURE 2) .............. 30
DIAGNOSTIC PROCEDURE 5 ........................... 30
Trouble Diagnosis Without CONSULT-II ................. 37
DIAGNOSTIC PROCEDURE 6 ........................... 37
WARNING LAMP FLASH CODE CHART ........... 38
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn Off ............................................................ 43
DIAGNOSTIC PROCEDURE 6 ........................... 43
Trouble Diagnosis: “AIR BAG” Warning Lamp Does
Not Turn On ............................................................ 44
DIAGNOSTIC PROCEDURE 7 ........................... 44
DRIVER AIR BAG MODULE .................................... 45
Removal and Installation ........................................ 45
REMOVAL ........................................................... 45
INSTALLATION ................................................... 46
SPIRAL CABLE ........................................................ 47
Removal and Installation ........................................ 47
REMOVAL ........................................................... 47
INSTALLATION ................................................... 48
FRONT PASSENGER AIR BAG MODULE .............. 50
Removal and Installation ........................................ 50
REMOVAL ........................................................... 50
INSTALLATION ................................................... 50
WIRING HARNESS MODIFICATION .................. 51
SIDE CURTAIN AIR BAG MODULE ........................ 53
Removal and Installation ........................................ 53
REMOVAL ........................................................... 53
INSTALLATION ................................................... 53
CRASH ZONE SENSOR ........................................... 55
Removal and Installation ........................................ 55
REMOVAL ........................................................... 55
INSTALLATION ................................................... 55
SIDE AIR BAG (SATELLITE) SENSOR ................... 56
Removal and Installation ........................................ 56
REMOVAL ........................................................... 56
INSTALLATION ................................................... 56
FRONT SEAT BELT PRE-TENSIONER ................... 57
Removal and Installation ........................................ 57

SRS-2Revision: August 20072004 QX56 DIAGNOSIS SENSOR UNIT ..................................... 58
Removal and Installation ........................................ 58
REMOVAL ........................................................... 58
INSTALLATION .................................................... 58
ECU DISCRIMINATED NO. ................................. 58
OCCUPANT CLASSIFICATION SYSTEM CON-
TROL UNIT ................................................................ 59
Removal and Installation ........................................ 59
COLLISION DIAGNOSIS .......................................... 60
For Frontal Collision ................................................ 60
SRS INSPECTION (FOR FRONTAL COLLI-
SION) ................................................................... 60For Side Collision ....................................................61
WHEN SRS IS ACTIVATED IN THE SIDE COL-
LISION .................................................................61
WHEN SRS IS NOT ACTIVATED IN THE SIDE
COLLISION ..........................................................61
SRS INSPECTION (FOR SIDE COLLISION) ......61
For Rollover ............................................................62
WHEN SRS IS ACTIVATED IN THE ROLLOVER ...62
WHEN SRS IS NOT ACTIVATED IN THE ROLL-
OVER ...................................................................62
SRS INSPECTION (FOR ROLLOVER) ...............63

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EHS000VY
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 and SB section of this Service Man-
ual.
WA RN ING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

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
harness connectors.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceEHS000VZ

Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.

Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.

The air bag diagnosis sensor unit must always be installed with the arrow mark “⇐” pointing toward the
front of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or
rust before installation and replace as required.

The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.

Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and seat mounted front side air bag module standing with the stud bolt side facing
down.

Conduct self-diagnosis to check entire SRS for proper function after replacing any components.

After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Occupant Classification System PrecautionEHS000W0
Replace control unit and passenger front seat cushion as an assembly.
Trouble Diagnosis PrecautionEHS000W1
When you read wiring diagrams, refer to the following:

GI-15, "How to Read Wiring Diagrams" in GI section

PG-4, "POWER SUPPLY ROUTING CIRCUIT" in PG section
When you perform trouble diagnosis, refer to the following:

GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section

GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
Check for any service bulletins before servicing the vehicle.