seat adjustment INFINITI QX56 2006 Factory Owner's Manual

RFD-10
FRONT OIL SEAL
Revision: November 20092006 QX56
2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the total preload torque using Tool B.

The total preload torque should be within the total preload
torque specification. When not replacing the collapsible
spacer, it should also be equal to the measurement taken dur-
ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).

If the total preload torque is low, tighten the drive pinion lock
nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total
preload torque is met.
CAUTION:

Do not reuse drive pinion lock nut.

Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.

Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to RFD-15, "
COMPONENTS" .

Do not loosen drive pinion lock nut to adjust the total preload torque. If the total preload torque
exceeds the specifications, replace the collapsible spacer and tighten it again to adjust. Refer to
RFD-15, "
Disassembly and Assembly" .

After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-
tion malfunction, and other malfunctions.
4. Installation of the remaining components is in the reverse order of removal.
CAUTION:
Check the differential gear oil level after installation. Refer to RFD-8, "
Checking Differential Gear
Oil" .
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Total preload torque: Refer to RFD-16, "
To ta l P r e l o a d
To r q u e" .
WDIA0380E

REAR FINAL DRIVE ASSEMBLYRFD-27
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Revision: November 2009 2006 QX56
7. Press the drive pinion front bearing inner race to the drive pinion
as far as drive pinion lock nut can be tightened using suitable
spacer.
8. Apply multi-purpose grease to the lips of the new front oil seal. Then drive the new front oil seal in evenly until it becomes flush
with the gear carrier using Tool.
CAUTION:

Do not reuse front oil seal.

Do not incline the new front oil seal when installing.

Apply multi-purpose grease to the lips of the new front oil
seal.
9. Install the companion flange to the drive pinion while aligning the matching marks.
10. Apply anti-corrosive oil to the threads of the drive pinion and the seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using Tool A, and check
the drive pinion bearing preload torque using Tool B.
CAUTION:

Do not reuse drive pinion lock nut.

Apply anti-corrosive oil to the threads of the drive pinion
and the seating surface of the new drive pinion lock nut.

Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to RFD-15, "
COMPONENTS" .

If the drive pinion bearing preload torque exceeds the
specified value, replace collapsible spacer and tighten it
again to adjust. Do not loosen drive pinion lock nut to
adjust the drive pinion bearing preload torque.

After adjustment, rotate drive pinion back and forth 2 to 3
times to check for unusual noise, rotation malfunction,
and other malfunctions.
11. Check companion flange runout. Refer to RFD-18, "
Companion Flange Runout" .
12. Install the differential case assembly. Refer to RFD-28, "
Differential Assembly" .
SPD896
Tool number : ST15310000 ( — )
PDIA0563E
Tool number A: KV40104000 ( — )
B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque: 1.77 - 2.64 N·m (0.18 - 0.26 kg-m, 16 - 23 in-lb)
WDIA0379E

SE-8
SQUEAK AND RATTLE TROUBLE DIAGNOSES
Revision: November 20092006 QX56
TRUNK
Trunk noises are often caused by a loose jack or loose items put into the trunk by the owner.
In addition look for:
1. Trunk lid bumpers out of adjustment
2. Trunk lid striker out of adjustment
3. The trunk lid torsion bars knocking together
4. A loose license plate or bracket
Most of these incidents can be repaired by adjusting, securing or insulating the item(s) or component(s) caus-
ing the noise.
SUNROOF/HEADLINING
Noises in the sunroof/headlining area can often be traced to one of the following:
1. Sunroof lid, rail, linkage or seals making a rattle or light knocking noise
2. Sun visor shaft shaking in the holder
3. Front or rear windshield touching headliner and squeaking
Again, pressing on the components to stop the noise while duplicating the conditions can isolate most of these
incidents. Repairs usually consist of insulating with felt cloth tape.
OVERHEAD CONSOLE (FRONT AND REAR)
Overhead console noises are often caused by the console panel clips not being engaged correctly. Most of
these incidents are repaired by pushing up on the console at the clip locations until the clips engage.
In addition look for:
1. Loose harness or harness connectors.
2. Front console map/reading lamp lense loose.
3. Loose screws at console attachment points.
SEATS
When isolating seat noise it's important to note the position the seat is in and the load placed on the seat when
the noise is present. These conditions should be duplicated when verifying and isolating the cause of the
noise.
Cause of seat noise include:
1. Headrest rods and holder
2. A squeak between the seat pad cushion and frame
3. The rear seatback lock and bracket
These noises can be isolated by moving or pressing on the suspected components while duplicating the con-
ditions under which the noise occurs. Most of these incidents can be repaired by repositioning the component
or applying urethane tape to the contact area.
UNDERHOOD
Some interior noise may be caused by components under the hood or on the engine wall. The noise is then
transmitted into the passenger compartment.
Causes of transmitted underhood noise include:
1. Any component mounted to the engine wall
2. Components that pass through the engine wall
3. Engine wall mounts and connectors
4. Loose radiator mounting pins
5. Hood bumpers out of adjustment
6. Hood striker out of adjustment
These noises can be difficult to isolate since they cannot be reached from the interior of the vehicle. The best
method is to secure, move or insulate one component at a time and test drive the vehicle. Also, engine RPM
or load can be changed to isolate the noise. Repairs can usually be made by moving, adjusting, securing, or
insulating the component causing the noise.

AUTOMATIC DRIVE POSITIONERSE-13
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Revision: November 2009 2006 QX56
CANCEL OF FAIL-SAFE MODE
The mode is cancelled when the A/T selector lever is shifted to P position from any other position.
NOTE:
The front seat LH position and pedal adjustment functions (see the following table) operate simultaneously in
the order of priority.
*: In conjunction with sliding the seat, the door mirrors are positioned.
CAN Communication System DescriptionEIS004XG
Refer to LAN-26, "CAN COMMUNICATION" .
Steering wheel Same as above
Pedal adjust Same as above
OPERATED PORTION
T2
PriorityFunction PriorityFunction
1 Seat sliding, (door mirror LH/RH)* 4Seat reclining
2 Pedal 5Seat lifter-FR
3 Steering wheel 6Seat lifter-RR

SE-34
AUTOMATIC DRIVE POSITIONER
Revision: November 20092006 QX56
8. CHECK AUTOMATIC DRIVE POSITIONER CONTROL UNIT GROUND CIRCUIT
Check continuity between the automatic drive positioner control unit
connector M34 terminals 40, 48 and ground.
OK or NG
OK >> Automatic drive positioner control unit circuit is OK.
NG >> Repair or replace harness.
CONSULT-II Function (AUTO DRIVE POS.) EIS004XO
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II INSPECTION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carries out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector.
3. Turn ignition switch ON.
4. Touch “START (NISSAN BASED VHCL) ”.
40 - Ground
: Continuity should exist.
48 - Ground : Continuity should exist.
PIIA4544E
AUTO DRIVE POS.
diagnostic mode Description
WORK SUPPORT Supports inspections and adjustments. Commands are transmitted to the driver seat
control unit for setting the status suitable for required operation, input/output signals
are received from the driver seat control unit and received data is displayed.
SELF-DIAG RESULTS Displays driver seat control unit self-diagnosis results.
DATA MONITOR Displays driver seat control unit input/output data in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
ECU PART NUMBER Driver seat control unit part number can be read.
BBIA0369E
BCIA0029E

TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
Precautions for Transfer Assembly and Transfer
Control Unit Replacement ................................... ..... 4
METHOD FOR POSITION ADJUSTMENT ...... ..... 4
Precautions ......................................................... ..... 4
Service Notice .......................................................... 5
PREPARATION ...................................................... ..... 6
Special Service Tools .......................................... ..... 6
Commercial Service Tools ................................... ..... 9
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ... 10
NVH Troubleshooting Chart ................................ ... 10
TRANSFER FLUID ................................................ ....11
Replacement ....................................................... .... 11
DRAINING ........................................................ .... 11
FILLING ............................................................ .... 11
Inspection ............................................................ .... 11
FLUID LEAKAGE AND FLUID LEVEL ............. .... 11
ALL-MODE 4WD SYSTEM ................................... ... 12
Cross-section View ............................................. ... 12
Power Transfer .................................................... ... 13
POWER TRANSFER DIAGRAM ..................... ... 13
POWER TRANSFER FLOW ............................ ... 14
System Description ............................................. ... 15
CONTROL SYSTEM ........................................ ... 15
TRANSFER MOTOR ....................................... ... 16
WAIT DETECTION SWITCH ........................... ... 17
NEUTRAL-4LO SWITCH ................................. ... 17
ATP SWITCH ................................................... ... 17
2-4WD SHIFT SOLENOID VALVE ................... ... 17
CLUTCH PRESSURE SOLENOID VALVE ...... ... 18
LINE PRESSURE SWITCH ............................. ... 18
CLUTCH PRESSURE SWITCH ....................... ... 18
TRANSFER FLUID TEMPERATURE SENSOR ... 18
TRANSFER CONTROL UNIT .......................... ... 18
TRANSFER CONTROL DEVICE ..................... ... 18
4WD SHIFT SWITCH AND INDICATOR LAMP ... 184WD WARNING LAMP ....................................
... 19
ATP WARNING LAMP ...................................... ... 19
System Diagram ..................................................... 19 COMPONENTS FUNCTION ............................ ... 20
CAN Communication .............................................. 20 SYSTEM DESCRIPTION ................................. ... 20
TROUBLE DIAGNOSIS ......................................... ... 21
How to Perform Trouble Diagnosis ...................... ... 21
BASIC CONCEPT ............................................ ... 21
Location of Electrical Parts .................................. ... 22
Circuit Diagram ....................................................... 23
Wiring Diagram — T/F — .................................... ... 24
Inspections Before Trouble Diagnosis ................. ... 32
TRANSFER FLUID CHECK ............................. ... 32
PREPARATION FOR ROAD TEST .................. ... 32
CHECK BEFORE ENGINE IS STARTED ........ ... 32
CHECK AT IDLE ............................................... ... 32
CRUISE TEST ..................................................... 33
Trouble Diagnosis Chart for Symptoms ............... ... 34
Transfer Control Unit Input/Output Signal Refer-
ence Values ......................................................... ... 35
TRANSFER CONTROL UNIT INSPECTION
TABLE .............................................................. ... 35
CONSULT-II Function (ALL MODE AWD/4WD) .. ... 44
FUNCTION ....................................................... ... 44
CONSULT-II SETTING PROCEDURE ............. ... 44
SELF-DIAG RESULT MODE ............................ ... 45
DATA MONITOR MODE ................................... ... 47
WORK SUPPORT ............................................ ... 49
Self-diagnostic Procedure ................................... ... 50
SELF-DIAGNOSTIC PROCEDURE (WITH
CONSULT-II) .................................................... ... 50
SELF-DIAGNOSTIC PROCEDURE (WITHOUT
CONSULT-II) .................................................... ... 50
ERASE SELF-DIAGNOSIS .............................. ... 53
TROUBLE DIAGNOSIS FOR SYSTEM ................. ... 54
Power Supply Circuit For Transfer Control Unit ... ... 54
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ............................................. ... 54
TRANSFER CONTROL UNIT TERMINALS AND

TF-4
PRECAUTIONS
Revision: November 20092006 QX56
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EDS002H3
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.
WARNING:

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 Transfer Assembly and Transfer Control Unit ReplacementEDS002H4
When replacing transfer assembly or transfer control unit, check the 4WD shift indicator lamp as follows.
1. Turn ignition switch “ON ”.
2. Check 4WD shift indicator lamp is turned ON for approx. 1 second.

If OK, the position between transfer assembly and transfer control unit is correct.

If NG, the position is different between transfer assembly and transfer control unit.
Adjust the position between transfer assembly and transfer control unit. Refer to TF-4, "
METHOD FOR
POSITION ADJUSTMENT" .
METHOD FOR POSITION ADJUSTMENT
1. Start engine. Run the engine for at least 10 seconds.
2. Stop vehicle and move A/T selector lever to “N” position with brake pedal depressed. Stay in "N" for at
least 2 seconds.
3. Turn 4WD shift switch to “2WD ” position. Stay in "2WD" for at least 2 seconds.
4. Turn ignition switch “ OFF”.
5. Start engine.
6. Erase self-diagnosis. Refer to TF-47, "
How to Erase Self-diagnostic Results" (with CONSULT-II) or TF-
53, "ERASE SELF-DIAGNOSIS" (without CONSULT-II).
7. Check 4WD shift indicator lamp. Refer to TF-32, "
CHECK BEFORE ENGINE IS STARTED" .
If 4WD shift indicator lamp does not indicate "2WD", install new transfer control unit and retry the above
check.
PrecautionsEDS002H5

Before connecting or disconnecting the transfer control
unit harness connector, turn ignition switch “OFF” and dis-
connect battery ground cable. Failure to do so may damage
the transfer control unit. Battery voltage is applied to trans-
fer control unit even if ignition switch is turned “OFF”.
SEF289H

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tool ............................................ ..... 3
Commercial Service Tools ................................... ..... 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ........................................... ..... 4
NVH Troubleshooting Chart ................................ ..... 4
WHEEL .................................................................. ..... 5
Inspection ............................................................ ..... 5
WHEEL AND TIRE ASSEMBLY ............................ ..... 6
Balancing Wheels ............................................... ..... 6
REMOVAL ........................................................ ..... 6
WHEEL BALANCE ADJUSTMENT ................. ..... 6
Rotation ............................................................... ..... 7
LOW TIRE PRESSURE WARNING SYSTEM ....... ..... 8
System Components ........................................... ..... 8
System Description ............................................. ..... 8
TRANSMITTER ................................................ ..... 8
REMOTE KEYLESS ENTRY RECEIVER ........ ..... 8
BCM (BODY CONTROL MODULE) ................. ..... 9
WARNING LAMP AND BUZZER ..................... ..... 9
COMBINATION METER .................................. ..... 9
DISPLAY UNIT ................................................. ..... 9
CAN COMMUNICATION ....................................... ... 10
System Description ............................................. ... 10
TROUBLE DIAGNOSES ....................................... ....11
Wiring Diagram – T/WARN – .............................. .... 11
Terminals and Reference Values for BCM .......... ... 13
ID Registration Procedure ................................... ... 14
ID REGISTRATION WITH TRANSMITTER
ACTIVATION TOOL ......................................... ... 14
ID REGISTRATION WITHOUT TRANSMITTER
ACTIVATION TOOL ......................................... ... 16
Transmitter Wake Up Operation .......................... ... 18
WITH TRANSMITTER ACTIVATION TOOL ..... ... 18
CONSULT-II Function (BCM) .............................. ... 19
Self-Diagnosis ..................................................... ... 20DESCRIPTION .................................................
... 20
FUNCTION ....................................................... ... 20
CONSULT-II ...................................................... ... 20
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ................................................... ... 22
INTRODUCTION .............................................. ... 22
WORK FLOW ................................................... ... 22
Preliminary Check ............................................... ... 23
Malfunction Code/Symptom Chart ....................... ... 24
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC
ITEMS ..................................................................... ... 26
Inspection 1: Transmitter or Control Unit (BCM) .. ... 26
MALFUNCTION CODE NO. 21, 22, 23 OR 24
(DTC C1708, C1709, C1710 OR C1711) ......... ... 26
Inspection 2: Transmitter - 1 ................................ ... 26
MALFUNCTION CODE NO. 31, 32, 33, 34, 41,
42, 43, 44, 45, 46, 47 OR 48 ............................ ... 26
Inspection 3: Transmitter - 2 ................................ ... 27
MALFUNCTION CODE NO. 35, 36, 37 OR 38 ... 27
Inspection 4: Vehicle Speed Signal ..................... ... 28
MALFUNCTION CODE NO. 52 (DTC C1729) . ... 28
TROUBLE DIAGNOSIS FOR SYMPTOMS ........... ... 29
Inspection 1: Warning Lamp Does Not Come On
When Ignition Switch Is Turned On ..................... ... 29
Inspection 2: Low Tire Pressure Warning Lamp
Stays On When Ignition Switch Is Turned On ...... ... 30
Inspection 3: Warning Lamp Flashes When Ignition
Switch Is Turned On ............................................ ... 32
Inspection 4: Hazard Warning Lamp Flashes When
Ignition Switch Is Turned On ............................... ... 33
Inspection 5: “TIRE PRESSURE” Information In
Display Unit Does Not Exist ................................. ... 34
Inspection 6: ID Registration Cannot Be Completed ... 35
REMOVAL AND INSTALLATION .......................... ... 36
Transmitter (Pressure Sensor) ............................ ... 36
REMOVAL ........................................................ ... 36
INSTALLATION ................................................ ... 36
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 38
Road Wheel ............................................................ 38
Tire ...................................................................... ... 38

WW-1
WIPER, WASHER & HORN
K ELECTRICAL
CONTENTS
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Revision: November 2009 2006 QX56
PRECAUTION .......................................................
..... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
FRONT WIPER AND WASHER SYSTEM ............. ..... 4
Components Parts and Harness Connector Loca-
tion ...................................................................... ..... 4
System Description ............................................. ..... 4
LOW SPEED WIPER OPERATION ................. ..... 5
HI SPEED WIPER OPERATION ...................... ..... 5
INTERMITTENT OPERATION ......................... ..... 5
AUTO STOP OPERATION ............................... ..... 6
FRONT WASHER OPERATION ...................... ..... 6
MIST OPERATION ................................................ 6
FAIL-SAFE FUNCTION .................................... ..... 6
COMBINATION SWITCH READING FUNCTION ..... 6
CAN Communication System Description ........... ..... 6
Schematic ........................................................... ..... 7
Wiring Diagram — WIPER — ............................. ..... 8
Terminals and Reference Values for BCM .......... .... 11
Terminals and Reference Values for IPDM E/R .. ... 12
Work Flow ........................................................... ... 12
Preliminary Inspection ......................................... ... 12
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT .......................................... ... 12
CONSULT-II Function (BCM) .............................. ... 14
CONSULT-II OPERATION ............................... ... 14
WORK SUPPORT ............................................ ... 15
DATA MONITOR .............................................. ... 15
ACTIVE TEST .................................................. ... 16
CONSULT-II Function (IPDM E/R) ...................... ... 16
CONSULT-II OPERATION ............................... ... 16
DATA MONITOR .............................................. ... 17
ACTIVE TEST .................................................. ... 18
Front Wiper Does Not Operate ........................... ... 18
FRONT WIPER STOP POSITION IS INCOR-
RECT ............................................................... ... 21
ONLY FRONT WIPER LOW DOES NOT OPER-
ATE .................................................................. ... 22
ONLY FRONT WIPER HIGH DOES NOT OPER- ATE ..................................................................
... 24
ONLY FRONT WIPER INTERMITTENT DOES
NOT OPERATE ................................................ ... 25
FRONT WIPER INTERMITTENT OPERATION
SWITCH POSITION CANNOT BE ADJUSTED ... 26
WIPERS DO NOT WIPE WHEN FRONT
WASHER OPERATES ..................................... ... 26
FRONT WIPERS OPERATE FOR 10 SEC-
ONDS, STOP FOR 20 SECONDS, AND AFTER
REPEATING THIS OPERATION FIVE TIMES,
THEY BECOME INOPERATIVE ...................... ... 26
Front Wiper Arms ................................................ ... 28
REMOVAL AND INSTALLATION ..................... ... 28
FRONT WIPER ARM ADJUSTMENT .............. ... 28
Wiper Motor and Linkage .................................... ... 29
REMOVAL AND INSTALLATION ..................... ... 29
REMOVAL ........................................................ ... 29
INSTALLATION ................................................ ... 29
Washer Nozzle Adjustment ................................. ... 29
Washer Tube Layout ........................................... ... 30
Wiper and Washer Switch ................................... ... 30
REMOVAL AND INSTALLATION ..................... ... 30
INSTALLATION ................................................ ... 30
Washer Fluid Reservoir ....................................... ... 30
REMOVAL AND INSTALLATION ..................... ... 30
Washer Motor ...................................................... ... 31
REMOVAL AND INSTALLATION ..................... ... 31
INSTALLATION ................................................ ... 31
REAR WIPER AND WASHER SYSTEM ............... ... 32
Components Parts and Harness Connector Loca-
tion ....................................................................... ... 32
System Description .............................................. ... 32
REAR WIPER OPERATION ............................. ... 33
INTERMITTENT OPERATION ......................... ... 33
AUTO STOP OPERATION ............................... ... 34
REAR WASHER OPERATION ......................... ... 34
BCM WIPER SWITCH READING FUNCTION . ... 35
Wiring Diagram — WIP/R — .................................. 36
Terminals and Reference Values for BCM ........... ... 38
How to Proceed With Trouble Diagnosis ............. ... 40