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SUSPENSION

WT
A

B
SECTION
ROAD WHEELS & TIRES C

WT
CONTENTS
BASIC INSPECTION ................................... 3
. Special Repair Requirement ...................................18
. F

DIAGNOSIS AND REPAIR WORKFLOW ......... 3
. C1729 VEHICLE SPEED SIGNAL .................... 19
Repair Work Flow ..................................................... 3
. Description ..............................................................19
.
G
DTC Logic ...............................................................19
.
INSPECTION AND ADJUSTMENT .................... 5
. Diagnosis Procedure ..............................................19 .
Preliminary Check .................................................... 5
. Special Repair Requirement ...................................19 .
Transmitter Wake Up Operation .............................. 5 . H
ID Registration Procedure ........................................ 6
. C1735 IGNITION SIGNAL ................................. 20
Description ..............................................................20
.
FUNCTION DIAGNOSIS .............................. 8
. DTC Logic ...............................................................20
. I
Diagnosis Procedure ..............................................20 .
TPMS .................................................................. 8
. Special Repair Requirement ...................................20 .
System Diagram ....................................................... 8
.
System Description .................................................. 8
. ECU DIAGNOSIS ........................................ 21
. J
System Component ................................................ 10
.
BCM (BODY CONTROL MODULE) ................. 21
DIAGNOSIS SYSTEM (BCM) ...........................11
. Reference Value .....................................................21
. K
CONSULT-III Function (BCM) ................................ 11
. Terminal Layout ......................................................24
.
Self-Diagnosis (Without CONSULT-III) .................. 12
. Physical Values ......................................................25
.
Wiring Diagram - TIRE PRESSURE MONITOR-
COMPONENT DIAGNOSIS ........................ 14
. ING SYSTEM - .......................................................30
. L
Self-Diagnosis (With CONSULT-III) .......................32 .
C1708 - C1711 DATA FROM TRANSMITTER
Self-Diagnosis (Without CONSULT-III) ..................33 .
NOT BEING RECEIVED ....................................14
. M
Description ............................................................. 14
. SYMPTOM DIAGNOSIS ............................. 35
.
DTC Logic .............................................................. 14
.
Diagnosis Procedure .............................................. 14. TPMS ................................................................. 35
Special Repair Requirement .................................. 15 . Symptom Table ......................................................35
. N

C1712 - C1715, C1720 - C1723, C1724 - LOW TIRE PRESSURE WARNING LAMP
C1727 TRANSMITTER MALFUNCTION ..........16
. DOES NOT TURN ON ....................................... 36 O
Description ............................................................. 16
. Low Tire Pressure Warning Lamp Does Not Come
DTC Logic .............................................................. 16
. On When Ignition Switch Is Turned On ..................36
.
Diagnosis Procedure .............................................. 16.
LOW TIRE PRESSURE WARNING LAMP P
Special Repair Requirement .................................. 17 .
STAYS ON ........................................................ 37
C1716 - C1719 TRANSMITTER PRESSURE Low Tire Pressure Warning Lamp Stays On When
MALFUNCTION .................................................18
. Ignition Switch Is Turned On ..................................37
.
Description ............................................................. 18
.
DTC Logic .............................................................. 18
. LOW TIRE PRESSURE WARNING LAMP
Diagnosis Procedure .............................................. 18. BLINKS ............................................................. 38

Revision: October 2008 WT-1 2009 Xterra
Low Tire Pressure Warning Lamp Flashes When NOISE, VIBRATION AND HARSHNESS
Ignition Switch Is Turned On ................................. 38
. (NVH) TROUBLESHOOTING ........................... 43
.
NVH Troubleshooting Chart ................................... 43
.
HAZARD WARNING LAMPS FLASH .............. 39
.
Hazard Warning Lamps Flash When Ignition ON-VEHICLE MAINTENANCE .................. 44
Switch Is Turned On .............................................. 39
.
WHEEL ............................................................. 44
.
ID REGISTRATION CANNOT BE COMPLET- Inspection ............................................................... 44
.
ED ..................................................................... 40
.
ID Registration Cannot Be Completed .................. 40
. ON-VEHICLE REPAIR ............................... 45
PRECAUTION ............................................ 41
. WHEEL AND TIRE ASSEMBLY ...................... 45
.
Balancing Wheels .................................................. 45 .
PRECAUTIONS ................................................ 41
. Rotation .................................................................. 46
.
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- REMOVAL AND INSTALLATION .............. 48
SIONER" ................................................................ 41
.
Precaution for work ................................................ 41
. REMOVAL AND INSTALLATION .................... 48
.
Transmitter (Pressure Sensor) ............................... 48
.
PREPARATION .......................................... 42
.
SERVICE DATA AND SPECIFICATIONS
PREPARATION ................................................ 42
. (SDS) .......................................................... 50
Special Service Tool .............................................. 42
.
Commercial Service Tool ...................................... 42
. SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................ 50
.
SYMPTOM DIAGNOSIS ............................ 43
. Road Wheel ........................................................... 50 .
Tire ......................................................................... 50
.

Revision: October 2008 WT-2 2009 Xterra
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Repair Work Flow INFOID:0000000004064558
B

WORK FLOW
C

M
@ @ / / 2F A
KDH /

WT-5, "Preliminary Check" WT-32, "Self-Diagnosis (With CONSULT-III)" WT-35, "Symptom Table" N
WT-33, "Self-Diagnosis (Without CONSULT-
III)"

DETAILED FLOW O

1.CUSTOMER INFORMATION
Interview the customer to obtain detailed information about the symptom. P

>> GO TO 2
2.PRELIMINARY CHECK
Perform preliminary check. Refer to WT-5, "Preliminary Check".

Revision: October 2008 WT-3 2009 Xterra
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
>> GO TO 3
3.SELF-DIAGNOSIS
Perform SELF-DIAGNOSIS. Refer to WT-32, "Self-Diagnosis (With CONSULT-III)" or WT-33, "Self-Diagnosis
(Without CONSULT-III)".

>> GO TO 4
4.SYMPTOM
Check for symptoms. Refer to WT-35, "Symptom Table".

>> GO TO 5
5.MALFUNCTIONING PARTS
Repair or replace the applicable parts.

>> GO TO 6
6.DRIVE TEST
1. Perform a drive test.
2. Check the low tire pressure warning lamp.

>> GO TO 7
7.SELF-DIAGNOSIS
Perform SELF-DIAGNOSIS. Refer to WT-32, "Self-Diagnosis (With CONSULT-III)" or WT-33, "Self-Diagnosis
(Without CONSULT-III)".
Are any DTC's displayed?
YES >> GO TO 5
NO >> Inspection End.

Revision: October 2008 WT-4 2009 Xterra
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
A
Preliminary Check INFOID:0000000004064559

1.TIRE PRESSURE B
Check all tire pressures. Refer to WT-50, "Tire".
Do tire pressures match specification?
C
YES >> GO TO 2.
NO >> Adjust tire pressures to specified value.
2.LOW TIRE PRESSURE WARNING LAMP D
Check low tire pressure warning lamp activation.
Does the low tire pressure warning lamp activate for one second when ignition switch is turned ON?
YES >> GO TO 3. WT
NO >> GO TO WT-36, "Low Tire Pressure Warning Lamp Does Not Come On When Ignition Switch Is
Turned On".
3.BCM CONNECTOR F
1. Disconnect BCM harness connectors.
2. Check terminals for damage or loose connections.
3. Reconnect harness connectors. G
Are BCM connectors damaged or loose?
YES >> Repair or replace damaged parts.
NO >> GO TO 4. H
4.TRANSMITTER ACTIVATION TOOL
Check battery in transmitter activation tool. I
Is transmitter activation tool battery fully charged?
YES >> Perform self-diagnosis. Refer to WT-32, "Self-Diagnosis (With CONSULT-III)" or WT-33, "Self-
Diagnosis (Without CONSULT-III)". J
NO >> Replace battery in transmitter activation tool.
Transmitter Wake Up Operation INFOID:0000000004064560

K
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided asleep and must first be woken up using Transmitter Acti- L
vation Tool J-45295 before ID registration can be performed.
1. Turn ignition switch ON. Push the transmitter activation tool
against the tire near the front left transmitter. Press the button for
5 seconds. The hazard warning lamps flash per the following M
diagram.

Tool number : (J-45295) N

KDH / / 25D
@

2. Repeat this procedure for each tire in the following order: FL, FR, RR, RL. P

Revision: October 2008 WT-5 2009 Xterra
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
3. When the BCM finishes assigning each tire ID, the BCM flashes the hazard warning lamps and sends
flashing indicator status by CAN according to the following time chart.

V DH / 066D
@

4. After completing wake up of all transmitters, make sure low tire pressure warning lamp goes out.
ID Registration Procedure INFOID:0000000004064561

ID REGISTRATION WITH TRANSMITTER ACTIVATION TOOL
NOTE:
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided asleep and must first be woken up using Transmitter Acti-
vation Tool J-45295 before ID registration can be performed.
1. Connect CONSULT-III.
2. Select ID REGIST under BCM.
3. Push the transmitter activation tool against the tire near the front
left transmitter. Press the button for 5 seconds.

Tool number : (J-45295)

KDH / / 25D
@

4. Register the IDs in order from FR LH, FR RH, RR RH and RR LH. When ID registration of each wheel has
been completed, the hazard warning lamps flash.

Step Activation tire position Hazard warning lamp CONSULT-III
1 Front LH
2 Front RH YET
2 times flashing
3 Rear RH DONE
4 Rear LH
5. After completing all ID registrations, press END to complete the procedure.
NOTE:
Be sure to register all of the IDs in order from FR LH, FR RH, RR RH, to RR LH, or the self-diagnostic results
display will not function properly.
ID REGISTRATION WITHOUT TRANSMITTER ACTIVATION TOOL
NOTE:
Revision: October 2008 WT-6 2009 Xterra
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
This procedure must be done after replacement of a low tire pressure warning transmitter or BCM.
New replacement transmitters are provided asleep and must first be woken up using Transmitter Acti- A
vation Tool J-45295 before ID registration can be performed.
1. Connect CONSULT-III.
2. Select ID REGIST under BCM. B
3. Adjust the tire pressures to the values shown in the table and drive the vehicle at 40 km/h (25 MPH) or
more for a few minutes.
C
Tire position Tire pressure kPa (kg/cm2, psi)
Front LH 250 (2.5, 36)
Front RH 230 (2.3, 33)
D

Rear RH 210 (2.1, 30)
Rear LH 190 (1.9, 27) WT
4. After completing all ID registrations, press END to complete the procedure.

Activation tire position CONSULT-III F
Front LH
Front RH YET
G
Rear RH DONE
Rear LH
5. Inflate all tires to proper pressure. Refer to WT-50, "Tire". H

Revision: October 2008 WT-7 2009 Xterra
TPMS
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS
TPMS
System Diagram INFOID:0000000004064562

@ @ / / 3F A
KDH /

System Description INFOID:0000000004064563

BODY CONTROL MODULE (BCM)
The BCM (1) is shown with the lower instrument panel LH removed.
The BCM reads the air pressure signal received by the remote key-
less entry receiver, and controls the low tire pressure warning lamp
as shown below. It also has a self-diagnosis function to detect a sys-
tem malfunction.

Condition Low tire pressure warning lamp
System normal On for 1 second after ignition ON

Tire less than 193 kPa (2.0 kg/cm2 , 28 psi) ON
[Flat tire] @ DH / / 0/ YY
V @

Low tire pressure warning system malfunc- After key ON, flashes once per sec-
tion ond for 1 minute, then stays ON

TRANSMITTER
A sensor-transmitter integrated with a valve is installed in each
wheel, and transmits a detected air pressure signal in the form of a
radio wave. The radio signal is received by the remote keyless entry
receiver.

V DH / 026D
@

REMOTE KEYLESS ENTRY RECEIVER

Revision: October 2008 WT-8 2009 Xterra
TPMS
< FUNCTION DIAGNOSIS >
The remote keyless entry receiver is shown with the instrument
panel RH removed. The remote keyless entry receiver receives the A
air pressure signal transmitted by the transmitter in each wheel.

KDH / / 58D
@

D
COMBINATION METER
The combination meter receives tire pressure status from the BCM
using CAN communication. When a low tire pressure condition is
sensed by the BCM, the combination meter low tire pressure warn- WT
ing lamp is activated.

KDH / / 44D
@

TIRE PRESSURE WARNING CHECK CONNECTOR H
The tire pressure warning check connector can be grounded in order
to initiate self-diagnosis without a CONSULT-III. Refer to WT-33,
"Self-Diagnosis (Without CONSULT-III)". The tire pressure warning
I
check connector (1) is located behind the lower portion of the instru-
ment panel LH.

K
@ DH / 01/ YY
V @

Revision: October 2008 WT-9 2009 Xterra
TPMS
< FUNCTION DIAGNOSIS >
System Component INFOID:0000000004064564

V DH / 024D
@

1. BCM M18, M20 2. Combination meter M24 3. Tire pressure warning check connector
M123
4. Remote keyless entry receiver M120 5. Transmitters

Revision: October 2008 WT-10 2009 Xterra
DIAGNOSIS SYSTEM (BCM)
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
A
CONSULT-III Function (BCM) INFOID:0000000004064565

CONSULT-III DIAGNOSTIC MODES B
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

Diagnostic mode Description C
Supports inspections and adjustments. Commands are transmitted to the BCM
Work Support for setting the status suitable for required operation, input/output signals are re-
ceived from the BCM and received data is displayed. D
Data Monitor Displays BCM input/output data in real time.
Active Test Operation of electrical loads can be checked by sending drive signal to them.
Self-Diagnostic Result Displays BCM self-diagnosis results.
WT

CAN Diagnostic Support Monitor The result of transmit/receive diagnosis of CAN communication can be read.
ECU Identification BCM part number can be read.
F
Configuration Performs BCM configuration read/write functions.

DESCRIPTION
G
During driving, the tire pressure monitoring system receives the signal transmitted from the transmitter
installed in each wheel, and turns on the low tire pressure warning lamp when the tire pressure becomes low.
The control unit (BCM) for this system has pressure judgement and self-diagnosis functions.
H
FUNCTION
When the tire pressure monitoring system detects low inflation pressure or an internal malfunction, the low tire
pressure warning lamp in the combination meter comes on. The malfunction is indicated by the low tire pres-
sure warning lamp flashing. I

CONSULT-III Application to Tire Pressure Monitoring System
J
ITEM SELF-DIAGNOSTIC RESULTS DATA MONITOR
Front - Left transmitter

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