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SUSPENSION

SECTION
ROAD WHEELS & TIRES
WT B

WT
CONTENTS
BASIC INSPECTION ................................... 3
. BCM (BODY CONTROL MODULE) ................. 18 F
Terminals and Reference Values (BCM) ................18 .
DIAGNOSIS AND REPAIR WORKFLOW ......... 3
. Wiring Diagram -- Coupe .......................................18 .
Repair Work Flow ..................................................... 3
. Wiring Diagram -- Sedan .......................................21 . G
Self-Diagnosis ........................................................23
.
INSPECTION AND ADJUSTMENT .................... 5
. Flash Code Chart ...................................................24
.
Preliminary Check .................................................... 5
.
Transmitter Wake Up Operation .............................. 5 . SYMPTOM DIAGNOSIS ............................. 26
. H
ID Registration Procedure ........................................ 6
.
TPMS ................................................................. 26
FUNCTION DIAGNOSIS .............................. 8
. Symptom Table ......................................................26
. I
TPMS .................................................................. 8
. LOW TIRE PRESSURE WARNING LAMP
System Diagram ....................................................... 8
. DOES NOT TURN ON ....................................... 27
System Description .................................................. 8
. Low Tire Pressure Warning Lamp Does Not Come J
System Components ................................................ 9
. On When Ignition Switch Is Turned On ..................27
.
DIAGNOSIS SYSTEM (BCM) ...........................11
. LOW TIRE PRESSURE WARNING LAMP K
CONSULT-III Function (BCM) ................................ 11 . STAYS ON ........................................................ 28
Self-Diagnosis ........................................................ 11
. Low Tire Pressure Warning Lamp Stays On When
Ignition Switch Is Turned On ..................................28
.
COMPONENT DIAGNOSIS ........................ 13
. L
LOW TIRE PRESSURE WARNING LAMP
C1708 - C1711 DATA FROM TRANSMITTER
BLINKS ............................................................. 29
NOT BEING RECEIVED ....................................13
. M
Low Tire Pressure Warning Lamp Flashes When
Data from Transmitter Not Being Received ........... 13
.
Ignition Switch Is Turned On ..................................29
.
C1712 - C1715, C1720 - C1723, C1724 -
HAZARD WARNING LAMPS FLASH .............. 30
C1727 TRANSMITTER MALFUNCTION ..........14
. N
Hazard Warning Lamps Flash When Ignition
Transmitter Malfunction .......................................... 14
.
Switch Is Turned On ...............................................30
.
C1716 - C1719 TRANSMITTER PRESSURE ID REGISTRATION CANNOT BE COMPLET- O
MALFUNCTION .................................................15
. ED ...................................................................... 31
Transmitter Pressure Malfunction .......................... 15
. ID Registration Cannot Be Completed ...................31
.
C1729 VEHICLE SPEED SIGNAL ....................16
. NOISE, VIBRATION AND HARSHNESS P
Vehicle Speed Signal ............................................. 16
.
(NVH) TROUBLESHOOTING ........................... 32
C1734 CONTROL UNIT ....................................17
. NVH Troubleshooting Chart ...................................32
.
Control Unit ............................................................ 17
.
PRECAUTION ............................................. 33
.
ECU DIAGNOSIS ........................................ 18
.
PRECAUTIONS ................................................. 33

Revision: July 2007 WT-1 2008 Altima
Supplemental Restraint System (SRS) AIR BA Removal and Installation ........................................ 36
.
G and SEAT BELT PRE-TENSIONER ............... 33 .
Precaution for work ................................................ 33
. ROAD WHEEL TIRE ASSEMBLY ................... 37
.
Adjustment ............................................................. 37
.
PREPARATION .......................................... 34
.
REMOVAL AND INSTALLATION .............. 39
PREPARATION ................................................ 34
.
Special Service Tool .............................................. 34
. TRANSMITTER ................................................ 39
.
Commercial Service Tools ..................................... 34
. Removal and Installation ........................................ 39
.

ON-VEHICLE MAINTENANCE .................. 35
. SERVICE DATA AND SPECIFICATIONS
(SDS) .......................................................... 41
ROAD WHEEL .................................................. 35
.
Inspection .............................................................. 35
. SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................ 41
.
ON-VEHICLE REPAIR ............................... 36
. Road Wheel ........................................................... 41 .
Tire ......................................................................... 41
.
TIRE PRESSURE RECEIVER .......................... 36
.

Revision: July 2007 WT-2 2008 Altima
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
BASIC INSPECTION A
DIAGNOSIS AND REPAIR WORKFLOW
Repair Work Flow INFOID:0000000001342568
B

WORK FLOW
C

M
ALEIA0003GB

WT-5, "Preliminary Check" WT-11, "Self-Diagnosis" WT-26, "Symptom Table" N
DETAILED FLOW

1.CUSTOMER INFORMATION O

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"

>> GO TO 3

Revision: July 2007 WT-3 2008 Altima
DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION >
3.SELF-DIAGNOSIS
Perform SELF-DIAGNOSIS. Refer to WT-11, "Self-Diagnosis" (with CONSULT-III) or WT-24, "Flash Code
Chart" (without CONSULT-III).

>> GO TO 4
4.SYMPTOM
Check for symptoms. Refer to WT-26, "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-11, "Self-Diagnosis" (with CONSULT-III) or WT-24, "Flash Code
Chart" (without CONSULT-III).
Are any DTC's displayed?
YES >> GO TO 5
NO >> INSPECTION END

Revision: July 2007 WT-4 2008 Altima
INSPECTION AND ADJUSTMENT
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
A
Preliminary Check INFOID:0000000001342569

1.TIRE PRESSURE B
Check all tire pressures. Refer to WT-41, "Tire".
OK or NG
C
OK >> GO TO 2
NG >> Adjust tire pressure 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-27, "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 connection.
3. Reconnect harness connector. G
OK or NG
OK >> GO TO 4
NG >> Repair or replace damaged parts. H
4.TRANSMITTER ACTIVATION TOOL
Check battery in transmitter activation tool. I
OK or NG
OK >> Perform SELF-DIAGNOSIS. Refer to WT-23, "Self-Diagnosis".
NG >> Replace battery in transmitter activation tool. J
Transmitter Wake Up Operation INFOID:0000000001342570

NOTE: K
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
Activation Tool J-45295 before ID registration can be performed. L
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
diagram. M

Tool number : (J-45295)
N

O
LEIA0036E

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

Revision: July 2007 WT-5 2008 Altima
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.

WEIA0177E

4. After completing wake up of all transmitters, make sure low tire pressure warning lamp goes out.
ID Registration Procedure INFOID:0000000001342571

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
Activation 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)

LEIA0036E

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: July 2007 WT-6 2008 Altima
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 A
Activation 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-41, "Tire". H

Revision: July 2007 WT-7 2008 Altima
TPMS
< FUNCTION DIAGNOSIS >
FUNCTION DIAGNOSIS
TPMS
System Diagram INFOID:0000000001342572

ALEIA0004GB

System Description INFOID:0000000001342573

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

Condition Low tire pressure warning lamp
System normal On for 1 second after ignition ON
Tire pressure less than 174.1 kPa (1.775
ON
kg/cm2, 25.25 psi)
Tire pressure monitoring system malfunc- After key ON, flashes once per sec- ALEIA0005ZZ

tion ond for 1 minute, then stays ON

TRANSMITTER
A sensor-transmitter integrated with a valve is installed in each
wheel. It transmits a detected air pressure signal in the form of a
radio wave when the vehicle is moving. The radio signal is received
by the tire pressure receiver.

WEIA0137E

TIRE PRESSURE RECEIVER

Revision: July 2007 WT-8 2008 Altima
TPMS
< FUNCTION DIAGNOSIS >
The tire pressure receiver (1) is located next to the steering column
assembly (2) and is shown with the lower instrument panel LH A
removed. The tire pressure receiver receives the air pressure signal
transmitted by the transmitter in each wheel.
B

ALEIA0011ZZ

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 low tire pressure warning lamp is activated. WT

LEIA0055E

TIRE PRESSURE WARNING CHECK CONNECTOR H
The tire pressure warning check connector can be grounded in order to initiate self-diagnosis without a CON-
SULT-III. The tire pressure warning check connector is located behind the lower portion of the instrument
panel LH. Refer to PG-98, "Harness Layout".
I
System Components INFOID:0000000001342574

ALEIA0007ZZ

Revision: July 2007 WT-9 2008 Altima
TPMS
< FUNCTION DIAGNOSIS >
1. Tire pressure receiver 2. Tire pressure warning check connec- 3. Transmitters
M70 tor
M62
4. Combination meter 5. BCM
M24 M16, M17, M18, M19

Revision: July 2007 WT-10 2008 Altima
DIAGNOSIS SYSTEM (BCM)
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
A
CONSULT-III Function (BCM) INFOID:0000000001342575

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

Diagnostic mode Description
Supports inspections and adjustments. Commands are transmitted to the BCM C
WORK SUPPORT for setting the status suitable for required operation, input/output signals are re-
ceived from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time. D
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read. WT
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
F
Self-Diagnosis INFOID:0000000001342576

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- I
sure warning lamp flashing.
CONSULT-III Application to Tire Pressure Monitoring System
J
ITEM SELF-DIAGNOSTIC RESULTS DATA MONITOR
Front - Left transmitter

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