Nissan Altima L32. Manual - part 140

BCS-94

< SYMPTOM DIAGNOSIS >

[BCM]

COMBINATION SWITCH SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

COMBINATION SWITCH SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000004202286

1. Perform the data monitor of CONSULT-III to check for any malfunctioning item.
2. Check the malfunction combinations.

Malfunction item: 

×

3. Identify the malfunctioning part from the agreed combination and repair or replace the part.

Malfunction combi-

nation

Data monitor item

FR WI

PER HI

FR WIP

E

R LOW

F

R

 W

A

SH

ER

 S

W

FR WI

PER INT

INT VOL

U

ME

TURN SIG

N

AL R

TURN SIGNAL L

TA

IL

 LA

MP 

SW

H

I BEAM SW

HEAD LAMP SW 

1

HEAD LAMP SW 

2

P

ASSI

N

G

 SW

AU

T

O

 LI

GH

T

 S

W

FR F

O

G 

SW

A

×

×

×

×

B

×

×

×

×

C

×

×

×

D

×

×

×

E

×

×

F

×

×

G

×

×

H

×

×

×

I

×

×

×

×

J

×

×

×

×

K

All  Items

L

If only one item is detected or the item is not applicable to the combinations A to K 

Malfunction 

combination

Malfunctioning part

Repair or replace

A

Combination switch INPUT 1 circuit

Inspect the combination switch input circuit applicable to the malfunctioning 
part. Refer to 

BCS-43, "Diagnosis Procedure"

.

B

Combination switch INPUT 2 circuit

C

Combination switch INPUT 3 circuit

D

Combination switch INPUT 4 circuit

E

Combination switch INPUT 5 circuit

F

Combination switch OUTPUT 1 circuit

Inspect the combination switch output circuit applicable to the malfunction-
ing part. Refer to 

BCS-45, "Diagnosis Procedure"

.

G

Combination switch OUTPUT 2 circuit

H

Combination switch OUTPUT 3 circuit

I

Combination switch OUTPUT 4 circuit

J

Combination switch OUTPUT 5 circuit

K

BCM

Replace BCM. Refer to 

BCS-96, "Removal and Installation"

.

L

Combination switch

Replace the combination switch. Refer to 

WW-121, "Removal and Installa-

tion"

.

BCS

PRECAUTIONS

BCS-95

< PRECAUTION >

[BCM]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

PRECAUTION

PRECAUTIONS

Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER"

INFOID:0000000004501274

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 SR 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 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 SR 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 har-

ness connectors.

Necessary for Steering Wheel Rotation After Battery Disconnect

INFOID:0000000004501277

NOTE:

• Before removing and installing any control units, first turn the push-button ignition switch to the LOCK posi-

tion, then disconnect both battery cables.

• After finishing work, confirm that all control unit connectors are connected properly, then re-connect both

battery cables.

• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.

If a DTC is detected, perform trouble diagnosis according to self-diagnosis results.

This vehicle is equipped with a push-button ignition switch and a steering lock unit.

If the battery is disconnected or discharged, the steering wheel will lock and cannot be turned.

If turning the steering wheel is required with the battery disconnected or discharged, follow the procedure

below before starting the repair operation.

OPERATION PROCEDURE

1. Connect both battery cables.

NOTE:

Supply power using jumper cables if battery is discharged.

2. Carry the Intelligent Key or insert it to the key slot and turn the push-button ignition switch to ACC position.

(At this time, the steering lock will be released.)

3. Disconnect both battery cables. The steering lock will remain released with both battery cables discon-

nected and the steering wheel can be turned.

4. Perform the necessary repair operation.
5. When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn

the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering

wheel will lock when the push-button ignition switch is turned to LOCK position.)

6. Perform self-diagnosis check of all control units using CONSULT-III.

BCS-96

< ON-VEHICLE REPAIR >

[BCM]

BCM (BODY CONTROL MODULE)

ON-VEHICLE REPAIR

BCM (BODY CONTROL MODULE)

Removal and Installation

INFOID:0000000004202287

REMOVAL

CAUTION:

Before replacing BCM, perform "READ CONFIGURATION" to save or print current vehicle specifica-

tion. Refer to 

BCS-5, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description"

.

1. Remove the combination meter. Refer to 

MWI-176, "Removal and Installation"

.

2. Remove the BCM screws (A), and pull out the BCM (1).
3. Disconnect the BCM connector and remove the BCM (1).

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• When replacing BCM, perform "WRITE CONFIGURATION". Refer to 

BCS-6, "CONFIGURATION (BCM)

: Description"

.

• When replacing BCM, perform the system initialization (NATS). Refer to the CONSULT-III operation

manual for the initialization procedure. 

• When replacing BCM, if new BCM does not come with keyfobs attached, all existing keyfobs must be

re-registered. Refer to the CONSULT-III operation manual for the initialization procedure.

ALMIA0032ZZ

BR-1

BRAKES

C

D

E

G

H

I

J

K

L

M

SECTION 

BR

A

B

BR

N

O

P

CONTENTS

BRAKE SYSTEM

PRECAUTION ...............................................

3

PRECAUTIONS ...................................................

3

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

3

Precaution for Procedure without Cowl Top Cover 

......

3

Precaution for Brake System  ....................................

3

Necessary for Steering Wheel Rotation After Bat-
tery Disconnect  .........................................................

4

PREPARATION ............................................

5

PREPARATION ...................................................

5

Special Service Tool  .................................................

5

Commercial Service Tool  ..........................................

5

FUNCTION DIAGNOSIS ...............................

6

NOISE, VIBRATION AND HARSHNESS 
(NVH) TROUBLESHOOTING  .............................

6

NVH Troubleshooting Chart  ......................................

6

BASIC INSPECTION  ....................................

7

FRONT DISC BRAKE .........................................

7

BRAKE PAD ................................................................

7

BRAKE PAD : Inspection  ..........................................

7

DISC ROTOR ...............................................................

7

DISC ROTOR : Inspection  ........................................

7

REAR DISC BRAKE ...........................................

8

BRAKE PAD ................................................................

8

BRAKE PAD : Inspection  ..........................................

8

DISC ROTOR ...............................................................

8

DISC ROTOR : Inspection  ........................................

8

BRAKE BOOSTER  .............................................

9

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

9

BRAKE MASTER CYLINDER  ..........................

10

On Board Inspection ................................................

10

BRAKE TUBE AND HOSE  ...............................

11

Hydraulic Circuit  ......................................................

11

FRONT BRAKE  .........................................................

11

FRONT BRAKE : Inspection ....................................

11

REAR BRAKE ............................................................

12

REAR BRAKE : Inspection  ......................................

12

ON-VEHICLE MAINTENANCE ....................

13

BRAKE PEDAL .................................................

13

Inspection and Adjustment  ......................................

13

BRAKE FLUID  ..................................................

15

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

15

Drain and Refill  ........................................................

15

Bleeding Brake System  ...........................................

16

ON-VEHICLE REPAIR .................................

17

BRAKE PEDAL .................................................

17

Exploded View .........................................................

17

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

17

BRAKE TUBE AND HOSE  ...............................

18

Hydraulic Circuit  ......................................................

18

FRONT BRAKE  .........................................................

18

FRONT BRAKE : Removal and Installation .............

18

REAR BRAKE ............................................................

20

REAR BRAKE : Removal and Installation  ...............

20

BRAKE MASTER CYLINDER  ..........................

22

Exploded View .........................................................

22

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

22

BRAKE BOOSTER  ...........................................

24

Exploded View .........................................................

24

Removal and installation  .........................................

24