Nissan Murano Z50 (2003 year). Manual - part 51

 

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Nissan Murano Z50 (2003 year). Manual - part 51

 

 

TROUBLE DIAGNOSIS

BRC-37

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Revision; 2004 April

2003 Murano

TFWA0062E

BRC-38

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

TFWA0063E

TROUBLE DIAGNOSIS

BRC-39

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Revision; 2004 April

2003 Murano

TFWA0064E

BRC-40

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Control Unit Input/Output Signal Standard

AFS0018R

REFERENCE VALUE FROM CONSULT-II

CAUTION:

The display shows control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short - circuited.

Note 1: Confirm tire pressure is normal.

Monitor item

Display content

Data monitor

Note: Error inspection 

checklist

Condition

Reference value in 

normal operation

FR RH SENSOR
FR LH SENSOR
RR RH SENSOR
RR LH SENSOR 

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

BRC-51, "Inspection 1 
Wheel Sensor System"

Vehicle running (Note 1)

Almost in accor-
dance with speed-
ometer display 
(within 

±

10 %)

BATTERY VOLT

Battery voltage sup-
plied to ABS actuator 
and electric unit (con-
trol unit)

Ignition switch ON

10 - 16 V

BRC-57, "Inspection 6 
ABS Actuator and Elec-
tric Unit (Control Unit) 
Power Supply and 
Ground Circuit"

STOP LAMP SW

Brake pedal operation

Brake pedal depressed

ON

Brake pedal not depressed

OFF

ABS WARN LAMP

ABS warning lamp ON 
condition (Note 2)

ABS warning lamp ON

ON

ABS warning lamp OFF

OFF

MOTOR RELAY

Operation status of 
motor and motor relay

Ignition switch ON or engine 
running (ABS not operated)

OFF

BRC-56, "Inspection 5 
Actuator Motor, Motor 
Relay, and Circuit"

Ignition switch ON or engine 
running (ABS operated)

ON

ACTUATOR RLY

Actuator relay opera-
tion status

Vehicle stopped (Ignition 
switch ON)

OFF

BRC-56, "Inspection 5 
Actuator Motor, Motor 
Relay, and Circuit"

Vehicle stopped (Engine run-
ning)

ON

FR LH IN SOL
FR LH OUT SOL
FR RH IN SOL
FR RH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL

Solenoid valve opera-
tion

Actuator (solenoid) is active 
(“ACTIVE TEST” with CON-
SULT-II) or actuator relay is 
inactive (in fail-safe mode).

ON

BRC-55, "Inspection 3 
Solenoid Valve System"

When actuator (solenoid) is 
not active and actuator relay is 
active (ignition switch ON).

OFF

ABS FAIL SIG
EBD FAIL SIG

Fail signal status

ABS fail
EBD fail

ON

ABS system
EBD system

EBD normal
ABS normal

OFF

DECEL G-SEN

Longitudinal accelera-
tion detected by Decel 
G-Sensor

Vehicle stopped

Approx. 0G

BRC-59, "Inspection 7 G 
Sensor System"

Vehicle running

-1.7 - +1.7G

EBD WARN LAMP

Brake warning lamp on 
condition (Note 3)

Brake warning lamp ON

ON

Brake warning lamp OFF

OFF

EBD SIGNAL

EBD operation

EBD active

ON

EBD not active

OFF

ABS SIGNAL

ABS operation

ABS active

ON

ABS not active

OFF

CRANKING SIG

CRANKING status

Cranking

ON

Not cranking

OFF

TROUBLE DIAGNOSIS

BRC-41

[ABS]

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BRC

Revision; 2004 April

2003 Murano

Note 2: ON/OFF timing of ABS warning lamp
ON: For approximately 2 seconds after ignition switch is turned ON, or when a malfunction is detected.
OFF: Approximately 2 seconds after ignition switch is turned ON (when system is in normal operation).
Note3: Serves as EBD warning lamp.

CONSULT- II Functions

AFS0018S

CONSULT-II MAIN FUNCTION 

In a diagnosis function (main function), there are “SELF-DIAGNOSTIC RESULTS”, “DATA MONITOR”, “CAN
DIAG SUPPORT MNTR”, “ACTIVE TEST”, “FUNCTION TEST”, “ECU PART NUMBER”.

CONSULT-II BASIC OPERATION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II
CONVERTER, malfunctions might be detected in self-diag-
nosis depending on control unit which carry out CAN com-
munication.

3.

Turn ignition switch ON.

4.

Touch “START (NISSAN BASED VHCL)”.

5.

Touch “ABS” in “SELECT SYSTEM” screen.

Diagnostic 

test mode

Function

Reference

SELF-DIAG-
NOSTIC 
RESULTS

Self-diagnostic results can be read and erased quickly.

BRC-43, "SELF-DIAGNOSIS"

DATA MONI-
TOR

Input/Output data in the ABS actuator and electric unit (control unit) can be read.

BRC-45, "DATA MONITOR"

CAN DIAG 
SUPPORT 
MNTR

The results of transmit/receive diagnosis of communication can be read.

ACTIVE TEST

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the 
ABS actuator and electric unit (control unit) and also shifts some parameters in a 
specified range.

BRC-47, "ACTIVE TEST"

FUNCTION 
TEST

Conducted by CONSULT-II instead of a technician to determine whether each sys-
tem is “OK” or “NG”.

ECU PART 
NUMBER

ABS actuator and electric unit (control unit) part number can be read.

PBIB1300E

SKIA3098E

BRC-42

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

If “ABS” is not indicated, go to 

GI-38, "CONSULT-II Data Link

Connector (DLC) Circuit"

 .

6.

Select required diagnostic location from “SELECT DIAG MODE”
screen.

PKIA2102E

SFIA2435E

TROUBLE DIAGNOSIS

BRC-43

[ABS]

C

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BRC

Revision; 2004 April

2003 Murano

SELF-DIAGNOSIS
Description

If an error is detected in system, ABS warning lamp on combination meter turn on. In this case, perform self-
diagnosis as follows.

Operation Procedure

1.

Turn ignition switch OFF.

2.

Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.

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 performs CAN communication.

3.

Turn ignition switch ON.

4.

Start engine and drive at approximately 30 km/h (19 MPH) for approximately 1 minute.

5.

After stopping vehicle, with engine running at idle speed, touch “START (NISSAN BASED VHCL)”, “ABS”,
“SELF-DIAG RESULTS” in order on CONSULT-II screen.
If “ABS” is not indicated, go to 

GI-38, "CONSULT-II Data Link Connector (DLC) Circuit"

 .

CAUTION:

If there is no error during CONSULT-II use, ABS warning lamp may be turned ON/OFF. 

If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
ignition switch, “ABS” might not be displayed in System Selection screen. In this case, repeat
operation from step 1. If it connect be shown after several attempts, ABS actuator and electric
unit (control unit) may have malfunction. Repair or replace control unit.

6.

The self-diagnostic results are displayed. (If necessary, self-diagnostic results can be printed out by touch-
ing “PRINT”.)

When “NO FAILURE” is displayed, check ABS warning lamp.

7.

Conduct appropriate inspection from the display item list, and repair or replace malfunctioning component.

8.

Start engine and drive at approximately 30 km/h (19 MPH) for approximately 1 minute.

CAUTION:

When a wheel sensor “short-circuit” is detected, if vehicle is not driven at 30 km/h (19 MPH)
for at least 1 minute, ABS warning lamp will not turn off even if everything is normal.

Check again to make sure that there is no malfunction on other parts.

9.

Turn ignition switch OFF to prepare for erasing the memory.

10. Start engine and touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG RESULTS”, “ERASE

MEMORY” in order on CONSULT-II screen to erase the error memory.

CAUTION:

If the error memory is not erased, re-conduct the operation from step 5 again.

11. For final inspection, drive at approximately 30 km/h (19 MPH) for approximately 1 minute and confirm that

ABS warning lamp turn OFF.

BRC-44

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Display Item List

Self-diagnostic item

Malfunction detecting condition

Check system

FR LH SENSOR-1
[C1104]

Circuit of front LH wheel sensor is open, or shorted or sensor 
power voltage is unusual.

BRC-51, "Inspection 1 
Wheel Sensor System"

 

(Note 1)

RR RH SENSOR-1
[C1101]

Circuit of rear RH wheel sensor is open, or shorted or sensor 
power voltage is unusual.

FR RH SENSOR-1
[C1103]

Circuit of front RH wheel sensor is open, or shorted or sensor 
power voltage is unusual.

 RR LH SENSOR-1
[C1102]

Circuit of rear LH wheel sensor is open, or shorted or sensor 
power voltage is unusual.

FR LH SENSOR-2
[C1108]

 ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.

RR RH SENSOR-2
[C1105]

 ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.

FR RH SENSOR-2
[C1107]

 ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.

RR LH SENSOR-2
[C1106]

 ABS actuator and electric unit (control unit) cannot identify sen-
sor pulses, because of large gap between wheel sensor and sen-
sor rotor.

FR LH IN ABS SOL
[C1120]

Circuit of front LH IN ABS solenoid is open or shorted, or control 
line is open or shorted to power supply or ground.

BRC-55, "Inspection 3 
Solenoid Valve System"

FR LH OUT ABS SOL
[C1121]

Circuit of front LH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.

RR RH IN ABS SOL
[C1126]

Circuit of rear RH IN ABS solenoid is open or shorted, or control 
line is open or shorted to power supply or ground.

RR RH OUT ABS SOL
[C1127]

Circuit of rear RH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.

FR RH IN ABS SOL
[C1122]

Circuit of front RH IN ABS solenoid is open or shorted, or control 
line is open or shorted to power supply or ground.

FR RH OUT ABS SOL
[C1123]

Circuit of front RH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.

RR LH IN ABS SOL
[C1124]

Circuit of rear LH IN ABS solenoid is open or shorted, or control 
line is open or shorted to power supply or ground.

RR LH OUT ABS SOL
[C1125]

Circuit of rear LH OUT ABS solenoid is open or shorted, or con-
trol line is open or shorted to power supply or ground.

PUMP MOTOR (Note 2)
[C1111]

During actuator motor operation with ON, when actuator motor 
turns OFF or when control line for actuator motor relay is open.

BRC-56, "Inspection 5 
Actuator Motor, Motor 
Relay, and Circuit"

During actuator motor operation with OFF, when actuator motor 
turns ON or when control line for relay is shorted to ground.

ABS SENSOR
[MALFUNCTION SIGNAL]
[C1115]

Wheel sensor input is malfunction.

BRC-51, "Inspection 1 
Wheel Sensor System"

 

(Note 1)

BATTERY VOLTAGE
[MALFUNCTION]
[C1109]

ABS actuator and electric unit (control unit) power voltage is too 
low.

BRC-57, "Inspection 6 
ABS Actuator and Elec-
tric Unit (Control Unit) 
Power Supply and 
Ground Circuit"

CONTROLLER FAILURE
[C1110]

Internal malfunction of ABS actuator and electric unit (control 
unit)

BRC-54, "Inspection 2 
ABS Actuator and Elec-
tric Unit (Control Unit)"

G - SENSOR
[C1113] (Only AWD model)

Decel G- sensor is malfunctioning, or signal line of Decel G- sen-
sor is open or shorted.

BRC-59, "Inspection 7 G 
Sensor System"

TROUBLE DIAGNOSIS

BRC-45

[ABS]

C

D

E

G

H

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J

K

L

M

A

B

BRC

Revision; 2004 April

2003 Murano

Note 1: After completing repairs of shorted sensor circuit, when ignition switch is turned ON, ABS warning
lamp turns on. Check that ABS warning lamp turns off while driving vehicle at approximately 30 km/h (19
MPH) for approximately 1 minute according to self-diagnosis procedure. In addition, if wheel sensor 2 is dis-
played for wheels, check wheel sensor circuit and also check control unit power voltage.
Note 2: When errors are detected in several systems, including CAN communication system [U1000], trouble-
shoot CAN communication system.

DATA MONITOR
Operation Procedure

1.

Touch “ABS”, “DATA MONITOR” in order on CONSULT-II screen.
If “ABS” is not indicated, go to 

GI-38, "CONSULT-II Data Link Connector (DLC) Circuit"

 .

CAUTION:

When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
ignition switch, “ABS” might not be displayed in system selection screen. In this case, repeat the
operation from step 2.

2.

Return to Monitor Item Selection screen, and touch “ECU INPUT SIGNALS”, “MAIN SIGNALS” or
“SELECTION FROM MENU”. Refer to following information.

3.

When “START” is touched, data monitor screen is displayed.

Display Item List

CAN COMM CIRCUIT
[U1000]

CAN communication line is open or shorted.

ABS actuator and electric unit (control unit) internal malfunc-
tion

Battery voltage for EMC is suddenly interrupted for approxi-
mately 0.5 seconds or more.

BRC-56, "Inspection 4 
CAN Communication 
Lines"

 (Note 2)

ACTUATOR RLY
[C1140]

Actuator solenoid valve relay is ON, even if control unit sends 
off signal.

Actuator solenoid valve relay is OFF, even if control unit sends 
on signal.

Self-diagnostic item

Malfunction detecting condition

Check system

Monitor item

monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

FR RH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by front 
RH wheel sensor signal is dis-
played.

FR LH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by front 
LH wheel sensor signal is dis-
played.

RR RH SENSOR
 (km/h, MPH) 

×

×

×

Wheel speed calculated by rear 
RH wheel sensor signal is dis-
played.

RR LH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by real LH 
sensor signal is displayed.

BATTERY VOLT
(V)

×

×

×

Voltage supplied to ABS actuator 
and electric unit (control unit) is 
displayed.

STOP LAMP SW
(ON/OFF)

×

×

×

Stop lamp switch (ON/OFF) status 
is displayed.

ABS WARN LAMP
(ON/OFF)

×

×

ABS warning lamp (ON/OFF) sta-
tus is displayed.

FR LH IN SOL
(ON/OFF)

×

×

Front LH IN ABS solenoid (ON/
OFF) status is displayed.

FR LH OUT SOL
(ON/OFF)

×

×

Front LH OUT ABS solenoid (ON/
OFF) status is displayed.

BRC-46

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

×

: Applicable

–: Not applicable

NOTE:
Serves as EBD warning lamp.

RR RH IN SOL
(ON/OFF)

×

×

Rear RH IN ABS solenoid (ON/
OFF) status is displayed.

RR RH OUT SOL
(ON/OFF)

×

×

Rear RH OUT ABS solenoid (ON/
OFF) status is displayed.

FR RH IN SOL
(ON/OFF)

×

×

Front RH IN ABS solenoid (ON/
OFF) status is displayed.

FR RH OUT SOL 
(ON/OFF)

×

×

Front RH OUT ABS solenoid (ON/
OFF) status is displayed.

RR LH IN SOL
(ON/OFF)

×

×

Rear LH IN ABS solenoid (ON/
OFF) status is displayed.

RR LH OUT SOL
(ON/OFF)

×

×

Rear LH OUT ABS solenoid (ON/
OFF) status is displayed.

MOTOR RELAY
(ON/OFF)

×

×

ABS motor relay signal (ON/OFF) 
status is displayed.

ACTUATOR RLY
(ON/OFF)

×

×

ABS actuator relay signal (ON/
OFF) status is displayed.

ABS FAIL SIG
(ON/OFF)

×

ABS fail signal (ON/OFF) status is 
displayed.

EBD FAIL SIG
(ON/OFF)

×

EBD fail signal (ON/OFF) status is 
displayed.

EBD SIGNAL
(ON/OFF)

×

EBD operation (ON/OFF) status is 
displayed.

ABS SIGNAL
(ON/OFF)

×

ABS operation (ON/OFF) status is 
displayed.

DECEL G SEN
(G) (Only AWD model)

×

×

×

Decel acceleration detected by 
Decel G-sensor is displayed.

EBD WARN LAMP
(ON/OFF)

×

Brake warning lamp (ON/OFF) 
status is displayed. (Note)

CRANKING SIG 
(ON/OFF)

×

Cranking condition (ON/OFF) sta-
tus is displayed.

Monitor item

monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

TROUBLE DIAGNOSIS

BRC-47

[ABS]

C

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G

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B

BRC

Revision; 2004 April

2003 Murano

ACTIVE TEST

CAUTION:

Do not perform active test while driving vehicle.

Make sure to completely bleed air from brake system.

Active test cannot be performed when ABS warning lamp is on.

ABS and Brake Warming lamps turn on during active test.

Operation Procedure

1.

Touch “ABS”.
If “ABS” is not indicated, go to 

GI-38, "CONSULT-II Data Link Connector (DLC) Circuit"

2.

Touch “ACTIVE TEST”.

3.

Test item selection screen is displayed.

4.

Touch necessary test item.

5.

With “SELECT TEST SIGNALS” display shown in reverse, touch “START”.

6.

“ACTIVE TEST” screen will be displayed, so conduct following test.

Test Item

Solenoid valve

CAUTION:

The example shown is for the front right wheel. The procedure for the other wheels is the same as
given below.

1.

For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN”.
Then    use screen monitor to check that solenoid valve operates
as shown in Solenoid Valve Operation Chart. Refer to “Solenoid
Valve Operation Chart”.

LBR379

SFIA0678E

BRC-48

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Solenoid Valve Operation Chart

*: ON for 1 to 2 seconds after the touch, and then OFF

NOTE:

When active test is performed while depressing pedal, pedal depression amount will change, but this is
normal.

Approximately 10 seconds after operation is begun, “TEST STOP” will be displayed.

To perform retest after “TEST STOP” is displayed, touch “BACK” and conduct the test from Step 6.

ABS Motor

Touch “ON”, “OFF” on display screen and make sure ABS motor
relay is operating as shown in table below.

NOTE:

When active test is performed while depressing pedal, pedal
depression amount will change, but this is normal.

Approximately 10 seconds after operation has begun, “TEST
STOP” will be displayed.

To perform a retest after “TEST STOP” is displayed, touch “BACK” and perform test from step 6. 

Operation

ABS solenoid valve

UP

KEEP

DOWN

FR RH IN SOL

OFF

ON

ON

FR RH OUT SOL

OFF

OFF

ON*

FR LH IN SOL

OFF

ON

ON

FR LH OUT SOL

OFF

OFF

ON*

RR RH IN SOL

OFF

ON

ON

RR RH OUT SOL

OFF

OFF

ON*

RR LH IN SOL

OFF

ON

ON

RR LH OUT SOL

OFF

OFF

ON*

Operation

ON

OFF

ABS motor relay

ON

OFF

ABS actuator relay

ON

ON

SFIA0593E

TROUBLE DIAGNOSIS

BRC-49

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Revision; 2004 April

2003 Murano

For Fast and Accurate Diagnosis

AFS0018T

PRECAUTIONS FOR DIAGNOSIS

Before performing trouble diagnosis, always read general information (GI) to confirm general precautions.
Refer to 

GI-4, "General Precautions"

 .

After completing service, always erase self-diagnosis results. Refer to 

BRC-41, "CONSULT- II Functions"

.

When inspection of continuity or voltage between units is performed, check connector terminals for dis-
connection, looseness, bends, or collapses. If any non-standard condition is detected, repair or replace
applicable part.

Intermittent errors may be caused by a poor connection in harness, connector, or terminal. Move har-
nesses, harness connectors, or terminals by hand to make sure all connections are solid and undamaged.

If a circuit tester is used for check, be careful not to forcibly extend any connector terminal.

ABS is a system that uses electronic control to perform brake control. Therefore, phenomena like those
shown in the following table may occur, but this is because system is working normally.

To use CONSULT-II to perform self-diagnosis of ABS actuator and electric unit (control unit), active tests,
or work support, first stop work, then connect CONSULT-II and select “ABS”.

When CONSULT-II issued, ABS warning lamp may be ON/OFF.

ON and OFF Timing for ABS Warning Lamp

×

: ON

 –: OFF

Symptom

Symptom description

Result

Motor operation noise

This is the noise of motor operating inside ABS actuator and electric unit 
(control unit). Slight noise may occur during ABS operation.

Normal

Just after the engine starts, the motor operating noise may be heard. 
This is a normal status of the system operation check.

System operation check 
noise

When the engine is started, you may barely be able to hear a slight 
thudding sound from the engine room, but this sound is made by the 
system operation check and is normal.

Normal

ABS operation (longer stop-
ping distance)

Stopping distance may be longer for vehicles with ABS when the vehicle 
drives on rough or snow-covered roads. Use lower speeds when driving 
on these kinds of roads.

Normal

Condition

ABS warning lamp

Remarks

Ignition switch OFF

For approximately “2” second after ignition switch 
is turned ON.

×

After approximately “2” second after ignition 
switch ON. (When system is normal)

Turns OFF 2 second after ignition SW is turned 
ON.

ABS error

×

When there is an ABS actuator and electric unit 
(control unit) error (power or ground malfunction)

BRC-50

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

Basic Inspection

AFS0018U

BASIC INSPECTION 1 BRAKE FLUID LEVEL, LEAKS, AND BRAKE PADS

1.

Check fluid level in the brake reservoir tank. If fluid level is low, refill brake fluid.

2.

Check brake piping and around ABS actuator and electric unit (control unit) for leaks. If leakage or seep-
age is found, check the following items.

If ABS actuator and electric unit (control unit) connection is loose, tighten piping to the specified torque
and re-conduct the leak inspection to make sure there are no leakage.

 If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw,
replace the damaged part and re-conduct the leak inspection to make sure there are no leakage.

If there is leakage or seepage at any location other than ABS actuator and electric unit (control unit)
connection, wipe away leakage or seepage with clean cloth. Then inspect again and confirm than there
is on leakage.

if there is leakage from ABS actuator and electric unit (control unit), wipe away leakage or seepage with
clean cloth. Then inspect again. If there is leakage or seepage, replace ABS actuator and electric unit
(control unit).

CAUTION:

ABS actuator and electric unit (control unit) body cannot be disassembled.

3.

Check the brake disc rotor and pads. Refer to 

BR-28, "Removal and Installation of Brake Pad"

  in “Front

Disc Brake” and 

BR-34, "Removal and Installation of Brake Pad"

  in “Rear Disc Brake”.

BASIC INSPECTION 2 POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION

Make sure battery positive cable, negative cable and ground connection are not loose.  If looseness is
detected, tighten the piping to the specified torquer. In addition, check the battery voltage to make sure it has
not dropped and alternator is normal.

BASIC INSPECTION 3 ABS WARNING LAMP INSPECTION

1.

Check that ABS warning lamp turned on approximately 2 second when ignition switch is turned ON.
Check CAN communications. Refer to 

BRC-56, "Inspection 4 CAN Communication Lines"

 . If there are no

errors with CAN communication system, check ABS warning lamp and combination meter. Refer to 

DI-4,

"COMBINATION METERS"

 .

2.

Check that ABS warning lamp turned OFF approximately 2 second after ignition switch is turned on. If
ABS warning lamp does not turn OFF, perform self-diagnosis.

3.

Check that ABS warning lamp turns OFF 2 seconds after engine is started. If ABS warning lamp has not
turned OFF 10 seconds after engine has been started, perform self-diagnosis of ABS actuator and electric
unit (control unit).

4.

After performing self-diagnosis, be sure to erase the error memory. Refer to 

BRC-41, "CONSULT- II Func-

tions"

 .

TROUBLE DIAGNOSIS

BRC-51

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Revision; 2004 April

2003 Murano

Inspection 1 Wheel Sensor System

AFS001ZE

After using CONSULT-II SELF-DIAG RESULTS to determine position of malfunctioning wheel sensor, check
all areas to determine the component to be replaced.

CAUTION:

Do not measure resistance value and also voltage between sensor terminal with tester etc.,
because sensor is an active sensor.

Do not expand terminal of connector with a tester terminal stick, when it does inspection with
tester.

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSIS RESULT

Check self-diagnosis results.

Is above displayed in self-diagnosis display items?

YES

>> GO TO 2.

NO

>> Inspection END

2. 

CHECK CONNECTOR

1.

Disconnect ABS actuator and electric unit (control unit) connector E24 and malfunctioning wheel sensor
connector E20 (FR - LH) or E27 (FR - RH) or B202 (RR - LH), B203 (RR - RH). Check terminal to see if it
is deformed, disconnected, loose, etc., and repair or replace it if any malfunction condition is found.

2.

Reconnect connectors and check that interference with other parts has not cut wheel sensor cables, drive
vehicle at a speed of 30 km/h (19 MPH) or above for at least 1minute, and perform self-diagnosis.

OK or NG

OK

>> Connector terminal contact is loose, damaged, open or shorted.

NG

>> GO TO 3.

Self-diagnosis results

FR RH SENSOR-1,-2

FR LH SENSOR- 1,-2

RR RH SENSOR-1,-2

RR LH SENSOR-1,- 2

ABS SENSOR

SFIA0625E

BRC-52

[ABS]

TROUBLE DIAGNOSIS

Revision; 2004 April

2003 Murano

3. 

CHECK WHEEL SENSOR HARNESS

1.

Turn ignition switch OFF and disconnect wheel sensor connec-
tor E20 (FR - LH), E27 (FR - RH), B202 (RR - LH), B203 (RR -
RH) and ABS actuator and electric unit (control unit) connector
E24.

2.

Check continuity between terminals. (Also check continuity
when steering wheel is turned right and left and when sensor
harness inside wheel well is moved.)

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness and connector between ABS actuator and electric unit (control unit) and wheel

sensor.

4. 

CHECK TIRE

Check air pressure, wear, and size.

Are air pressure, wear, and size within the standard values?

YES

>> GO TO 5.

NO

>> Adjust air pressure, or replace tire.

5. 

CHECK SENSOR AND SENSOR ROTOR

Check condition of sensor mount (for looseness, etc.).

Check surface of front sensor rotor rubber for damage.

Check rear sensor rotor for damage.

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace the malfunctioning component.

PFIA0426E

Power system

Signal system

Ground system

Wheel

ABS actuator 

and electric unit 

(control unit)

Wheel sensor

ABS actuator 

and electric unit 

(control unit)

Wheel sensor

ABS actuator 
and electric unit 
(control unit)

ABS actuator 

and electric unit 

(control unit)

(Ground)

Front RH

34 (B)

1 (B)

33 (W)

2 (W)

33 (W), 34 (B)

16 (B), 47 (B)

Front LH

45 (G)

1 (G)

46 (R)

2 (R)

45 (G), 46 (R)

Rear RH 

43 (LG)

1 (LG)

42 (V)

2 (V)

43 (LG), 42 (V)

Rear LH 

36 (L)

1 (L)

37 (P)

2 (P)

36 (L), 37 (P)

Power system

: Continuity should exist.

Signal system

: Continuity should exist.

Ground system

: Continuity should not exist.

 

 

 

 

 

 

 

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