Nissan Murano Z50 (2004 year). Manual - part 108

ASCD BRAKE SWITCH

EC-639

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ASCD BRAKE SWITCH

PFP:25320

Component Description

ABS004P1

When the brake pedal is depressed, ASCD brake switch is turned
OFF and stop lamp switch is turned ON. ECM detects the state of
the brake pedal by this input of two kinds (ON/OFF signal).
Refer to 

EC-665, "AUTOMATIC SPEED CONTROL DEVICE

(ASCD)"

   for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

ABS004VT

Specification data are reference values.

PBIB1368E

MONITOR ITEM

CONDITION

SPECIFICATION

BRAKE SW1

●

Ignition switch: ON

Brake pedal: Fully released

ON

Brake pedal: Slightly depressed

OFF

BRAKE SW2

●

Ignition switch: ON

Brake pedal: Fully released

OFF

Brake pedal: Slightly depressed

ON

EC-640

ASCD BRAKE SWITCH

Revision: 2004 November

2004 Murano

Wiring Diagram

ABS004VU

TBWA0393E

ASCD BRAKE SWITCH

EC-641

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Specification data are reference values and are measured between each terminal and ground.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

Diagnostic Procedure

ABS004P4

1. 

CHECK OVERALL FUNCTION-I

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.

3.

Check “BRAKE SW1” indication under the following conditions.

 Without CONSULT-II

1.

Turn ignition switch ON.

2.

Check voltage between ECM terminal 108 and ground under the
following conditions.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

101

R/G

Stop lamp switch

[Ignition switch: OFF]

●

Brake pedal is fully released

Approximately 0V

[Ignition switch: OFF]

●

Brake pedal is depressed

BATTERY VOLTAGE
(11 - 14V)

108

L/B

ASCD brake switch

[Ignition switch: ON]

●

Brake pedal is depressed

Approximately 0V

[Ignition switch: ON]

●

Brake pedal is fully released

BATTERY VOLTAGE
(11 - 14V)

CONDITION

INDICATION

When brake pedal is depressed

OFF

When brake pedal is fully released

ON

SEC011D

CONDITION

VOLTAGE

When brake pedal is depressed

Approximately 0V

When brake pedal is fully released

Battery voltage

MBIB0061E

EC-642

ASCD BRAKE SWITCH

Revision: 2004 November

2004 Murano

2. 

CHECK OVERALL FUNCTION-II

 With CONSULT-II

Check “BRAKE SW2” indication in “DATA MONITOR” mode. 

 Without CONSULT-II

Check voltage between ECM terminal 101 and ground under the following conditions.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

CONDITION

INDICATION

When brake pedal is released

OFF

When brake pedal is depressed

ON

SEC013D

CONDITION

VOLTAGE

When brake pedal is released

Approximately 0V

When brake pedal is depressed

Battery voltage

MBIB0060E

ASCD BRAKE SWITCH

EC-643

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3. 

CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 4.

4. 

DETECT MALFUNCTIONING PART

Check the following.

●

Fuse block (J/B) connector E101

●

10A fuse

●

Harness for open or short between ASCD brake switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. 

CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.

4.

Also check harness for short to ground or short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E109, M6

●

Harness for open or short between ECM and ASCD brake switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

PBIB1368E

Voltage: Battery voltage

PBIB0857E

Continuity should exist.

EC-644

ASCD BRAKE SWITCH

Revision: 2004 November

2004 Murano

7. 

CHECK ASCD BRAKE SWITCH

Refer to 

EC-545, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace ASCD brake switch.

8. 

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check voltage between stop lamp switch terminal 1 and ground
with CONSULT -II or tester.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 9.

9. 

DETECT MALFUNCTIONING PART

Check the following.

●

Fuse block (J/B) connector E101

●

10A fuse

●

Harness for open or short between stop lamp switch and fuse

>> Repair open circuit or short to ground or short to power in harness or connectors.

10. 

CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 12.

NG

>> GO TO 11.

PBIB1368E

Voltage: Battery voltage

PBIB0117E

Continuity should exist.

ASCD BRAKE SWITCH

EC-645

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11. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors E110, M7

●

Harness for open or short between ECM and stop lamp switch

>> Repair open circuit or short to ground or short to power in harness or connectors.

12. 

CHECK STOP LAMP SWITCH

Refer to 

EC-545, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace stop lamp switch.

13. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-130, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

ABS004P5

ASCD BRAKE SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect ASCD brake switch harness connector.

3.

Check continuity between ASCD brake switch terminals 1 and 2
under the following conditions.

If NG, adjust ASCD brake switch installation, refer to 

BR-6,

"BRAKE PEDAL"

 , and perform step 3 again.

STOP LAMP SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check continuity between stop lamp switch terminals 1 and 2
under the following conditions.

If NG, adjust stop lamp switch installation, refer to 

BR-6,

"BRAKE PEDAL"

 , and perform step 3 again.

Condition

Continuity

When brake pedal is fully released.

Should exist.

When brake pedal is depressed.

Should not exist.

SEC023D

Condition

Continuity

When brake pedal is fully released.

Should not exist.

When brake pedal is depressed.

Should exist.

PBIB0118E

EC-646

ASCD INDICATOR

Revision: 2004 November

2004 Murano

ASCD INDICATOR

PFP:24814

Component Description

ABS004P6

ASCD indicator lamp illuminates to indicate ASCD operation status. Lamp has two indicators, CRUISE and
SET, and is integrated in combination meter.
CRUISE indicator illuminates when ON/OFF(MAIN) switch on ASCD steering switch is turned ON to indicated
that ASCD system is ready for operation.
SET indicator illuminates when following conditions are met. 

●

CRUISE indicator is illuminated.

●

COAST/SET switch on ASCD steering switch is turned ON while vehicle speed is within the range of
ASCD setting.

SET indicator remains lit during ASCD control.
Refer to 

EC-665, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

   for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

ABS004VV

Specification data are reference value.

MONITOR ITEM

CONDITION

SPECIFICATION

CRUISE LAMP

●

Ignition switch: ON

ON/OFF (MAIN) switch: Pressed at 
the 1st time 

→

 at the 2nd time

ON 

→

 OFF

SET LAMP

●

ON/OFF (MAIN) switch: ON

●

When vehicle speed is between 
40 km/h (25 MPH) and 144 km/h 
(89 MPH)

COAST/SET switch: Pressed

ON

COAST/SET switch: Released

OFF

ASCD INDICATOR

EC-647

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Wiring Diagram

ABS004VW

TBWA0394E

EC-648

ASCD INDICATOR

Revision: 2004 November

2004 Murano

Diagnostic Procedure

ABS004VX

1. 

CHECK OVERALL FUNCTION

Check ASCD indicator under the following conditions.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2. 

CHECK DTC

Check that DTC U1000 or U1001 is not displayed.

OK or NG

OK

>> GO TO 3.

NG

>> Perform trouble diagnoses for DTC U1000, U1001. Refer to 

EC-140, "DTC U1000, U1001 CAN

COMMUNICATION LINE"

 .

3. 

CHECK DTC WITH UNIFIED METER AND A/C AMP.

Refer to 

DI-36, "SELF-DIAGNOSTIC RESULTS"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Go to 

DI-23, "Communication Line Inspection"

 .

4. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-130, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

MONITOR ITEM

CONDITION

SPECIFICATION

CRUISE LAMP

●

Ignition switch: ON

ON/OFF (MAIN) switch: Pressed at 
the 1st time 

→

 at the 2nd time

ON 

→

 OFF

SET LAMP

●

ON/OFF (MAIN) switch: ON

●

When vehicle speed is between 
40 km/h (25 MPH) and 144 km/h 
(89 MPH)

COAST/SET switch: Pressed

ON

COAST/SET switch: Released

OFF

MIL AND DATA LINK CONNECTOR

EC-649

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MIL AND DATA LINK CONNECTOR

PFP:24814

Wiring Diagram

ABS004PA

TBWA0374E

EC-650

MIL AND DATA LINK CONNECTOR

Revision: 2004 November

2004 Murano

TBWA0375E

EVAPORATIVE EMISSION SYSTEM

EC-651

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EVAPORATIVE EMISSION SYSTEM

PFP:14950

Description

ABS004PB

SYSTEM DESCRIPTION

The evaporative emission system is used to reduce hydrocarbons emitted into the atmosphere from the fuel
system. This reduction of hydrocarbons is accomplished by activated charcoals in the EVAP canister.
The fuel vapor in the sealed fuel tank is led into the EVAP canister which contains activated carbon and the
vapor is stored there when the engine is not operating or when refueling to the fuel tank.
The vapor in the EVAP canister is purged by the air through the purge line to the intake manifold when the
engine is operating. EVAP canister purge volume control solenoid valve is controlled by ECM. When the
engine operates, the flow rate of vapor controlled by EVAP canister purge volume control solenoid valve is
proportionally regulated as the air flow increases.
EVAP canister purge volume control solenoid valve also shuts off the vapor purge line during decelerating and
idling.

PBIB1685E

EC-652

EVAPORATIVE EMISSION SYSTEM

Revision: 2004 November

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EVAPORATIVE EMISSION LINE DRAWING

PBIB1296E

EVAPORATIVE EMISSION SYSTEM

EC-653

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PBIB1385E

EC-654

EVAPORATIVE EMISSION SYSTEM

Revision: 2004 November

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Component Inspection

ABS004PC

EVAP CANISTER

Check EVAP canister as follows:

1.

Block port B .

2.

Blow air into port A   and check that it flows freely out of port C .

3.

Release blocked port B .

4.

Apply vacuum pressure to port B   and check that vacuum pres-
sure exists at the ports A   and C .

5.

Block port A   and B .

6.

Apply pressure to port C   and check that there is no leakage.

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)

1.

Wipe clean valve housing.

2.

Check valve opening pressure and vacuum.

3.

If out of specification, replace fuel filler cap as an assembly.

CAUTION:

Use only a genuine fuel filler cap as a replacement. If an incor-
rect fuel filler cap is used, the MIL may come on.

EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Refer to 

EC-300

  .

FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-241

  .

EVAP CANISTER VENT CONTROL VALVE

Refer to 

EC-306

  .

EVAP CONTROL SYSTEM PRESSURE SENSOR

Refer to 

EC-317

  .

PBIB1044E

SEF445Y

Pressure:

15.3 - 20.0 kPa (0.156 - 0.204 kg/cm

2

  , 2.22 

- 2.90 psi)

Vacuum:

−

6.0 to 

−

3.3 kPa (

−

0.061 to 

−

0.034 kg/cm

2

  

, 

−

0.87 to 

−

0.48 psi)

SEF943S