Nissan Murano Z50 (2003 year). Manual — part 120
ELECTRICAL LOAD SIGNAL
EC-639
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Revision; 2004 April
2003 Murano
ELECTRICAL LOAD SIGNAL
PFP:25350
Description
ABS004OY
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
CONSULT-II Reference Value in Data Monitor Mode
ABS004OZ
Specification data are reference values.
Diagnostic Procedure
ABS004P0
1.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
1.
Turn ignition switch “ON”.
2.
Connect CONSULT-II and select "DATA MONITOR" mode.
3.
Select "LOAD SIGNAL" and check indication under the following
conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
Check "LOAD SIGNAL" indication under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 4.
3.
CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to
.
>> INSPECTION END
4.
CHECK HEADLAMP SYSTEM
Refer to
LT-8, "HEADLAMP - XENON TYPE -"
LT-58, "HEADLAMP -CONVENTIONAL TYPE-"
>> INSPECTION END
MONITOR ITEM
CONDITION
SPECIFICATION
LOAD SIGNAL
●
Ignition switch: ON
Rear window defogger switch is ON
and/or lighting switch is in 2nd.
ON
Rear window defogger switch is OFF
and lighting switch is OFF.
OFF
Condition
Indication
Rear window defogger switch "ON"
ON
Rear window defogger switch "OFF"
OFF
PBIB0103E
Condition
Indication
Lighting switch "ON" at 2nd position
ON
Lighting switch "OFF"
OFF
PBIB0103E
EC-640
ASCD BRAKE SWITCH
Revision; 2004 April
2003 Murano
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-666, "AUTOMATIC SPEED CONTROL DEVICE
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
ASCD BRAKE SWITCH
EC-641
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Wiring Diagram
ABS004VU
TBWA0393E
EC-642
ASCD BRAKE SWITCH
Revision; 2004 April
2003 Murano
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 “ON”]
●
Brake pedal is fully released
Approximately 0V
[Ignition switch “ON”]
●
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
ASCD BRAKE SWITCH
EC-643
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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
EC-644
ASCD BRAKE SWITCH
Revision; 2004 April
2003 Murano
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.
ASCD BRAKE SWITCH
EC-645
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7.
CHECK ASCD BRAKE SWITCH
Refer to
EC-546, "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.
EC-646
ASCD BRAKE SWITCH
Revision; 2004 April
2003 Murano
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-546, "Component Inspection"
OK or NG
OK
>> GO TO 13.
NG
>> Replace stop lamp switch.
13.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "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
, 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
, 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
ASCD INDICATOR
EC-647
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Revision; 2004 April
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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 CRUISE 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.
●
SET switch on ASCD steering switch is turned ON while vehicle speed is within the range of ASCD set-
ting.
SET indicator remains lit during ASCD control.
Refer to
EC-666, "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
CRUISE switch pressed
ON
CRUISE switch released
OFF
SET LAMP
●
CRUISE 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
EC-648
ASCD INDICATOR
Revision; 2004 April
2003 Murano
Wiring Diagram
ABS004VW
TBWA0394E
ASCD INDICATOR
EC-649
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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
.
3.
CHECK DTC WITH UNIFIED METER AND A/C AMP.
Refer to
DI-58, "SELF-DIAGNOSTIC RESULTS"
OK or NG
OK
>> GO TO 4.
NG
DI-24, "Communication Line Inspection"
4.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
ASCD INDICATOR
CONDITION
SPECIFICATION
CRUISE LAMP
●
Ignition switch: ON
CRUISE switch pressed
ON
CRUISE switch released
OFF
SET LAMP
●
CRUISE 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
EC-650
MIL AND DATA LINK CONNECTOR
Revision; 2004 April
2003 Murano
MIL AND DATA LINK CONNECTOR
PFP:24814
Wiring Diagram
ABS004PA
TBWA0374E
MIL AND DATA LINK CONNECTOR
EC-651
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Revision; 2004 April
2003 Murano
TBWA0375E
EC-652
EVAPORATIVE EMISSION SYSTEM
Revision; 2004 April
2003 Murano
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.
PBIB1067E
EVAPORATIVE EMISSION SYSTEM
EC-653
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Revision; 2004 April
2003 Murano
EVAPORATIVE EMISSION LINE DRAWING
PBIB1296E
EC-654
EVAPORATIVE EMISSION SYSTEM
Revision; 2004 April
2003 Murano
PBIB1385E
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