Nissan Murano Z50 (2003 year). Manual — part 87
TROUBLE DIAGNOSIS
EC-111
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Revision; 2004 April
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PBIB1386E
PBIB1293E
EC-112
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
PBIB1294E
TROUBLE DIAGNOSIS
EC-113
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Revision; 2004 April
2003 Murano
Circuit Diagram
ABS004AY
TBWA0339E
EC-114
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
TBWA0340E
TROUBLE DIAGNOSIS
EC-115
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Revision; 2004 April
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ECM Harness Connector Terminal Layout
ABS004AZ
ECM Terminals and Reference Value
ABS004B0
PREPARATION
1.
ECM is located behind the glove box. For this inspection,
remove glove box.
2.
Remove ECM harness connector.
3.
When disconnecting ECM harness connector, loosen it with
levers as far as they will go as shown at right.
4.
Connect a break-out box (SST) and Y-cable adapter (SST)
between the ECM and ECM harness connector.
●
Use extreme care not to touch 2 pins at one time.
●
Data is for comparison and may not be exact.
ECM INSPECTION TABLE
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.
MBIB0045E
PBIB1299E
PBIB1512E
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
1
B
ECM ground
[Engine is running]
●
Idle speed
Engine ground
EC-116
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
2
R/L
Heated oxygen sensor 1
heater (bank 2)
[Engine is running]
●
Warm-up condition
●
Engine speed is below 3,600 rpm.
Approximately 8V
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
3
R
Throttle control motor relay
power supply
[Ignition switch "ON"]
BATTERY VOLTAGE
(11 - 14V)
4
B
Throttle control motor
(Close)
[Ignition switch "ON"]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal is releasing
0 - 14V
5
W
Throttle control motor
(Open)
[Ignition switch "ON"]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal is depressing
0 - 14V
6
L/R
Heated oxygen sensor 2
heater (bank 2)
[Engine is running]
●
Engine speed is below 3,600 rpm after the
following conditions are met.
–
Engine: after warming up
–
Keeping the engine speed between 3,500
and 4,000 rpm for one minute and at idle for
one minute under no load.
0 - 1.0V
[Ignition switch “ON”]
●
Engine stopped
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB0519E
PBIB1104E
PBIB1105E
TROUBLE DIAGNOSIS
EC-117
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Revision; 2004 April
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10
Y
Intake valve timing control
solenoid valve (bank 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm.
7 - 12V
11
P/L
Intake valve timing control
solenoid valve (bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm.
7 - 12V
12
W
Power steering pressure
sensor
[Engine is running]
●
Steering wheel is being turned.
0.5 - 4.5V
[Engine is running]
●
Steering wheel is not being turned.
0.4 - 0.8V
13
W
Crankshaft position sensor
(POS)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 1.6V
[Engine is running]
●
Engine speed is 2,000 rpm.
Approximately 1.4V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB1037E
PBIB1038E
PBIB1037E
PBIB1038E
PBIB1041E
PBIB1042E
EC-118
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
14
W
Camshaft position sensor
(PHASE) (bank 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
1.0 - 4.0V
[Engine is running]
●
Engine speed is 2,000 rpm.
1.0 - 4.0V
15
W
Knock sensor
[Engine is running]
●
Idle speed
Approximately 2.5V
16
LG
Heated oxygen sensor 1
(bank 2)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm.
0 - Approximately 1.0V
(Periodically change)
21
22
23
L/W
R/Y
R/B
Injector No. 5
Injector No. 3
Injector No. 1
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm.
BATTERY VOLTAGE
(11 - 14V)
24
O
Heated oxygen sensor 1
heater (bank 1)
[Engine is running]
●
Warm-up condition
●
Engine speed is below 3,600 rpm.
Approximately 8V
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB1039E
PBIB1040E
SEC984C
SEC985C
PBIB0519E
TROUBLE DIAGNOSIS
EC-119
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25
P/L
Heated oxygen sensor 2
heater (bank 1)
[Engine is running]
●
Engine speed is below 3,600 rpm after the
following conditions are met.
–
Engine: after warming up
–
Keeping the engine speed between 3,500
and 4,000 rpm for one minute and at idle for
one minute under no load.
0 - 1.0V
[Ignition switch “ON”]
●
Engine stopped
[Engine is running]
●
Engine speed is above 3,600 rpm.
BATTERY VOLTAGE
(11 - 14V)
29
G/Y
VIAS control solenoid valve
[Engine is running]
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Engine speed is between 1,800 and 3,600
rpm.
0 - 1.0V
32
BR
EVAP control system pres-
sure sensor
[Ignition switch “ON”]
Approximately 1.8 - 4.8V
33
Y
Camshaft position sensor
(PHASE) (bank 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
1.0 - 4.0V
[Engine is running]
●
Engine speed is 2,000 rpm.
1.0 - 4.0V
34
Y/G
Intake air temperature sen-
sor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with intake
air temperature.
35
LG
Heated oxygen sensor 1
(bank 1)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm.
0 - Approximately 1.0V
(Periodically change)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
PBIB1039E
PBIB1040E
EC-120
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
40
41
42
R/G
L/R
R/W
Injector No. 6
Injector No. 4
Injector No. 2
[Engine is running]
●
Warm-up condition
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,000 rpm
BATTERY VOLTAGE
(11 - 14V)
44
BR/W
Electronic controlled engine
mount-1
[Engine is running]
●
Idle speed
0 - 3.0V
[Engine is running]
●
Except the above
BATTERY VOLTAGE
(11 - 14V)
45
GR/L
EVAP canister purge vol-
ume control solenoid valve
[Engine is running]
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Engine speed is about 2,000 rpm (More
than 100 seconds after starting engine).
BATTERY VOLTAGE
(11 - 14V)
47
G
Sensors' power supply
(Throttle position sensor)
[Ignition switch “ON”]
Approximately 5V
48
G/O
Sensors' power supply
(EVAP control system pres-
sure sensor)
[Ignition switch “ON”]
Approximately 5V
49
R/W
Sensors' power supply
(Refrigerant pressure sen-
sor)
[Ignition switch “ON”]
Approximately 5V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
SEC984C
SEC985C
SEC990C
SEC991C
TROUBLE DIAGNOSIS
EC-121
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50
W
Throttle position sensor 1
[Ignition switch "ON"]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal fully released
More than 0.36V
[Ignition switch “ON”]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal fully depressed
Less than 4.75V
51
G/W
Mass air flow sensor
[Engine is running]
●
Warm-up condition
●
Idle speed
1.1 - 1.5V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,500 rpm.
1.7 - 2.4V
55
W
Heated oxygen sensor 2
(bank 2)
[Engine is running]
●
Warm-up condition
●
Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.
–
After keeping the engine speed between
3,500 and 4,000 rpm for one minute and at
idle for one minute under no load.
0 - Approximately 1.0V
60
61
62
BR/R
L/R
Y/R
Ignition signal No. 5
Ignition signal No. 3
Ignition signal No. 1
[Engine is running]
●
Warm-up condition
●
Idle speed
0 - 0.3V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,500 rpm.
0.1 - 0.6V
63
W/R
Electronic controlled engine
mount-2
[Engine is running]
●
Idle speed
BATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●
Except the above
0 - 3.0V
66
B
Sensors' ground
(Throttle position sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
SEC986C
SEC987C
EC-122
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
67
B
Sensors' ground
(MAF sensor / IAT sensor /
PSP sensor / EVAP control
system pressure sensor /
ASCD steering switch /
Refrigerant pressure sen-
sor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
68
R/Y
Sensors' power supply
(PSP sensor)
[Ignition switch “ON”]
Approximately 5V
69
R
Throttle position sensor 2
[Ignition switch "ON"]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal fully released
Less than 4.75V
[Ignition switch “ON”]
●
Engine stopped
●
Shift lever: "D"
●
Accelerator pedal fully depressed
More than 0.36V
70
W
Refrigerant pressure sensor
[Engine is running]
●
Warm-up condition
●
Both A/C switch and blower switch are “ON”.
(Compressor operates.)
1.0 - 4.0V
73
Y
Engine coolant temperature
sensor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with
engine coolant temperature.
74
W
Heated oxygen sensor 2
(bank 1)
[Engine is running]
●
Warm-up condition
●
Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.
–
After keeping the engine speed between
3,500 and 4,000 rpm for one minute and at
idle for one minute under no load.
0 - Approximately 1.0V
78
B
Sensors' ground
(Heated oxygen sensor)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
79
80
81
GR/R
GR
G/R
Ignition signal No. 6
Ignition signal No. 4
Ignition signal No. 2
[Engine is running]
●
Warm-up condition
●
Idle speed
0 - 0.3V
[Engine is running]
●
Warm-up condition
●
Engine speed is 2,500 rpm.
0.1 - 0.6V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
SEC986C
SEC987C
TROUBLE DIAGNOSIS
EC-123
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82
B
Sensors' ground
(APP sensor 1)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
83
G
Sensors' ground
(APP sensor 2)
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
85
O
Data link connector
[Ignition switch “ON”]
●
CONSULT-II or GST is disconnected.
Approximately 5V - Battery volt-
age (11 - 14V)
86
Y
CAN communication line
[Ignition switch “ON”]
Approximately 1.1 - 2.3V
Output voltage varies with the
communication status.
90
R/W
Sensors' power supply
(APP sensor 1)
[Ignition switch “ON”]
Approximately 5V
91
P
Sensors' power supply
(APP sensor 2)
[Ignition switch “ON”]
Approximately 5V
94
L
CAN communication line
[Ignition switch “ON”]
Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
98
W/R
Accelerator pedal position
sensor 2
[Ignition switch "ON"]
●
Engine stopped
●
Accelerator pedal fully released
0.25 - 0.50V
[Ignition switch "ON"]
●
Engine stopped
●
Accelerator pedal fully depressed
2.0 - 2.5V
99
G/Y
ASCD steering switch
[Ignition switch “ON”]
●
ASCD steering switch is released.
Approximately 4V
[Ignition switch “ON”]
●
CRUISE switch is pressed.
Approximately 0V
[Ignition switch “ON”]
●
CANCEL switch is pressed.
Approximately 1V
[Ignition switch “ON”]
●
COAST/SET switch is pressed.
Approximately 2V
[Ignition switch “ON”]
●
ACCEL/RESUME switch is pressed.
Approximately 3V
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)
102
G/W
PNP switch
[Ignition switch “ON”]
●
Shift lever: “P” or “N”
Approximately 0V
[Ignition switch “ON”]
●
Except the above gear position
BATTERY VOLTAGE
(11 - 14V)
104
P/L
Throttle control motor relay
[Ignition switch "OFF"]
BATTERY VOLTAGE
(11 - 14V)
[Ignition switch "ON"]
0 - 1.0V
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
EC-124
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
106
W
Accelerator pedal position
sensor 1
[Ignition switch "ON"]
●
Engine stopped
●
Accelerator pedal fully released
0.5 - 1.0V
[Ignition switch "ON"]
●
Engine stopped
●
Accelerator pedal fully depressed
4.2 - 4.8V
107
R/Y
Fuel tank temperature sen-
sor
[Engine is running]
Approximately 0 - 4.8V
Output voltage varies with fuel
tank temperature.
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)
109
R
Ignition switch
[Ignition switch “OFF”]
0V
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
111
W/B
ECM relay
(Self shut-off)
[Engine is running]
[Ignition switch “OFF”]
●
For a few seconds after turning ignition
switch “OFF”
0 - 1.5V
[Ignition switch “OFF”]
●
A few seconds passed after turning ignition
switch “OFF”
BATTERY VOLTAGE
(11 - 14V)
113
B/P
Fuel pump relay
[Ignition switch “ON”]
●
For 1 second after turning ignition switch
“ON”
[Engine is running]
0 - 1.5V
[Ignition switch “ON”]
●
More than 1 second after turning ignition
switch “ON”.
BATTERY VOLTAGE
(11 - 14V)
115
116
B
B
ECM ground
[Engine is running]
●
Idle speed
Engine ground
117
R
EVAP canister vent control
valve
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
119
120
R/B
R/B
Power supply for ECM
[Ignition switch “ON”]
BATTERY VOLTAGE
(11 - 14V)
121
W
Power supply for ECM
(Buck-up)
[Ignition switch “OFF”]
BATTERY VOLTAGE
(11 - 14V)
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
TROUBLE DIAGNOSIS
EC-125
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CONSULT-II Function
ABS004B1
FUNCTION
*: The following emission-related diagnostic information is cleared when the ECM memory is erased.
●
Diagnostic trouble codes
●
1st trip diagnostic trouble codes
●
Freeze frame data
●
1st trip freeze frame data
●
System readiness test (SRT) codes
●
Test values
●
Others
Diagnostic test mode
Function
Work support
This mode enables a technician to adjust some devices faster and more accurately by following the
indications on the CONSULT-II unit.
Self-diagnostic results
Self-diagnostic results such as 1st trip DTC, DTCs and 1st trip freeze frame data or freeze frame data
can be read and erased quickly.*
Data monitor
Input/Output data in the ECM can be read.
Data monitor (SPEC)
Input/Output of the specification for Basic fuel schedule, AFM, A/F feedback control value and the
other data monitor items can be read.
CAN diagnostic support
monitor
The results of transmit/receive diagnosis of CAN communication can be read.
Active test
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the ECMs and also
shifts some parameters in a specified range.
DTC & SRT confirmation
The status of system monitoring tests and the self-diagnosis status/result can be confirmed.
Function test
This mode is used to inform customers when their vehicle condition requires periodic maintenance.
ECM part number
ECM part number can be read.
EC-126
TROUBLE DIAGNOSIS
Revision; 2004 April
2003 Murano
ENGINE CONTROL COMPONENT PARTS/CONTROL SYSTEMS APPLICATION
Item
DIAGNOSTIC TEST MODE
WORK
SUP-
PORT
SELF-DIAGNOSTIC
RESULTS
DATA
MONI-
TOR
DATA
MONI-
TOR
(SPEC)
ACTIVE
TEST
DTC & SRT
CONFIRMATION
DTC*1
FREEZE
FRAME
DATA*2
SRT
STATUS
DTC
WORK
SUP-
PORT
ENGI
NE CONTROL
COMPONENT P
ARTS
INPUT
Crankshaft position sensor (POS)
×
×
×
×
Camshaft position sensor (PHASE)
×
×
×
×
Mass air flow sensor
×
×
×
Engine coolant temperature sensor
×
×
×
×
×
Heated oxygen sensor 1
×
×
×
×
×
Heated oxygen sensor 2
×
×
×
×
×
Vehicle speed sensor
×
×
×
×
Accelerator pedal position sensor
×
×
×
Throttle position sensor
×
×
×
Fuel tank temperature sensor
×
×
×
×
EVAP control system pressure
sensor
×
×
×
Intake air temperature sensor
×
×
×
×
Knock sensor
×
Refrigerant pressure sensor
×
×
Closed throttle position switch
(accelerator pedal position sensor
signal)
×
×
Air conditioner switch
×
×
Park/neutral position (PNP) switch
×
×
×
Stop lamp switch
×
×
×
Power steering pressure sensor
×
×
×
Battery voltage
×
×
Load signal
×
×
Primary speed sensor
×
×
×
Fuel level sensor
×
×
×
ASCD steering switch
×
×
×
ASCD brake switch
×
×
×
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