Nissan Murano Z51 (2008 year). Manual — part 226
ECM
HAC-91
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
94
(GR)
112
(B)
Engine speed output signal
Output
[Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes de-
pending on rpm at idle
1 V
[Engine is running]
• Engine speed: 2,000 rpm
1 V
95
(Y)
104
(SB)
Fuel tank temperature sensor
Input
[Engine is running]
0 - 4.8 V
Output voltage varies with fuel tank
temperature.
96
(GR)
—
Sensor ground
(EVAP control system pres-
sure sensor)
—
—
—
97
(P)
—
CAN communication line
Input/
Output
—
—
98
(L)
—
CAN communication line
Input/
Output
—
—
100
(G)
—
Sensor ground
(Accelerator pedal position
sensor 2)
—
—
—
102
(R)
112
(B)
PNP signal
Input
[Ignition switch: ON]
• Selector lever: P or N position
BATTERY VOLTAGE
(11 - 14 V)
[Ignition switch: ON]
• Selector lever: Except above
position
0 V
104
(SB)
—
Sensor ground
(Fuel tank temperature sen-
sor)
—
—
—
105
(V)
112
(B)
Power supply for ECM
Input
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
106
(SB)
112
(B)
Stop lamp switch
Input
[Ignition switch: OFF]
• Brake pedal: Fully released
0 V
[Ignition switch: OFF]
• Brake pedal: Slightly de-
pressed
BATTERY VOLTAGE
(11 - 14 V)
107
(B)
108
(B)
—
ECM ground
—
—
—
109
(W)
112
(B)
EVAP canister vent control
valve
Output
[Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
JMBIA0076GB
JMBIA0077GB
Revision: 2008 October
2009 Murano
HAC-92
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
ECM
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
*1: This may vary depending on internal resistance of the tester.
*2: Before measuring the terminal voltage, confirm that the battery is fully charged. Refer to
*3: Up to VIN JN8AZ18U*9W100000, JN8AZ18W*9W200000, JN8AZ18U*9W710000, JN8AZ18W*9W810000.
*4: From VIN JN8AZ18U*9W100001, JN8AZ18W*9W200001, JN8AZ18U*9W710001, JN8AZ18W*9W810001.
110
(G)
112
(B)
ASCD brake switch
Input
[Ignition switch: ON]
• Brake pedal: Slightly de-
pressed
0 V
[Ignition switch: ON]
• Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14 V)
111
(B)
112
(B)
—
ECM ground
—
—
—
Terminal No.
Description
Condition
Value
(Approx.)
+
-–
Signal name
Input/
Output
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-93
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
A/C AUTO AMP.
Reference Value
INFOID:0000000003073093
VALUES ON THE DIAGNOSIS TOOL
CONSULT-III MONITOR ITEM
TERMINAL LAYOUT
PHYSICAL VALUES
Monitor item
Condition
Value/Status
COMP REQ SIG
Engine: Run at idle after
warming up
A/C switch: ON
(Compressor operation sta-
tus)
On
A/C switch: OFF
Off
FAN REQ SIG
Engine: Run at idle after
warming up
Blower fan: ON
On
Blower fan: OFF
Off
AMB TEMP SEN
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
IN-VEH TEMP
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
INT TEMP SEN
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
SUNLOAD SEN
Ignition switch ON
—
0 - 1045 w/m
2
(0 - 900 kcal/m
2
·h)
AMB SEN CAL
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
IN-VEH CAL
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
INT TEMP CAL
Ignition switch ON
—
22 - 131
°
F (
−
30 - 55
°
C)
SUNL SEN CAL
Ignition switch ON
—
0 - 1045 w/m
2
(0 - 900 kcal/m
2
·h)
FAN DUTY
Engine: Run at idle after
warming up
Blower fan: ON
25 - 81
Blower fan: OFF
0
XM
Ignition switch ON
—
−
100 - 155
ENG COOL TEMP
Ignition switch ON
—
Values according to coolant
temperature
VEHICLE SPEED
Driving
—
Equivalent to speedometer
reading
JSIIA0964ZZ
Revision: 2008 October
2009 Murano
HAC-94
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
+
−
Signal name
Input/
Output
6
(L)
Ground
TX (AMP > SW·DISP)
Input
—
—
7
(P)
Ground
RX (SW > AMP)
Output
—
—
10
(L)
Ground
LAN signal
Input/
Output
—
11
(R)
Ground
Power supply for each door
motor
Input
Ignition switch ON
Battery voltage
15
(O)
Ground
Sunload sensor
Input
—
—
16
(G)
Ground
Intake sensor
Input
—
—
17
(R)
Ground
Power supply from ACC
—
Ignition switch ACC
Battery voltage
19
(B)
Ground
Ground
—
Ignition switch ON
0 V
20
(G)
Ground
Power supply from IGN
—
Ignition switch ON
Battery voltage
32
(L)
Ground
Blower motor control signal
Output
• Ignition switch ON
• Blower speed: 1st speed
(manual)
34
(P)
Ground
Power supply for ambient
meter
Output
Ignition switch ON
5V
35
(L)
Ground
Ambient sensor
Input
—
—
36
(LG)
Ground
In-vehicle sensor
Input
—
—
37
(Y)
Ground
Sensor ground
—
Ignition switch ON
0 V
39
(B)
Ground
Ground
—
Ignition switch ON
0 V
40
(Y)
Ground
Power supply from BATT
—
Ignition switch OFF
Battery voltage
SJIA1453J
JSIIA0096ZZ
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-95
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Wiring Diagram - AIR CONDITIONER CONTROL SYSTEM -
INFOID:0000000003073094
JCIWM0360GB
Revision: 2008 October
2009 Murano
HAC-96
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
JCIWM0361GB
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-97
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
JCIWM0362GB
Revision: 2008 October
2009 Murano
HAC-98
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
JCIWM0363GB
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-99
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
JCIWM0364GB
Revision: 2008 October
2009 Murano
HAC-100
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
JCIWM0365GB
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-101
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
JCIWM0366GB
Revision: 2008 October
2009 Murano
HAC-102
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
Fail-Safe
INFOID:0000000004731443
FAIL-SAFE FUNCTION
If a communication error exists between the A/C auto amp. and A/C control for 30 seconds or longer, air con-
ditioner is controlled under the following conditions:
JCIWM0367GB
Revision: 2008 October
2009 Murano
A/C AUTO AMP.
HAC-103
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
DTC Inspection Priority Chart
INFOID:0000000003412824
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
DTC Index
INFOID:0000000003412826
Compressor
: ON
Air outlet
: AUTO
Air inlet
: FRE (Fresh air intake)
Fan speed
: AUTO
Set temperature
: Setting before communication error occurs
Priority
Detected items (DTC)
1
• U1000: CAN COMM CIRCUIT
• U1010: CONTROL UNIT (CAN)
2
• B257B: AMB TEMP SEN SHORT
• B257C: AMB TEMP SEN OPEN
• B2578: IN CAR SEN SHORT
• B2579: IN CAR SEN OPEN
• B2581: EVAP TEMP SEN SHORT
• B2582: EVAP TEMP SEN OPEN
• B2630: SUNLOAD SEN SHORT
• B2631: SUNLOAD SEN OPEN
• B2632: DR AIRMIX ACTR SHORT
• B2633: DR AIRMIX ACTR OPEN
• B2634: PASS AIRMIX ACTR SHORT
• B2635: PASS AIRMIX ACTR OPEN
• B2636: DR VENT DOOR FAIL
• B2637: DR B/L DOOR FAIL
• B2638: DR D/F1 DOOR FAIL
• B2639: DR DEF DOOR FAIL
• B263D: FRE DOOR FAIL
• B263E: 20P FRE DOOR FAIL
• B263F: REC DOOR FAIL
• B2654: D/F2 DOOR FAIL
• B2655: B/L2 DOOR FAIL
• B2661: UPPER VENT DOOR OPEN POSI FAIL
• B2662: UPPER VENT DOOR MID POSI FAIL
• B2663: UPPER VENT DOOR SHUT POSI FAIL
DTC
Items
(CONSULT-III screen terms)
Reference
U1000
CAN COMM CIRCUIT
U1010
CONTROL UNIT (CAN)
B257B
AMB TEMP SEN SHORT
B257C
AMB TEMP SEN OPEN
B2578
IN CAR SEN SHORT
B2579
IN CAR SEN OPEN
B2581
EVAP TEMP SEN SHORT
B2582
EVAP TEMP SEN OPEN
B2630
*
SUNLOAD SEN SHORT
B2631
*
SUNLOAD SEN OPEN
B2632
DR AIRMIX ACTR SHORT
B2633
DR AIRMIX ACTR OPEN
Revision: 2008 October
2009 Murano
HAC-104
< ECU DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
A/C AUTO AMP.
*: Perform self-diagnosis under sunshine. When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise self-diag-
nosis indicates even though the sunload sensor is functioning normally.
B2634
PASS AIRMIX ACTR SHORT
B2635
PASS AIRMIX ACTR OPEN
B2636
DR VENT DOOR FAIL
B2637
DR B/L DOOR FAIL
B2638
DR D/F1 DOOR FAIL
B2639
DR DEF DOOR FAIL
B263D
FRE DOOR FAIL
B263E
20P FRE DOOR FAIL
B263F
REC DOOR FAIL
B2654
D/F2 DOOR FAIL
B2655
B/L2 DOOR FAIL
B2661
UPPER VENT DOOR OPEN POSI FAIL
B2662
UPPER VENT DOOR MID POSI FAIL
B2663
UPPER VENT DOOR SHUT POSI FAIL
DTC
Items
(CONSULT-III screen terms)
Reference
Revision: 2008 October
2009 Murano
AIR CONDITIONER CONTROL
HAC-105
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
SYMPTOM DIAGNOSIS
AIR CONDITIONER CONTROL
Diagnosis Chart By Symptom
INFOID:0000000003073096
Symptom
Reference
A/C system does not activate.
Go to Trouble Diagnosis Procedure for A/C Control Signal
Circuit.
A/C display dose not work.
Go to Trouble Diagnosis Procedure for A/C Display.
Air outlet does not change.
Go to Trouble Diagnosis Procedure for Mode Door Motor.
(LAN)
Mode door motor does not operate
normally.
Discharge air temperature does not
change.
Go to Trouble Diagnosis Procedure for Air Mix Door Motor.
(LAN)
(pas-
senger side)
Air mix door motor does not operate
normally.
Intake door does not change.
Go to Trouble Diagnosis Procedure for Intake Door Motor.
(LAN)
Intake door motor does not operate
normally.
Blower motor operation is malfunc-
tioning.
Go to Trouble Diagnosis Procedure for Blower Motor.
Magnet clutch does not engage.
Go to Trouble Diagnosis Procedure for Magnet Clutch.
Insufficient cooling
Go to Trouble Diagnosis Procedure for Insufficient Cooling.
No cool air comes out.
(Air flow volume is normal.)
Insufficient heating
Go to Trouble Diagnosis Procedure for Insufficient Heating.
No warm air comes out.
(Air flow volume is normal.)
Noise
Go to Trouble Diagnosis Procedure for Noise.
Memory function does not operate.
Go to Trouble Diagnosis Procedure for Memory Function.
Revision: 2008 October
2009 Murano
HAC-106
< SYMPTOM DIAGNOSIS >
[WITHOUT 7 INCH DISPLAY]
INSUFFICIENT COOLING
INSUFFICIENT COOLING
Description
INFOID:0000000003073097
Symptom
• Insufficient cooling
• No cool air comes out. (Air flow volume is normal.)
Inspection procedure
INFOID:0000000003073098
1.
CHECK WITH A GAUGE OF RECOVERY/RECYCLING RECHARGING EQUIPMENT
Connect the recovery/recycling recharging equipment to the vehicle and perform the pressure inspection with
the gauge.
Is there refrigerant?
YES
>> GO TO 2.
NO-1
>> Check for refrigerant leakages with the refrigerant leakage detecting fluorescent leak detector.
.
NO-2
>> GO TO 2 after repairing or replacing the parts according to the inspection results.
2.
CHECK CHARGED REFRIGERANT AMOUNT
1.
Connect recovery/recycling recharging equipment to the vehicle and discharge the refrigerant.
2.
Recharge with the proper amount of refrigerant and perform the inspection with the refrigerant leakage
detecting fluorescent leak detector. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Refill the refrigerant and repair or replace the parts according to the inspection results.
3.
CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling recharging equipment to the vehicle and perform the performance test. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Perform the diagnosis with the gauge pressure. Refer to
HA-8, "Trouble Diagnosis For Unusual
4.
CHECK SETTING OF TEMPERATURE SETTING TRIMMER
Using CONSULT-III, check the setting of “TEMP SET CORRECT” on “WORK SUPPORT” of HVAC. Refer to
HAC-9, "Temperature Setting Trimmer"
1.
Check that the temperature setting trimmer is set to “+ direction”.
NOTE:
The control temperature can be set with the setting of the temperature setting trimmer.
2.
Set temperature control dial to “0”.
Are the malfunction solved?
YES
>> Perform the setting separately if necessary. END.
NO
>> GO TO 5.
5.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1.
Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2.
Check if any DTC No. is displayed in the trouble diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
.
Is any DTC No. displayed?
YES
>> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to
.
NO
>> GO TO 6.
6.
CHECK WITH ACTIVE TEST OF CONSULT-III
Revision: 2008 October
2009 Murano
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