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

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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 

PG-3, "How to Handle Battery"

.

*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

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G

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K

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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

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K

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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

HAC-42, "DTC Logic"

U1010

CONTROL UNIT (CAN)

HAC-43, "DTC Logic"

B257B

AMB TEMP SEN SHORT

HAC-44, "DTC Logic"

B257C

AMB TEMP SEN OPEN

HAC-44, "DTC Logic"

B2578

IN CAR SEN SHORT

HAC-47, "DTC Logic"

B2579

IN CAR SEN OPEN

HAC-47, "DTC Logic"

B2581

EVAP TEMP SEN SHORT

HAC-50, "DTC Logic"

B2582

EVAP TEMP SEN OPEN

HAC-50, "DTC Logic"

B2630

*

SUNLOAD SEN SHORT

HAC-53, "DTC Logic"

B2631

*

SUNLOAD SEN OPEN

HAC-53, "DTC Logic"

B2632

DR AIRMIX ACTR SHORT

HAC-56, "DTC Logic"

B2633

DR AIRMIX ACTR OPEN

HAC-56, "DTC Logic"

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

HAC-58, "DTC Logic"

B2635

PASS AIRMIX ACTR OPEN

HAC-58, "DTC Logic"

B2636

DR VENT DOOR FAIL

HAC-60, "DTC Logic"

B2637

DR B/L DOOR FAIL

HAC-60, "DTC Logic"

B2638

DR D/F1 DOOR FAIL

HAC-60, "DTC Logic"

B2639

DR DEF DOOR FAIL

HAC-60, "DTC Logic"

B263D

FRE DOOR FAIL

HAC-63, "DTC Logic"

B263E

20P FRE DOOR FAIL

HAC-63, "DTC Logic"

B263F

REC DOOR FAIL

HAC-63, "DTC Logic"

B2654

D/F2 DOOR FAIL

HAC-60, "DTC Logic"

B2655

B/L2 DOOR FAIL

HAC-60, "DTC Logic"

B2661

UPPER VENT DOOR OPEN POSI FAIL

HAC-65, "DTC Logic"

B2662

UPPER VENT DOOR MID POSI FAIL

HAC-65, "DTC Logic"

B2663

UPPER VENT DOOR SHUT POSI FAIL

HAC-65, "DTC Logic"

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

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F

G

H

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K

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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.

HAC-74, "Diagnosis Proce-

dure"

A/C display dose not work.

Go to Trouble Diagnosis Procedure for A/C Display.

HAC-77, "A/C DISPLAY : Diag-

nosis Procedure"

 

Air outlet does not change.

Go to Trouble Diagnosis Procedure for Mode Door Motor. 
(LAN)

HAC-61, "Diagnosis Proce-

dure"

Mode door motor does not operate 
normally.

Discharge air temperature does not 
change.

Go to Trouble Diagnosis Procedure for Air Mix Door Motor. 
(LAN)

HAC-57, "Diagnosis Proce-

dure"

 (driver side) or 

HAC-59, 

"Diagnosis Procedure"

 (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)

HAC-64, "Diagnosis Proce-

dure"

Intake door motor does not operate 
normally.

Blower motor operation is malfunc-
tioning.

Go to Trouble Diagnosis Procedure for Blower Motor.

HAC-68, "Diagnosis Proce-

dure"

Magnet clutch does not engage.

Go to Trouble Diagnosis Procedure for Magnet Clutch.

HAC-72, "Diagnosis Proce-

dure"

Insufficient cooling

Go to Trouble Diagnosis Procedure for Insufficient Cooling.

HAC-106, "Inspection proce-

dure"

No cool air comes out.
(Air flow volume is normal.)

Insufficient heating

Go to Trouble Diagnosis Procedure for Insufficient Heating.

HAC-109, "Inspection proce-

dure"

No warm air comes out.
(Air flow volume is normal.)

Noise

Go to Trouble Diagnosis Procedure for Noise.

HAC-112, "Inspection proce-

dure"

Memory function does not operate.

Go to Trouble Diagnosis Procedure for Memory Function.

HAC-114, "Inspection proce-

dure"

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.

Refer to 

HA-30, "Inspection"

.

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 

HA-30, "Inspection"

.

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

HA-28, "Performance Chart"

.

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

Pressure"

.

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

HAC-42, "DTC Logic"

 or 

HAC-43, "DTC Logic"

. 

Is any DTC No. displayed?

YES

>> Perform the diagnosis that is applicable to the sensor and the door motor. Refer to 

HAC-103,

"DTC Index"

. 

NO

>> GO TO 6.

6.

CHECK WITH ACTIVE TEST OF CONSULT-III

Revision: 2008 October

2009 Murano