Nissan Murano Z51 (2008 year). Manual

B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)

HAC-59

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

Diagnosis Procedure

INFOID:0000000003441588

CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)

Check voltage between air mix door motor (passenger side) harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair the harnesses or connectors.

CHECK SIGNAL FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)

Check the output waveform (LAN signal) between air mix door motor (passenger side) harness connector and
ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair the harnesses or connectors.

CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect air mix door motor (passenger side) connector.

Check continuity between air mix door motor (passenger side) harness connector and ground.

Is the inspection result normal?

YES

>> Replace air mix door motor (passenger side).

>> Repair harness or connector.

(+)

(

−

)

Voltage

Air mix door motor (passenger side)

—

Connector

Terminal

M307

Ground

Battery voltage

(+)

(

−

)

Voltage

Air mix door motor (passenger side)

—

Connector

Terminal

M307

Ground

SJIA1453J

Air mix door motor (passenger side)

—

Continuity

Connector

Terminal

M307

Ground

Existed

Revision: 2008 October

2009 Murano

HAC-60

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

Description

INFOID:0000000003073050

COMPONENT DESCRIPTION

Mode Door Motor

• The mode door motor (1) are attached to the heater & cooling unit

assembly.

• It rotates so that air is discharged from the outlet set by the A/C

auto amp. Motor rotation is conveyed to a link which activates the
mode door.

DTC Logic

INFOID:0000000003441610

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

42, "DTC Logic"

HAC-43, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is DTC No.“ B2636 ”, “ B2637 ”, “B2638 ”, “B2639 ”, “B2654 ” or “B2655 ” displayed?

YES

>> Perform trouble diagnosis for the mode door motor. Refer to

HAC-61, "Diagnosis Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press MODE switch and DEF switch.

Each position indicator should change shape.

Vehicle front

JPIIA0513ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2636

DR VENT DOOR FAIL

When the malfunctioning door position is
detected at VENT position

• Mode door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN

communication line is open or
shorted)

B2637

DR B/L DOOR FAIL

When the malfunctioning door position is
detected at B/L position

B2638

DR D/F1 DOOR FAIL

When the malfunctioning door position is
detected at FOOT position

B2639

DR DEF DOOR FAIL

When the malfunctioning door position is
detected at DEF position

B2654

D/F2 DOOR FAIL

When the malfunctioning door position is
detected at D/F position

B2655

B/L2 DOOR FAIL

When the malfunctioning door position is
detected at B/L2 position

Revision: 2008 October

2009 Murano

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

HAC-61

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

Confirm that air discharge comes out according to the air distribution table at below. Refer to

HAC-15,

"System Description"

NOTE:
Confirm that the compressor clutch is engaged (Sound or visual inspection) and intake door position is at FRE
when DEF (

) or D/F (

) is selected.

Does it operate normally?

YES

>> INSPECTION END

>> Check mode door motor installation, and repair or replace the malfunctioning parts.

Diagnosis Procedure

INFOID:0000000003073052

CHECK POWER SUPPLY FOR MODE DOOR MOTOR

Check voltage between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR MODE DOOR MOTOR

Confirm A/C LAN signal between mode door motor harness connector and ground using an oscilloscope.

JPIIA0509GB

JPIIA0510GB

(+)

(

−

)

Voltage

Mode door motor

—

Connector

Terminal

M310

Ground

Battery voltage

Revision: 2008 October

2009 Murano

HAC-62

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK MODE DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect mode door motor connector.

Check continuity between mode door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace mode door motor.

>> Repair harness or connector.

(+)

(

−

)

Voltage

Mode door motor

—

Connector

Terminal

M310

Ground

SJIA1453J

Mode door motor

—

Continuity

Connector

Terminal

M310

Ground

Existed

Revision: 2008 October

2009 Murano

B263D, B263E, B263F INTAKE DOOR MOTOR

HAC-63

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

B263D, B263E, B263F INTAKE DOOR MOTOR

Description

INFOID:0000000003073059

COMPONENT DESCRIPTION

Intake Door Motor

• The intake door motor (1) is attached to the blower unit.

• It rotates so that air is drawn from inlets set by the A/C auto amp.

Motor rotation is conveyed to a lever which activates the intake
door.

DTC Logic

INFOID:0000000003443679

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

42, "DTC Logic"

HAC-43, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is DTC No.“B263D”, “B263E” or “B263F” displayed?

YES

>> Perform trouble diagnosis for the intake door motor. Refer to

HAC-64, "Diagnosis Procedure"

>> GO TO 2.

FUNCTION INSPECTION

Press intake switch.

The intake switch indicator is turned ON. (REC position)

Listen for intake door position change (Slight change of blower sound can be heard.).

Press intake switch again.

The intake switch indicator is turned OFF. (FRE position)

Listen for intake door position change (Slight change of blower sound can be heard.).

Does it operate normally?

YES

>> INSPECTION END

>> Check intake door motor installation, and repair or replace the malfunctioning parts.

Vehicle front

JPIIA0516ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B263D

FRE DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at FRE position

• Intake door motor (PBR internal

circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B263E

20P FRE DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at 20%FRE position

B263F

REC DOOR FAIL

When the malfunctioning intake door posi-
tion is detected at REC position

Revision: 2008 October

2009 Murano

HAC-64

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B263D, B263E, B263F INTAKE DOOR MOTOR

Diagnosis Procedure

INFOID:0000000003073061

CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR

Check voltage between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR INTAKE DOOR MOTOR

Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK INTAKE DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect intake door motor connector.

Check continuity between intake door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace intake door motor.

>> Repair harness or connector.

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

Ground

Battery voltage

(+)

(

−

)

Voltage

Intake door motor

—

Connector

Terminal

M304

Ground

SJIA1453J

Intake door motor

—

Continuity

Connector

Terminal

M304

Ground

Existed

Revision: 2008 October

2009 Murano

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

HAC-65

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

Description

INFOID:0000000003278254

COMPONENT DESCRIPTION

Upper Ventilator Door Motor

• The upper ventilator door motor (1) are attached to the heater &

cooling unit assembly.

• Upper ventilator door motor operates by UPPER VENT switch ON/

OFF when the DEF switch is OFF.

• Motor rotation is conveyed to a link which activates the upper ven-

tilator door.

DTC Logic

INFOID:0000000003443900

DTC DETECTION LOGIC

NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to

HAC-

42, "DTC Logic"

HAC-43, "DTC Logic"

DTC CONFIRMATION PROCEDURE

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is DTC No.“B2661”, “B2662” or “B2663” displayed?

YES

>> Perform trouble diagnosis for the upper ventilator door motor. Refer to

HAC-66, "Diagnosis Proce-

dure"

>> GO TO 2.

FUNCTION INSPECTION

Press the UPPER VENT switch.

The UPPER VENT switch indicator is turned ON.

Vehicle front

JPIIA0514ZZ

DTC

Items

(CONSULT-III screen terms)

Diagnostic item is detected when...

Possible cause

B2661

UPPER VENT DOOR OPEN POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at open position.

• Upper ventilator door motor (PBR

internal circuit is open or shorted)

• A/C auto amp.
• Harness and connector (LAN com-

munication line is open or shorted)

B2662

UPPER VENT DOOR MID POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at middle posi-
tion.

B2663

UPPER VENT DOOR SHUT POSI
FAIL

When the malfunctioning upper ventilator
door position is detected at shut position.

Revision: 2008 October

2009 Murano

HAC-66

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

Check that the air blown from UPPER VENT does not greatly deviate from the air mix ratio.

Press the UPPER VENT switch again.

The UPPER VENT switch indicator is turned OFF.

The air blown from UPPER VENT stops.

Does it operate normally?

YES

>> INSPECTION END

>> Check upper ventilator door motor installation, and repair or replace the malfunctioning parts.

Diagnosis Procedure

INFOID:0000000003443944

CHECK POWER SUPPLY FOR UPPER VENTILATOR DOOR MOTOR

Check voltage between upper ventilator door motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair harness or connector.

CHECK SIGNAL FOR UPPER VENTILATOR DOOR MOTOR

Confirm A/C LAN signal between upper ventilator door motor harness connector and ground using an oscillo-
scope.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

JPIIA0509GB

(+)

(

−

)

Voltage

Upper ventilator door motor

—

Connector

Terminal

M51

Ground

Battery voltage

(+)

(

−

)

Voltage

Upper ventilator door motor

—

Connector

Terminal

M51

Ground

SJIA1453J

Revision: 2008 October

2009 Murano

B2661, B2662, B2663 UPPER VENTILATOR DOOR MOTOR

HAC-67

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

CHECK UPPER VENTILATOR DOOR MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Disconnect upper ventilator door motor connector.

Check continuity between upper ventilator door motor harness connector and ground.

Is the inspection result normal?

YES

>> Replace upper ventilator door motor.

>> Repair harness or connector.

Upper ventilator door motor

—

Continuity

Connector

Terminal

M51

Ground

Existed

Revision: 2008 October

2009 Murano

HAC-68

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

BLOWER MOTOR

BLOWER MOTOR

Description

INFOID:0000000003073066

COMPONENT DESCRIPTION

Brush-less Motor

The blower motor utilizes a brush-less motor with a rotating magnet.
Quietness is improved over previous motors where the brush was
the point of contact and the coil rotated.

Blower Motor Circuit

Component Function Check

INFOID:0000000003073067

CHECK OPERATION

Warm up the engine.

Operate the fan control dial. Check that the fan speed and indicator are switched for all fan speeds.

Does it operate normally?

YES

>> INSPECTION END

>> Perform trouble diagnosis for the blower motor. Refer to

HAC-68, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003073068

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is any DTC No. displayed?

YES

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

HAC-103, "DTC

Index"

>> GO TO 2.

CHECK WITH ACTIVE TEST OF CONSULT-III

Using CONSULT-III, perform “HVAC TEST” “ACTIVE TEST” of HVAC to check each output device. Refer
to

HAC-38, "CONSULT-III Function"

NOTE:
Perform the ACTIVE TEST after starting the engine because the compressor is operated.

ZHA152H

JSIIA0999ZZ

Revision: 2008 October

2009 Murano

BLOWER MOTOR

HAC-69

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

Check that the blower motor control signal changes according to each indicator signal.

NOTE:

Perform the inspection of each output device after starting the engine because the compressor is operated.

Does it operate normally?

YES

>> INSPECTION END

>> GO TO 3.

CHECK POWER SUPPLY FOR BLOWER MOTOR

Disconnect blower motor connector.

Turn ignition switch ON.

Check voltage between blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

>> GO TO 7.

CHECK BLOWER MOTOR GROUND CIRCUIT

Turn ignition switch OFF.

Check continuity between blower motor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

>> Repair harness or connector.

CHECK BLOWER MOTOR CIRCUIT CONTINUITY

Disconnect A/C auto amp. connector.

Check continuity between blower motor harness connector and A/C auto amp. harness connector.

Is the inspection result normal?

YES

>> GO TO 6.

Test item

MODE 1

MODE 2

MODE 3

MODE 4

MODE 5

MODE 6

MODE 7

Mode door position

VENT1

VENT2

B/L1

B/L2

FOOT

D/F

DEF

Intake door position

REC

20%FRE

FRE

Air mix door position
(driver & passenger
side)

FULL COLD

FULL HOT

FULL COLD

FULL HOT

Blower motor duty ratio

35%

61%

81%

35%

Compressor (Magnet
clutch)

OFF

Upper ventilator door

OPEN

SHUT

OPEN

SHUT

(+)

(

−

)

Voltage

Blower motor

—

Connector

Terminal

M98

Ground

Battery voltage

Blower motor

—

Continuity

Connector

Terminal

M98

Ground

Existed

Blower motor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M98

M50

Existed

Revision: 2008 October

2009 Murano

HAC-70

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

BLOWER MOTOR

>> Repair harness or connector.

CHECK A/C AUTO AMP. OUTPUT SIGNAL

Reconnect blower motor connector and A/C auto amp. connector.

Turn ignition switch ON.

Set MODE switch to the VENT position.

Check the output waveform between blower motor harness connector and ground using an oscilloscope,
while varying the fan speed from 1 to 7.

Is the inspection result normal?

YES

>> Replace the blower motor.

>> Replace the A/C auto amp.

CHECK POWER VOLTAGE OF BLOWER RELAY

Turn the ignition switch OFF.

Remove the blower relay. Refer to

PG-101, "Fuse, Connector and Terminal Arrangement"

Turn the ignition switch ON.

Check the voltage between blower relay fuse block side terminal and ground. Refer to

PG-101, "Fuse,

Connector and Terminal Arrangement"

for relay terminal assignment.

Is the inspection result normal?

YES

>> GO TO 8.

>> Inspection the power supply circuit. Refer to

PG-59, "Wiring Diagram - IGNITION POWER SUP-

PLY -"

CHECK BLOWER RELAY

Turn the ignition switch OFF.

Install the blower relay. Refer to

PG-101, "Fuse, Connector and Terminal Arrangement"

Turn the ignition switch ON.

Check the operating sound of blower relay.

Is the inspection result normal?

YES

>> GO TO 9.

>> Replace the blower relay.

CHECK FUSE

Check 15A fuses (Nos. 21 and 22).
NOTE:

JPIIA0616GB

(+)

(

−

)

Voltage

Blower relay

—

Ground

Battery voltage

Revision: 2008 October

2009 Murano

BLOWER MOTOR

HAC-71

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

Refer to

PG-101, "Fuse, Connector and Terminal Arrangement"

for fuse location.

Is the inspection result normal?

YES

>> Repair the harnesses or connectors.

>> Replace the fuse after repairing the applicable circuit.

Component Inspection

INFOID:0000000003073069

CHECK BLOWER MOTOR

Remove the blower motor. Refer to

VTL-32, "Exploded View"

Check that the blower motor rotates smoothly.

Is the inspection result normal?

YES

>> INSPECTION END

>> Replace blower motor.

Revision: 2008 October

2009 Murano

HAC-72

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

MAGNET CLUTCH

MAGNET CLUTCH

Description

INFOID:0000000003073070

The magnet clutch drives the compressor, by an IPDM E/R signal.

Component Function Check

INFOID:0000000003073071

FUNCTION INSPECTION

Press AUTO switch.

“AUTO” is indicated on the display.

Press the A/C switch.

Check that the indicator of the A/C switch turns on. Check visually and by sound that the compressor is
operating (the discharge air temperature or fan speed varies depending on the ambient temperature, in-
vehicle temperature, and temperature setting).

Press the A/C switch again.

Check that the indicator of the A/C switch turns OFF. Check visually and by sound that the compressor
stops.

Does it operate normally?

YES

>> INSPECTION END

>> Perform trouble diagnosis for the compressor. Refer to

HAC-72, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000003073072

INSPECTION IN AUTO ACTIVE TEST MODE

Perform “AUTO ACTIVE TEST”. Refer to

PCS-10, "Diagnosis Description"

Does it operate normally?

YES

>> GO TO 5.

>> GO TO 2.

CHECK MAGNET CLUTCH

Turn the ignition switch OFF.

Disconnect the magnet clutch connector.

Directly apply the battery voltage to the magnet clutch. Check for operation visually and by sound.

Does it operate normally?

YES

>> GO TO 3.

>> Replace the compressor.

CHECK MAGNET CLUTCH CIRCUIT CONTINUITY

Turn the ignition switch OFF.

Disconnect IPDM E/R connector.

Check continuity between magnet clutch harness connector and IPDM E/R harness connector.

Is the inspection result normal?

YES

>> GO TO 4.

>> Repair harness or connector.

CHECK FUSE

Check 10A fuse (No. 49).
NOTE:
Refer to

PG-103, "Fuse, Connector and Terminal Arrangement"

for fuse location.

Is the inspection result normal?

YES

>> Replace IPDM E/R.

IPDM E/R

Compressor

Continuity

Connector

Terminal

Connector

Terminal

F12

F18

Existed

Revision: 2008 October

2009 Murano

MAGNET CLUTCH

HAC-73

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

HAC

>> Replace the fuse after repairing the applicable circuit.

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is any DTC No. displayed?

YES

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

HAC-103, "DTC

Index"

>> GO TO 6.

CHECK A/C AUTO AMP. INPUT SIGNAL

Using CONSULT-III, check “On/Off” of “COMP REQ SIG” and “FAN REQ SIG” in “DATA MONITOR” of HVAC.
Refer to

HAC-38, "CONSULT-III Function"

Is the inspection result normal?

YES

>> GO TO 7.

>> Replace A/C auto amp.

CHECK REFRIGERANT PRESSURE SENSOR

Check refrigerant pressure sensor. Refer to

EC-463, "Diagnosis Procedure"

Is the inspection result normal?

YES

>> INSPECTION END

>> Repair or replace malfunctioning parts.

A/C SWITCH ON

: COMP REQ SIG On

A/C SWITCH OFF

: COMP REQ SIG Off

FAN CONTROL DIAL ON

: FAN REQ SIG On

FAN CONTROL DIAL OFF

: FAN REQ SIG Off

Revision: 2008 October

2009 Murano

HAC-74

< COMPONENT DIAGNOSIS >

[WITHOUT 7 INCH DISPLAY]

A/C CONTROL SIGNAL CIRCUIT

A/C CONTROL SIGNAL CIRCUIT

Diagnosis Procedure

INFOID:0000000003597944

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.

Check if any DTC No. is displayed in the self-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"

HAC-43, "DTC Logic"

Is any DTC No. displayed?

YES

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

HAC-103, "DTC

Index"

>> GO TO 2.

CHECK TX (A/C CONTROL

→

A/C AUTO AMP.) CIRCUIT CONTINUITY

Disconnect the A/C control and the A/C auto amp. connector.

Check continuity between A/C control harness connector and A/C auto amp. harness connector.

Check continuity between A/C control harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

>> Repair harness or connector.

CHECK RX (A/C AUTO AMP.

→

A/C CONTROL) CIRCUIT CONTINUITY

Disconnect the A/C control and the A/C auto amp. connector.

Check continuity between A/C control harness connector and A/C auto amp. harness connector.

Check continuity between A/C control harness connector and ground.

Is the inspection result normal?

YES

>> Perform trouble diagnosis for the A/C control. Refer to

HAC-76, "A/C CONTROL : Diagnosis Pro-

cedure"

>> Repair harness or connector.

A/C control

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M95

M50

Existed

A/C control

—

Continuity

Connector

Terminal

M95

Ground

Not existed

A/C control

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M95

M50

Existed

A/C control

—

Continuity

Connector

Terminal

M95

Ground

Not existed

Revision: 2008 October

2009 Murano

Nissan Murano Z51 (2008 year). Manual - part 224