Nissan Murano Z50 (2005 year). Manual — part 9
TROUBLE DIAGNOSIS
ATC-105
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ATC
Revision: 2005 August
2005 Murano
COMPONENT INSPECTION
Sunload Sensor
Measure voltage between unified meter and A/C amp. harness con-
nector M51 terminal 50 (O) and ground.
●
When checking sunload sensor, select a place where sun shines directly on it.
If NG, replace sunload sensor.
RJIA1807E
SHA930E
ATC-106
TROUBLE DIAGNOSIS
Revision: 2005 August
2005 Murano
Intake Sensor Circuit
AJS00114
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor is located on the heater & cooling unit assembly. It
converts temperature of air after it passes through the evaporator
into a resistance value which is then input to the unified meter and A/
C amp.
DIAGNOSIS PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted. (24 or
−
24 is
indicated on unified meter and A/C amp. as a result of performing
self-diagnosis STEP-2.)
1.
CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1.
Disconnect intake sensor connector.
2.
Turn ignition switch ON.
3.
Check voltage between intake sensor harness connector M256
terminal 1 (R/W) and ground.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 4.
2.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Check continuity between intake sensor harness connector
M256 terminal 2 (B/Y) and unified meter and A/C amp. harness
connector M51 terminal 49 (B/Y).
OK or NG
OK
>> GO TO 3.
NG
>> Repair harness or connector.
RJIA1808E
RJIA1458E
1 – Ground
: Approx. 5 V
RJIA1809E
2 – 49
: Continuity should exist.
RJIA1810E
TROUBLE DIAGNOSIS
ATC-107
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Revision: 2005 August
2005 Murano
3.
CHECK INTAKE SENSOR
Refer to
OK or NG
OK
>> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis
ATC-49, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG
>> 1. Replace intake sensor.
2. Go to self-diagnosis
ATC-49, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
4.
CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND UNIFIED METER AND A/C AMP.
1.
Turn ignition switch OFF.
2.
Disconnect unified meter and A/C amp. connector.
3.
Check continuity between intake sensor harness connector
M256 terminal 1 (R/W) and unified meter and A/C amp. harness
connector M51 terminal 41 (R/Y).
4.
Check continuity between intake sensor harness connector
M256 terminal 1 (R/W) and ground.
OK or NG
OK
>> 1. Replace unified meter and A/C amp.
2. Go to self-diagnosis
ATC-49, "FUNCTION CONFIRMATION PROCEDURE"
and perform self-
diagnosis STEP-2. Confirm that code No. 20 is displayed.
NG
>> Repair harness or connector.
COMPONENT INSPECTION
Intake Sensor
After disconnecting intake sensor connector M256, measure resis-
tance between terminals 1 (R/W) and 2 (B/Y) at sensor side, using
the table below.
If NG, replace intake sensor.
1 – 41
: Continuity should exist.
1 – Ground
: Continuity should not exist.
RJIA1811E
Temperature
°
C (
°
F)
Resistance k
Ω
−
15 (5)
18.63
−
10 (14)
14.14
−
5 (23)
10.85
0 (32)
8.40
5 (41)
6.57
10 (50)
5.18
15 (59)
4.12
20 (68)
3.30
25 (77)
2.66
30 (86)
2.16
35 (95)
1.77
40 (104)
1.46
45 (113)
1.21
RJIA1812E
ATC-108
CONTROLLER
Revision: 2005 August
2005 Murano
CONTROLLER
PFP:27500
Removal and Installation of A/C and AV Switch
AJS000ZN
REMOVAL
Refer to
AV-69, "Removal and Installation for A/C and AV Switch"
INSTALLATION
Installation is basically the reverse order of removal.
AUTO AMP
ATC-109
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ATC
Revision: 2005 August
2005 Murano
AUTO AMP
PFP:27760
Removal and Installation of Unified Meter and A/C Amp.
AJS000ZP
REMOVAL
1.
AV-67, "Removal and Installation of Audio Unit"
.
2.
Remove mounting screws, and then remove unified meter and
A/C amp.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA1813E
ATC-110
AMBIENT SENSOR
Revision: 2005 August
2005 Murano
AMBIENT SENSOR
PFP:27722
Removal and Installation
AJS000ZR
REMOVAL
1.
Remove ambient sensor from bracket.
2.
Disconnect ambient sensor connector, and then remove ambi-
ent sensor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA3971E
IN-VEHICLE SENSOR
ATC-111
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ATC
Revision: 2005 August
2005 Murano
IN-VEHICLE SENSOR
PFP:27720
Removal and Installation
AJS000ZS
REMOVAL
1.
Remove instrument driver lower panel. Refer to
IP-11, "Removal and Installation"
2.
Remove mounting screw, and then remove in-vehicle sensor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA1814E
ATC-112
SUNLOAD SENSOR
Revision: 2005 August
2005 Murano
SUNLOAD SENSOR
PFP:27721
Removal and Installation
AJS000ZT
REMOVAL
1.
Remove instrument mask (right side). Refer to
IP-11, "Removal and Installation"
.
2.
Disconnect sunload sensor connector, and then remove sunload
sensor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA1806E
INTAKE SENSOR
ATC-113
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ATC
Revision: 2005 August
2005 Murano
INTAKE SENSOR
PFP:27723
Removal and Installation
AJS000ZU
REMOVAL
1.
Remove low-pressure pipe 2 and high-pressure pipe 2. Refer to
ATC-143, "Removal and Installation of
Low-pressure Pipe 2 and High-pressure Pipe 2"
.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such as vinyl tape to avoid the entry air.
2.
Slide evaporator to passenger side, and then remove intake
sensor.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
●
Replace O-rings of A/C piping with new ones, and then apply compressor oil to it when installing
it.
●
Mark the mounting position of intake sensor bracket prior to removal so that the reinstalled sen-
sor can be located in the same position.
●
Connection point for female-side piping is thin. So, when inserting male-side piping, take care not
to deform female-side piping. Slowly insert in axial direction.
●
Insert one-touch joint connection point securely until it clicks.
●
After piping has been connected, pull male-side piping by hand to make sure piping does not
come off.
●
When recharging refrigerant, check for leaks.
RJIA1808E
ATC-114
BLOWER UNIT
Revision: 2005 August
2005 Murano
BLOWER UNIT
PFP:27200
Removal and Installation
AJS000ZV
REMOVAL
1.
Remove instrument passenger lower panel. Refer to
IP-11, "Removal and Installation"
.
2.
Remove ECM with bracket attached.
3.
Disconnect intake door motor connector and blower fan motor
connector.
4.
Remove mounting nuts, bolts and screw, and then remove
blower unit.
5.
Remove harness clips from blower unit.
6.
Remove blower unit.
CAUTION:
Move blower unit rightward, and remove locating pin (1
part) and joint. Then remove blower unit downward.
INSTALLATION
Installation is basically the reverse order of removal.
CAUTION:
Make sure locating pin (1 part) and joint are securely inserted.
RJIA1818E
RJIA1819E
BLOWER UNIT
ATC-115
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ATC
Revision: 2005 August
2005 Murano
Disassembly and Assembly
AJS000ZW
CAUTION:
If retaining tabs are damaged while disassembling blower unit,
use 7 screws (27111-2Y000) to assemble blower unit.
1.
Intake adapter
2.
Intake box case
3.
Intake upper case
4.
Intake lower case
5.
Blower fan motor assembly
6.
Intake door motor
7.
In-cabin microfilter
8.
Filter cover
9.
Intake door 2
10. Intake door 1
11.
Intake door lever 1
12. Intake door link
13. Intake door lever 2
RJIA1820E
RJIA1821E
ATC-116
BLOWER UNIT
Revision: 2005 August
2005 Murano
Removal and Installation of Blower Duct
AJS001S7
REMOVAL
1.
Remove instrument panel assembly. Refer to
IP-11, "Removal and Installation"
2.
Remove blower unit. Refer to
.
3.
Remove mounting nuts, and then remove blower duct.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA4001E
BLOWER MOTOR
ATC-117
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ATC
Revision: 2005 August
2005 Murano
BLOWER MOTOR
PFP:27226
Removal and Installation
AJS000ZX
REMOVAL
1.
Remove instrument passenger lower panel. Refer to
IP-11, "Removal and Installation"
.
2.
Disconnect blower motor connector.
3.
Remove mounting screws, and then remove blower motor.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA1822E
ATC-118
INTAKE DOOR MOTOR
Revision: 2005 August
2005 Murano
INTAKE DOOR MOTOR
PFP:27730
Removal and Installation
AJS000ZY
REMOVAL
1.
Remove blower unit. Refer to
.
2.
Remove mounting screws, and then remove intake door motor
from blower unit.
INSTALLATION
Installation is basically the reverse order of removal.
RJIA1823E
IN-CABIN MICROFILTER
ATC-119
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ATC
Revision: 2005 August
2005 Murano
IN-CABIN MICROFILTER
PFP:27277
Removal and Installation
AJS000ZZ
FUNCTION
Air inside passenger compartment is kept clean at either recircula-
tion or fresh mode by installing in-cabin microfilter into blower unit.
REPLACEMENT TIMING
Replace in-cabin microfilter.
Refer to
MA-8, "CHASSIS AND BODY MAINTENANCE"
in Schedule 1 and
in Schedule 2.
Caution label is fixed inside glove box.
REPLACEMENT PROCEDURES
1.
Remove instrument passenger lower panel. Refer to
IP-11, "Removal and Installation"
.
2.
Remove filter cover, and then remove in-cabin microfilter.
3.
Take out in-cabin microfilter from blower unit.
4.
Replace with new one and reinstall on blower unit.
5.
Reinstall glove box.
RJIA1331E
RJIA1824E
ATC-120
HEATER & COOLING UNIT ASSEMBLY
Revision: 2005 August
2005 Murano
HEATER & COOLING UNIT ASSEMBLY
PFP:27110
Removal and Installation
AJS00100
REMOVAL
1.
Use a refrigerant collecting equipment (for HFC-134a) to discharge the refrigerant.
2.
Drain coolant from cooling system. Refer to
CO-9, "Changing Engine Coolant"
3.
Remove cowl top cover. Refer to
4.
Disconnect evaporator-side one-touch joints.
a.
Set a disconnector [high-pressure side (SST: 9253089908), low-
pressure side (SST: 9253089916)] on A/C piping.
b.
Slide a disconnector toward vehicle front until it clicks.
c.
Slide A/C piping toward vehicle front and disconnect it.
CAUTION:
Cap or wrap the joint of the pipe with suitable material such
as vinyl tape to avoid the entry of air.
5.
Remove clamps, and then disconnect two heater hoses from
heater core.
6.
Remove instrument panel assembly. Refer to
IP-11, "Removal and Installation"
7.
Remove blower unit. Refer to
.
8.
Remove clips of vehicle harness from steering member.
9.
Remove mounting nuts, and then remove instrument stays
(driver side and passenger side).
10. Remove mounting bolts from heater & cooling unit.
11. Remove rear ventilator duct 1 and front floor duct. Refer to
129, "Removal of Rear Ventilator Ducts"
and
.
RJIA1815E
RJIA1825E
RJIA1826E
RJIA1828E
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