Nissan Murano. Manual — part 853
HAC-186
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
Description
INFOID:0000000009722181
COMPONENT DESCRIPTION
Air Mix Door Motor (Passenger Side)
• The air mix door motor (passenger side) (1) are attached to the
heater & cooling unit assembly.
• It rotates so that the air mix door is opened or closed to a position
set by the A/C auto amp.
• Motor rotation is then conveyed through a shaft and the air mix
door position feedback is then sent to the A/C auto amp. by PBR
built-in air mix door motor.
DTC Logic
INFOID:0000000009722182
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
1.
Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2.
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
Is DTC No.“B2634” or “B2635” displayed?
YES
>> Perform trouble diagnosis for the air mix door motor (passenger side). Refer to
.
NO
>> GO TO 2.
2.
FUNCTION INSPECTION
1.
Press temperature control “UP” dial (passenger side) until 32
°
C (90
°
F) is displayed.
2.
Check for warm air at discharge air outlets.
3.
Operate the compressor.
4.
Press temperature control “DOWN” dial (passenger side) until 18
°
C (60
°
F) is displayed.
5.
Check for cool air at air discharge outlets.
Does it operate normally?
YES
>> END.
NO
>> Check air mix door motor (passenger side) installation, and repair or replace the malfunctioning
parts.
:
Vehicle front
JPIIA0526ZZ
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2634
PASS AIR MIX DOOR MOT
Air mix door PBR (passenger side) position
95% or less
• Air mix door motor (PBR internal
circuit is open or shorted)
• A/C auto amp.
• Harness and connector
(LAN communication line is open
or shorted)
B2635
Air mix door PBR (passenger side) position
5% or more
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
HAC-187
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Diagnosis Procedure
INFOID:0000000009722183
1.
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.
NO
>> Repair the harnesses or connectors.
2.
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.
NO
>> Repair the harnesses or connectors.
3.
CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect air mix door motor (passenger side) connector.
3.
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).
NO
>> Repair harness or connector.
(+)
(
−
)
Voltage
Air mix door motor (passenger side)
—
Connector
Terminal
M307
1
Ground
Battery voltage
(+)
(
−
)
Voltage
Air mix door motor (passenger side)
—
Connector
Terminal
M307
3
Ground
SJIA1453J
Air mix door motor (passenger side)
—
Continuity
Connector
Terminal
M307
2
Ground
Existed
HAC-188
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
Description
INFOID:0000000009722184
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:0000000009722185
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to
DTC CONFIRMATION PROCEDURE
1.
CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT
1.
Using CONSULT, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2.
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
Is DTC No.“ B2636 ”, “ B2637 ”, “B2638 ”, “B2639 ”, “B2654 ” or “B2655 ” displayed?
YES
>> Perform trouble diagnosis for the mode door motor. Refer to
HAC-189, "Diagnosis Procedure"
.
NO
>> GO TO 2.
2.
FUNCTION INSPECTION
1.
Press MODE switch and DEF switch.
2.
Each position indicator should change shape.
:
Vehicle front
JPIIA0513ZZ
DTC
Items
(CONSULT 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
B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
HAC-189
< DTC/CIRCUIT DIAGNOSIS >
[WITH 7 INCH DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
3.
Confirm that air discharge comes out according to the air distribution table at below. Refer to
.
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
NO
>> Check mode door motor installation, and repair or replace the malfunctioning parts.
Diagnosis Procedure
INFOID:0000000009722186
1.
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.
NO
>> Repair harness or connector.
2.
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
1
Ground
Battery voltage
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