Nissan Maxima. Instruction — part 743
HAC-148
< DTC/CIRCUIT DIAGNOSIS >
[WITH MONOCHROME DISPLAY]
B2632, B2633 AIR MIX DOOR MOTOR (DRIVER SIDE)
NO
>> Check air mix door motor (driver side) installation, and repair or replace the malfunctioning parts.
Refer to
HAC-210, "AIR MIX DOOR MOTOR : Removal and Installation - Air Mix Door Motor
Diagnosis Procedure
INFOID:0000000010051151
Regarding Wiring Diagram information, refer to
HAC-173, "Wiring Diagram - With Monochrome Display"
1.
CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between air mix door motor (driver side) harness
connector M128 terminal 1 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 (DRIVER SIDE)
Check the output waveform (LAN signal) between air mix door motor
(driver side) harness connector M128 terminal 3 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 (DRIVER SIDE) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect air mix door motor (driver side) connector.
3. Check continuity between air mix door motor (driver side) har-
ness connector M128 terminal 2 and ground.
Is the inspection result normal?
YES
>> Replace air mix door motor (driver side). Refer to
210, "AIR MIX DOOR MOTOR : Removal and Installa-
tion - Air Mix Door Motor (Driver Side)"
.
NO
>> Repair harness or connector.
1 - Ground
: Battery Voltage
AWIIA1142ZZ
(+)
(
−)
Voltage
Air mix door motor
(driver side)
—
Connector
Terminal
M128
3
Ground
AWIIA1143ZZ
SJIA1453J
2 - Ground
: Continuity should exist.
AWIIA1144ZZ
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
HAC-149
< DTC/CIRCUIT DIAGNOSIS >
[WITH MONOCHROME DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
Description
INFOID:0000000010051152
COMPONENT DESCRIPTION
Air Mix Door Motor (passenger side)
• The air mix door motor (passenger side) (1) is 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:0000000010051153
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 the temperature control switch (passenger side) until 32
°C (90°F) is displayed.
2. Check for warm air at discharge air outlets.
3. Operate the A/C compressor.
4. Press the temperature control switch (passenger side) until 18
°C (60°F) is displayed.
5. Check for cool air at air discharge outlets.
Does it operate normally?
YES
>> Inspection End.
AWIIA1118ZZ
DTC
Items
(CONSULT screen terms)
Diagnostic item is detected when...
Possible cause
B2634
PASS AIRMIX ACTR (SHORT)
Air mix door PBR (passenger side) position
5% or less
• Air mix door motor (passenger
side)
• A/C auto amp.
• Harness and connector
(CAN communication line is open
or shorted)
(Air mix door motor is open or
shorted)
B2635
PASS AIRMIX ACTR (OPEN)
Air mix door PBR (passenger side) position
95% or more
HAC-150
< DTC/CIRCUIT DIAGNOSIS >
[WITH MONOCHROME DISPLAY]
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
NO
>> Check air mix door motor (passenger side) installation, and repair or replace the malfunctioning
parts. Refer to
HAC-210, "AIR MIX DOOR MOTOR : Removal and Installation - Air Mix Door
Diagnosis Procedure
INFOID:0000000010051154
Regarding Wiring Diagram information, refer to
HAC-173, "Wiring Diagram - With Monochrome Display"
1.
CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY
1. Turn ignition switch ON.
2. Check voltage between air mix door motor (passenger side) harness connector M129 terminal 1 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 M129 terminal 3 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 - Ground
:Battery Voltage
AWIIA1145ZZ
(+)
(
−)
Voltage
Air mix door motor
(passenger side)
—
Connector
Terminal
M129
3
Ground
AWIIA1146ZZ
SJIA1453J
B2634, B2635 AIR MIX DOOR MOTOR (PASSENGER SIDE)
HAC-151
< DTC/CIRCUIT DIAGNOSIS >
[WITH MONOCHROME DISPLAY]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
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 M129 terminal 2 and ground.
Is the inspection result normal?
YES
>> Replace air mix door motor (passenger side). Refer to
HAC-210, "AIR MIX DOOR MOTOR : Removal and
Installation - Air Mix Door Motor (Passenger Side)"
.
NO
>> Repair harness or connector.
2 - Ground
: Continuity should exist.
AWIIA1147ZZ
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