Nissan Qashqai J11. Manual — part 1139
HAC-192
< BASIC INSPECTION >
[MANUAL AIR CONDITIONING]
DOOR MOTOR STARTING POSITION RESET
DOOR MOTOR STARTING POSITION RESET
Description
INFOID:0000000010432527
• Step motors are used for the mode door motor air mix door motor, and intake door motor.
• Because the step motors do not have position detection mechanisms, there may be a deviation between the
door position recognized by A/C amp. and the actual door position.
Therefore, A/C amp. performs motor zero position reset for aligning its recognized door position with the
actual door position.
• The reset signal is transmitted from A/C amp. to the air mix door motor, mode door motor, and intake door
motor, which then perform zero position reset.
• After any of the following conditions is met, A/C amp. performs motor zero position reset when the ignition
switch is next turned ON.
- The ignition switch is turned from ON to OFF a total of 360 times.
- The ignition switch turns OFF while the mode door motor, air mix door motor, or intake door motor is operat-
ing.
• If A/C amp., air mix door motor, mode door motor, or intake door motor is removed, it is necessary to perform
motor zero position reset using CONSULT.
Work Procedure
INFOID:0000000010432528
1.
PERFORM DOOR MOTOR STARTING POSITION RESET
With CONSULT
1.
Turn ignition switch ON.
2.
Select “Door Motor Starting Position Reset” in “WORK SUPPORT” mode of “HVAC” using CONSULT.
3.
Touch “Start” and wait 10 seconds.
4.
Make sure the “COMPLETED” is displayed on CONSULT screen.
>> INSPECTION END
U1000 CAN COMM CIRCUIT
HAC-193
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
H
J
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M
A
B
HAC
N
O
P
DTC/CIRCUIT DIAGNOSIS
U1000 CAN COMM CIRCUIT
Description
INFOID:0000000010432529
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-board mul-
tiplex communication line with high data communication speed and excellent error detection ability. A modern
vehicle is equipped with many ECMs, and each control unit shares information and links with other control
units during operation (not independent). In CAN communication, 2 control units are connected with 2 commu-
nication lines (CAN-L line and CAN-H line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Refer to
LAN-56, "CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart"
communication signal.
DTC Logic
INFOID:0000000010432530
DTC DETECTION LOGIC
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-193, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010432531
1.
CHECK CAN COMMUNICATION SYSTEM
Check CAN communication system. Refer to
LAN-28, "Trouble Diagnosis Flow Chart"
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U1000
CAN COMM CIRCUIT
(CAN COMM CIRCUIT)
When A/C amp. is not transmitting or receiving CAN communication signal for
2 seconds or more.
HAC-194
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000010432532
Initial diagnosis of A/C amp.
DTC Logic
INFOID:0000000010432533
DTC DETECTION LOGIC
POSSIBLE CAUSE
A/C amp. (CAN communication function malfunction)
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM SELF-DIAGNOSIS
With CONSULT
1.
Turn ignition switch ON and wait for 2 seconds or more.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-194, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010432534
1.
REPLACE A/C AMP.
Replace A/C amp. Refer to
HAC-226, "Removal and Installation"
.
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
U1010
CONTROL UNIT(CAN)
[CONTROL UNIT(CAN)]
When detecting error during the initial diagnosis of CAN controller of A/C amp.
B24A4 INTAKE SENSOR
HAC-195
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
D
E
F
G
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A
B
HAC
N
O
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B24A4 INTAKE SENSOR
DTC Logic
INFOID:0000000010499386
DTC DETECTION LOGIC
POSSIBLE CAUSE
[CIRCUIT SHORT TO GROUND]
• Intake sensor
• A/C amp.
• Harness or connectors (The sensor circuit is shorted to ground.)
[CIRC SHORT TO BATT OR OPEN]
• Intake sensor
• A/C amp.
• Harness or connectors (The sensor circuit is open or shorted to battery.)
FAIL-SAFE
—
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” mode of “HVAC” using CONSULT.
3.
Check DTC.
Is DTC detected?
YES
>> Refer to
HAC-195, "Diagnosis Procedure"
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010499387
NOTE:
The intake sensor cannot be reused. If the intake sensor harness connector is disconnected, sensor must be
replaced.
1.
CHECK INTAKE SENSOR SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between A/C amp. harness connector and ground
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
B24A4
INTAKE SENSOR
(Intake sensor)
[CIRCUIT SHORT TO GROUND]
The intake sensor recognition temperature is
too low [less than
−
44
°
C (
−
47
°
F)].
[CIRC SHORT TO BATT OR OPEN]
The intake sensor recognition temperature is
too high [more than 100
°
C (212
°
F)].
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