Qashqai J11. Heater & Air conditioning Control System - part 5

AUTOMATIC AIR CONDITIONING SYSTEM

HAC-65

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

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JRIWC4088GB

HAC-66

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

AUTOMATIC AIR CONDITIONING SYSTEM

JRIWC4089GB

AUTOMATIC AIR CONDITIONING SYSTEM

HAC-67

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

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JRIWC4090GB

HAC-68

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

AUTOMATIC AIR CONDITIONING SYSTEM

JRIWC4091GB

AUTOMATIC AIR CONDITIONING SYSTEM

HAC-69

< WIRING DIAGRAM >

[AUTOMATIC AIR CONDITIONING]

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JRIWC4092GB

HAC-70

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010432190

OVERALL SEQUENCE

DETAILED FLOW

JMIIA2097GB

DIAGNOSIS AND REPAIR WORK FLOW

HAC-71

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

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1.

GET INFORMATION FOR SYMPTOM

1.

Get detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurs).

2.

Check operation condition of the function that is malfunctioning.

>> GO TO 2.

2.

CHECK DTC

1.

Check DTC.

2.

Perform the following procedure if DTC is detected.

-

Record DTC and freeze frame data (Print them out using CONSULT.)

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3.

Check related service bulletins for information.

Are any symptoms described and any DTC detected?

Symptom is described, DTC is detected>>GO TO 3.
Symptom is described, DTC is not detected>>GO TO 4.
Symptom is not described, DTC is detected>>GO TO 7.

3.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 7.

4.

CONFIRM THE SYMPTOM

Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom.
Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

5.

SELF-DIAGNOSIS WITH ON BOARD DIAGNOSIS SYSTEM

Perform the self-diagnosis with on board diagnosis. Check that whether malfunction result is detected or not.

Is malfunction result detected?

YES

>> GO TO 6.

NO

>> GO TO 8.

6.

TROUBLE DIAGNOSIS BY MALFUNCTION

Perform the trouble diagnosis for the detected malfunction result. Specify the malfunctioning part.

>> GO TO 9.

7.

PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC CONFIRMATION PROCEDURE for the detected DTC, and then check that DTC is detected
again. At this time, always connect CONSULT to the vehicle, and check self diagnostic results in real time.
If two or more DTCs are detected, refer to DTC INSPECTION PRIORITY CHART, and determine trouble diag-
nosis order.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service

Manual. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.

Is DTC detected?

HAC-72

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

DIAGNOSIS AND REPAIR WORK FLOW

YES

>> GO TO 9.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

8.

DETECT MALFUNCTIONING SYSTEM BY SYMPTOM DIAGNOSIS

Detect malfunctioning system according to SYMPTOM DIAGNOSIS based on the confirmed symptom in step
4, and determine the trouble diagnosis order based on possible causes and symptom.
Is the symptom described?

YES

>> GO TO 9.

NO

>> Monitor input data from related sensors or check voltage of related module terminals using CON-

SULT.

9.

DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE

Inspect according to Diagnosis Procedure of the system.
Is malfunctioning part detected?

YES

>> GO TO 10.

NO

>> Check according to 

GI-44, "Intermittent Incident"

.

10.

REPAIR OR REPLACE THE MALFUNCTIONING PART

1.

Repair or replace the malfunctioning part.

2.

Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.

3.

Check DTC. If DTC is detected, erase it.

>> GO TO 11.

11.

FINAL CHECK

When DTC is detected in step 2, perform DTC CONFIRMATION PROCEDURE again, and then check that the
malfunction is repaired securely.
When symptom is described by the customer, refer to confirmed symptom in step 3 or 4, and check that the
symptom is not detected.
Is DTC detected and does symptom remain?

YES-1 >> DTC is detected: GO TO 9.
YES-2 >> Symptom remains: GO TO 4.
NO

>> Before returning the vehicle to the customer, always erase DTC.

OPERATION INSPECTION

HAC-73

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

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OPERATION INSPECTION

Work Procedure

INFOID:0000000010432191

DESCRIPTION

The purpose of the operation inspection is to check that the individual system operates normally. 

OPERATION INSPECTION

For Europe and Russia

1.

CHECK MEMORY FUNCTION

1.

Press AUTO switch to activate air conditioning.

2.

Set temperature to 30.0

°

C by operating temperature control dial (driver side).

3.

Press ON·OFF switch.

4.

Turn ignition switch OFF.

5.

Turn ignition switch ON.

6.

Press AUTO switch.

7.

Check that the set temperature (30.0

°

C) is maintained.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 10.

2.

CHECK FAN SPEED

1.

Start engine.

2.

Operate fan switch and check that fan speed changes.

3.

Check operation for all fan speeds.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 10.

3.

CHECK AIR OUTLET

1.

Operate fan switch to set the fan speed to maximum speed.

2.

Operate MODE VENT/FOOT/DEF switch and MAX DEF switch.

3.

Check that air outlets change according to each indicated air outlet by placing a hand in front of the out-
lets.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 10.

4.

CHECK AIR INLET

1.

Press INTAKE switch to set the air inlet to recirculation. The INTAKE switch indicator turns ON.

2.

Listen to intake sound and confirm air inlets change.

3.

Press INTAKE switch again to set the air inlet to fresh air intake. The INTAKE switch indicator turns OFF.

4.

Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 10.

5.

CHECK COMPRESSOR

1.

Press A/C switch. The A/C switch indicator turns ON.

2.

Check visually and by sound that the compressor operates.

3.

Press A/C switch again. The A/C switch indicator turns OFF.

4.

Check that compressor stops.

Is the inspection result normal?

YES

>> GO TO 6.

Check condition

: Engine running at normal operating temperature.

HAC-74

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION INSPECTION

NO

>> GO TO 10.

6.

CHECK DISCHARGE AIR TEMPERATURE

1.

Operate temperature control dial (driver side).

2.

Check that discharge air temperature (driver side) changes.

3.

Operate temperature control dial (passenger side). DUAL switch indicator turns ON.

4.

Check that discharge air temperature (passenger side) changes.

5.

Press DUAL switch. DUAL switch indicator turns OFF.

6.

Check that air temperature setting (LH/RH) is unified to the driver side temperature setting.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 10.

7.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate compressor.

2.

Operate temperature control dial (driver side) to lower the set temperature to 16.0

°

C.

3.

Check that cool air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 10.

8.

CHECK TEMPERATURE INCREASE

1.

Warm up engine to the normal operating temperature.

2.

Operate temperature control dial (driver side) to raise the set temperature to 30.0

°

C.

3.

Check that warm air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 10.

9.

CHECK AUTO MODE

1.

Press AUTO switch and check that AUTO” indicator turns ON.

2.

Operate temperature control dial (driver side) to check that fan speed or air outlet changes (the air outlet
or fan speed varies depending on the ambient temperature, in-vehicle temperature, set temperature, and
etc.).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 10.

10.

CHECK SELF-DIAGNOSIS WITH ON BOARD DIAGNOSIS SYSTEM

1.

Perform self-diagnosis with on board diagnosis.

2.

Check that any whether malfunction result is detected.

Is any malfunction result detected?

YES

>> Refer to 

HAC-45, "Diagnosis Description"

 and perform the appropriate diagnosis.

NO

>> GO TO 11.

11.

CHECK SELF-DIAGNOSIS WITH CONSULT

1.

Perform self-diagnosis with CONSULT.

2.

Check that any DTC is detected.

Is any DTC detected?

YES

>> Refer to 

HAC-53, "DTC Index"

, and perform the appropriate diagnosis.

NO

>> GO TO 12.

12.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to 

HAC-53, "Fail-safe"

.

>> Refer to 

HAC-121, "Symptom Table"

, and perform the appropriate diagnosis.

Except For Europe and Russia

OPERATION INSPECTION

HAC-75

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

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1.

CHECK MEMORY FUNCTION

1.

Press AUTO switch to activate air conditioning.

2.

Set temperature to 32.0

°

C by operating temperature control dial (driver side).

3.

Press ON·OFF switch.

4.

Turn ignition switch OFF.

5.

Turn ignition switch ON.

6.

Press AUTO switch.

7.

Check that the set temperature (32.0

°

C) is maintained.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 10.

2.

CHECK FAN SPEED

1.

Start engine.

2.

Operate fan switch and check that fan speed changes.

3.

Check operation for all fan speeds.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 10.

3.

CHECK AIR OUTLET

1.

Operate fan switch to set the fan speed to maximum speed.

2.

Operate MODE switch and DEF switch.

3.

Check that air outlets change according to each indicated air outlet by placing a hand in front of the out-
lets.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 10.

4.

CHECK AIR INLET

1.

Press REC switch to set the air inlet to recirculation. The REC switch indicator turns ON.

2.

Listen to intake sound and confirm air inlets change.

3.

Press FRE switch again to set the air inlet to fresh air intake. The FRE switch indicator turns ON.

4.

Listen to intake sound and confirm air inlets change.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 10.

5.

CHECK COMPRESSOR

1.

Press A/C switch. The A/C switch indicator turns ON.

2.

Check visually and by sound that the compressor operates.

3.

Press A/C switch again. The A/C switch indicator turns OFF.

4.

Check that compressor stops.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 10.

6.

CHECK DISCHARGE AIR TEMPERATURE

1.

Operate temperature control dial (driver side).

2.

Check that discharge air temperature (driver side) changes.

3.

Operate temperature control dial (passenger side). DUAL switch indicator turns ON.

4.

Check that discharge air temperature (passenger side) changes.

5.

Press DUAL switch. DUAL switch indicator turns OFF.

6.

Check that air temperature setting (LH/RH) is unified to the driver side temperature setting.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 10.

HAC-76

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

OPERATION INSPECTION

7.

CHECK WITH TEMPERATURE SETTING LOWERED

1.

Operate compressor.

2.

Operate temperature control dial (driver side) to lower the set temperature to 18.0

°

C.

3.

Check that cool air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 10.

8.

CHECK TEMPERATURE INCREASE

1.

Warm up engine to the normal operating temperature.

2.

Operate temperature control dial (driver side) to raise the set temperature to 32.0

°

C.

3.

Check that warm air blows from the air outlets.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 10.

9.

CHECK AUTO MODE

1.

Press AUTO switch and check that AUTO” indicator turns ON.

2.

Operate temperature control dial (driver side) to check that fan speed or air outlet changes (the air outlet
or fan speed varies depending on the ambient temperature, in-vehicle temperature, set temperature, and
etc.).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 10.

10.

CHECK SELF-DIAGNOSIS WITH ON BOARD DIAGNOSIS SYSTEM

1.

Perform self-diagnosis with on board diagnosis.

2.

Check that any whether malfunction result is detected.

Is any malfunction result detected?

YES

>> Refer to 

HAC-45, "Diagnosis Description"

 and perform the appropriate diagnosis.

NO

>> GO TO 11.

11.

CHECK SELF-DIAGNOSIS WITH CONSULT

1.

Perform self-diagnosis with CONSULT.

2.

Check that any DTC is detected.

Is any DTC detected?

YES

>> Refer to 

HAC-53, "DTC Index"

, and perform the appropriate diagnosis.

NO

>> GO TO 12.

12.

CHECK FAIL-SAFE ACTIVATION

Check that symptom is applied to the fail-safe activation. Refer to 

HAC-53, "Fail-safe"

.

>> Refer to 

HAC-121, "Symptom Table"

, and perform the appropriate diagnosis.

SYSTEM SETTING

HAC-77

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

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SYSTEM SETTING

Temperature Setting Trimmer

INFOID:0000000010432192

DESCRIPTION

If the temperature felt by the customer is different from the air flow temperature controlled by the temperature
setting, the A/C auto amp. control temperature can be adjusted to compensate for the temperature setting.

HOW TO SET

With CONSULT

Perform “TEMP SET CORRECT” of HVAC work support item. 

NOTE:
• When 

−

3.0

°

C is corrected on the temperature setting set as 25.0

°

C the temperature controlled by A/C auto

amp. is 25.0

°

C 

−

 

−

3.0

°

C = 22.0

°

C and the temperature becomes lower than the temperature setting. 

• A/C auto amp. stores the setting at the time 1 minute after the ignition switch turns OFF.
• When the battery cable is disconnected from the negative terminal or when the battery voltage is 10 V or

less, the setting for the difference between the set temperature and control temperature is set to the value
stored 1 minute after most recent ignition switch OFF status.

Inlet Port Memory Function (REC)

INFOID:0000000010432193

DESCRIPTION

• If the ignition switch is turned to the OFF position while the INTAKE switch is set to ON (recirculation), “Per-

form the memory” or “Do not perform the memory” of INTAKE switch ON (recirculation) condition can be
selected. 

• If “Perform the memory” was set, the INTAKE switch will be ON (recirculation) when turning the ignition

switch to the ON position again. 

• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-

tion switch to the ON position again. 

HOW TO SET

With CONSULT

Perform the “REC MEMORY SET” of HVAC work support item. 

NOTE:
• A/C auto amp. stores the setting at the time 1 minute after the ignition switch turns OFF.

Work support items

Display (

°

C)

TEMP SET CORRECT

3.0

2.5

2.0

1.5

1.0

0.5

0 (initial status)

−

0.5

−

1.0

−

1.5

−

2.0

−

2.5

−

3.0

Work support items

Display

Setting

REC MEMORY SET

WITHOUT (initial status)

Perform the memory of manual REC

WITH

Do not perform the memory of manual REC (auto control)

HAC-78

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

SYSTEM SETTING

• When the battery cable is disconnected from the negative terminal or when the battery voltage is 10 V or

less, the setting for the difference between the set temperature and control temperature is set to the value
stored 1 minute after most recent ignition switch OFF status.

Inlet Port Memory Function (FRE)

INFOID:0000000010432194

DESCRIPTION

• If the ignition switch is turned to the OFF position while the INTAKE switch is set to OFF (fresh air intake),

“Perform the memory” or “Do not perform the memory” of INTAKE switch OFF (fresh air intake) condition can
be selected. 

• If “Perform the memory” was set, the INTAKE switch will be OFF (fresh air intake) when turning the ignition

switch to the ON position again. 

• If “Do not perform the memory” was set, the air inlets will be controlled automatically when turning the igni-

tion switch to the ON position again. 

HOW TO SET

With CONSULT

Perform the “FRE MEMORY SET” of HVAC work support item. 

NOTE:
• A/C auto amp. stores the setting at the time 1 minute after the ignition switch turns OFF.
• When the battery cable is disconnected from the negative terminal or when the battery voltage is 10 V or

less, the setting for the difference between the set temperature and control temperature is set to the value
stored 1 minute after most recent ignition switch OFF status.

Setting of Target Evaporator Temperature Upper Limit Value

INFOID:0000000010432195

DESCRIPTION

Setting of upper limit value of target evaporator temperature can be changed. Control characteristic of com-
pressor control (refrigerant discharge amount control) changes according to change of the setting, and then
operation ratio of compressor and refrigerant discharge amount are changed. According to change of the set-
ting, control characteristic focusing on the fuel consumption can be adjusted to control characteristic focusing
on the cooling capacity.

HOW TO SET

With CONSULT

Perform “TARGET EVAPORATOR TEMP UPPER LIMIT SETTING” in “WORK SUPPORT” mode of “HVAC”
using CONSULT.

Work support items

Display

Setting

FRE MEMORY SET

WITHOUT (initial status)

Perform the memory of manual FRE

WITH

Do not perform the memory of manual FRE (auto control)

Work support items

Display

Setting

TARGET EVAPORATOR TEMP UPPER 
LIMIT SETTING

Initial setting

Initial setting

High

Setting 1

Middle

Setting 2

Low

Setting 3

Setting

Target evapora-

tor temperature 

upper limit value

Evaporator freezing protection control

Refrigerant discharge amount control

Initial set-

ting

12

°

C (54

°

F)

Initial setting

Initial setting

Setting 1

7

°

C (45

°

F)

Operation ratio of compressor increases from ini-

tial setting.

Refrigerant discharge amount increases from 

initial setting.

SYSTEM SETTING

HAC-79

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

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NOTE:
• A/C auto amp. stores the setting at the time 1 minute after the ignition switch turns OFF.
• When the battery cable is disconnected from the negative terminal or when the battery voltage is 10 V or

less, the setting for the difference between the set temperature and control temperature is set to the value
stored 1 minute after most recent ignition switch OFF status.

Setting 2

5

°

C (41

°

F)

Operation ratio of compressor increases from ini-

tial setting 1.

Refrigerant discharge amount increases from 

initial setting 1.

Setting 3

3

°

C (37

°

F)

Operation ratio of compressor increases from 

setting 2.

Refrigerant discharge amount increases from 

setting 2.

Setting

Target evapora-

tor temperature 

upper limit value

Evaporator freezing protection control

Refrigerant discharge amount control

HAC-80

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONING]

DOOR MOTOR STARTING POSITION RESET

DOOR MOTOR STARTING POSITION RESET

Description

INFOID:0000000010432196

• Step motors are used for the mode door motor air mix door motor (driver side/passenger side), 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 auto amp. and the actual door position.
Therefore, A/C auto 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 auto amp. to the air mix door motor (driver side/passenger side),

mode door motor, and intake door motor, which then perform zero position reset.

• After any of the following conditions is met, A/C auto amp. performs motor zero position reset when the igni-

tion switch is next turned ON.

- The battery terminal is disconnected and then reconnected.
- The travel distance reaches 3,000 km (1864 miles). [Performed every 3,000 km (1864 miles).]
• If A/C auto amp., air mix door motor (driver side, passenger side), mode door motor, or intake door motor is

removed, it is necessary to perform motor zero position reset using CONSULT.

Work Procedure

INFOID:0000000010432197

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