Nissan Qashqai (2007-2010). Manual - part 927

HAC-68

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MAGNET CLUTCH

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace BCM. Refer to 

BCS-64, "Exploded View"

.

10.

CHECK COMPRESSOR ON SIGNAL

1.

Turn ignition switch OFF.

2.

Connect auto amp. harness connector.

3.

Turn ignition switch ON.

4.

Check voltage between auto amp. harness connector M53 terminal 5 and ground.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Replace auto amp.

11.

CHECK REFRIGERANT PRESSURE SENSOR

WITH CONSULT-III

1.

Start the engine.

2.

Check voltage of refrigerant pressure sensor in “DATA MONITOR”. Refer to 

HAC-91, "HR16DE : Refer-

ence Value"

 (HR16DE), 

HAC-92, "MR20DE : Reference Value"

 (MR20DE), 

HAC-92, "K9K : Reference

Value"

 (K9K).

WITHOUT CONSULT-III

1.

Start the engine.

2.

Check voltage between ECM harness connector F8 terminal 41 (With Gasoline Engine) or F68 terminal
78 (With Diesel Engine) and ground.

With Gasoline Engine

With Diesel Engine

Is the inspection result normal?

YES

>> •

WITH CONSULT-III: GO TO 12.

•

WITHOUT CONSULT-III: GO TO 13.

NO

>> Refer to 

EC-316, "Diagnosis Procedure"

 [HR16DE (WITH EURO-OBD)], 

EC-595, "Diagnosis Pro-

cedure"

 [HR16DE (WITHOUT EURO-OBD)], 

EC-936, "Diagnosis Procedure"

 [MR20DE (WITH

EURO-OBD)], 

EC-1215, "Diagnosis Procedure"

 [MR20DE (WITHOUT EURO-OBD)], or 

EC-1380,

"Diagnosis Procedure"

 (K9K).

BCM

—

Voltage

Connector

Terminal

M65

14

Ground

Battery voltage

(+)

(

−

)

Condition

Voltage

Auto amp.

—

 Connector

Terminal

M53

5

Ground

A/C switch: ON

(Blower motor operates.)

Approx. 0

(+)

(

−

)

Condition

Voltage

ECM

—

 Connector

Terminal

F8

41

Ground

A/C switch: ON

(Blower motor operates.)

Approx. 1.0 - 4.0

(+)

(

−

)

Condition

Voltage

ECM

—

 Connector

Terminal

F68

78

Ground

A/C switch: ON

(Blower motor operates.)

Approx. 2.3

MAGNET CLUTCH

HAC-69

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

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HAC

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12.

CHECK BCM INPUT (FAN ON) SIGNAL

Check FAN ON/OFF signal in “DATA MONITOR”. Refer to 

HAC-31, "CONSULT-III Function"

.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> GO TO 13.

13.

CHECK CIRCUIT CONTINUITY BETWEEN BCM AND AUTO AMP.

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector and auto amp. connector.

3.

Check continuity between BCM harness connector M65 terminal 15 and auto amp. harness connector
M53 terminal 24.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> Repair harness or connector.

14.

CHECK BCM

1.

Connect BCM harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between BCM harness connector M65 terminal 15 and ground.

Is the inspection result normal?

YES

>> GO TO 15.

NO

>> Replace BCM. Refer to 

BCS-64, "Exploded View"

.

15.

CHECK FAN ON SIGNAL

1.

Turn ignition switch OFF.

2.

Connect auto amp. connector.

3.

Turn ignition switch ON.

4.

Check voltage between auto amp. harness connector M53 terminal 24 and ground.

Is the inspection result normal?

YES

>> GO TO 16.

NO

>> Replace auto amp.

16.

CHECK CAN COMMUNICATION

Check CAN communication. Refer to 

LAN-59, "CAN Communication Signal Chart"

.

• ECM – IPDM E/R
• ECM  –  BCM
Is the inspection result normal?

FAN CONTROL DIAL ON

: FAN ON SIG ON

FAN CONTROL DIAL OFF

: FAN ON SIG OFF

BCM

Auto amp.

Continuity

Connector

Terminal

Connector

Terminal

M65

15

M53

24

Continuity should exist

BCM

—

Voltage

Connector

Terminal

M65

15

Ground

Battery voltage

(+)

(

−

)

Condition

Voltage

Auto amp.

—

 Connector

Terminal

M53

24

Ground

Fan control dial: ON 

Approx. 0

HAC-70

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

MAGNET CLUTCH

YES

>> Replace ECM.

NO

>> Repair or replace malfunctioning part(s).

Component Inspection

INFOID:0000000000954659

Refrigerant Pressure Sensor

The refrigerant pressure sensor (1) is attached to the liquid tank.
Make sure that the A/C refrigerant pressure and the sensor output
voltage are within the specified range as shown in the A/C operating
condition figure. Refer to 

EC-316, "Description"

 [HR16DE (WITH

EURO-OBD)], 

EC-595, "Description"

 [HR16DE (WITHOUT EURO-

OBD)], 

EC-936, "Description"

 [MR20DE (WITH EURO-OBD)], 

EC-

1215, "Description"

 [MR20DE (WITHOUT EURO-OBD)], or 

EC-

1380, "Description"

 (K9K).

JPIIA0090ZZ

SJIA1841E

PTC HEATER

HAC-71

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

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HAC

N

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PTC HEATER

Description

INFOID:0000000001026736

IPDM E/R operate a PTC heater, by a signal of BCM.

Component Function Check

INFOID:0000000001026738

1.

CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK

CONSULT-III ACTIVE TEST

1.

Start engine.

2.

Select “PTC HEATER” of BCM active test item.

CAUTION:

• Engine must be cold.
• Battery must be charged.

3.

Turn fan control dial clockwise.

4.

Turn temperature control dial to full hot position.

5.

With operating the test item, check that PTC heater operation.

6.

Check for warm air at discharge air outlet.

Does the PTC heater operate?

YES

>> END.

NO

>> Go to Diagnosis Procedure. Refer to 

HAC-71, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000001026739

1.

CHECK PTC HEATER-1 OPERATION

CONSULT -III ACTIVE TEST

1.

Disconnect PTC heater connector.

2.

Start engine.

3.

Select “PTC HEATER” of BCM active test item.

4.

With operating the item, check voltage between PTC heater harness connector E117 terminal 3 and
ground.

In the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 5.

2.

CHECK GROUND CIRCUIT FOR PTC HEATER-1

1.

Turn ignition switch OFF.

2.

Check continuity between PTC heater harness connector E116 terminal 1 and ground.

PTC 3

: PTC heater HI operation

PTC 2

: PTC heater MID operation

PTC 1

: PTC heater LO operation

OFF

: Stop the PTC heater operation

(+)

(

−

)

Test  item

Voltage

PTC heater

—

PTC  HEATER

 Connector

Terminal

E117

3

Ground

OFF

Approx. 0

PTC 1

Battery voltage

PTC 2

Approx. 0

PTC 3

Battery voltage