Nissan Qashqai (2007-2010). Manual - part 955

HAC-180

< COMPONENT DIAGNOSIS >

[MANUAL AIR CONDITIONER]

MANUAL AIR CONDITIONER SYSTEM

JCIWA0051GB

ECM

HAC-181

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

ECU DIAGNOSIS

ECM

HR16DE

HR16DE : Reference Value

INFOID:0000000001117186

VALUES ON THE DIAGNOSIS TOOL

Remarks:
• Specification data are reference values.
• Specification data are output/input values which are detected or supplied by the ECM at the connector.
*Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the
specification data in spite of the ignition timing not being adjusted to the specification data. this IGN TIMING
monitors the data calculated by the ECM according to the signals input from the camshaft position sensor and
other ignition timing related sensors.

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located in the engine room left side near battery. 
• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

MR20DE

Monitor Item

Condition

Values/Status

AC PRESS SEN

• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0 V

PBIA9221J

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

41

Ground

G/P

Refrigerant pressure sensor

Input

[Engine is running]
• Warm-up condition
• Both A/C switch and blower 

fan motor switch: ON (Com-
pressor operates)

1.0 - 4.0 V

48

Ground

R/L

Sensor ground
(Refrigerant pressure sen-
sor)

—

[Engine is running]
• Warm-up condition
• Idle speed

0 V

74

Ground

Y/W

Sensor power supply
(Refrigerant pressure sen-
sor)

—

[Ignition switch: ON]

5 V

HAC-182

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

ECM

MR20DE : Reference Value

INFOID:0000000001117187

VALUES ON THE DIAGNOSIS TOOL

Remarks:

l

 Specification data are reference values.

l

 Specification data are output/input values which are detected or supplied by the ECM at the connector.

* Specification data may not be directly related to their components signals/values/operations.
I.e. Adjust ignition timing with a timing light before monitoring IGN TIMING, because the monitor may show the specification data in spite of the

ignition timing not being adjusted to the specification data. this IGN TIMING monitors the data calculated by the ECM according to the signals
input from the camshaft position sensor and other ignition timing related sensors.

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located behind the passenger side instrument lower panel. For this inspection, remove passenger

side instrument lower panel.

• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

K9K

K9K : Reference Value

INFOID:0000000001117188

VALUE ON THE DIAGNOSIS TOOL

Remarks:

l

 Specification data are reference values.

l

 Specification data are output/input values which are detected or supplied by the ECM at the connector.

Monitor Item

Condition

Values/Status

AC PRESS SEN

• Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)

1.0 - 4.0 V

PBIA9221J

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

41

Ground

G

Refrigerant pressure sensor

Input

[Engine is running]
• Warm-up condition
• Both A/C switch and blower 

fan motor switch: ON (Com-
pressor operates)

1.0 - 4.0 V

48

Ground

R/B

Sensor ground
(Refrigerant pressure sen-
sor)

—

[Engine is running]
• Warm-up condition
• Idle speed

0 V

74

Ground

L

Sensor power supply
(Refrigerant pressure sen-
sor)

Input

[Ignition switch: ON]

5 V

ECM

HAC-183

< ECU DIAGNOSIS >

[MANUAL AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

* Specification data may not be directly related to their components signals/values/operations.

TERMINAL LAYOUT

PHYSICAL VALUES

NOTE:
• ECM is located behind the passenger side instrument lower panel. For this inspection, remove passenger

side instrument lower panel.

• Specification data are reference values and are measured between each terminal and ground.
• Pulse signal is measured by CONSULT-III.

CAUTION:

Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECMs transistor. Use a ground other than ECM terminals, such as the ground.

MONITOR ITEM

CONDITION

SPECIFICATION

RFRGERNT PRSS

• Engine: After warming up
• Air conditioner switch: OFF
• Shift lever: Neutral position
• No  load

Idle

Approximately 5.7 bar

JMBIA0417ZZ

Terminal No.

Wire 

color

Description

Condition

Value

(Approx.)

+

-–

Signal name

Input/

Output

74

Ground

R/L

Sensor power supply
(Refrigerant pressure sen-
sor)

—

[Ignition switch: ON]

Approximately 5.0 V

78

Ground

R/B

Sensor ground
(Refrigerant pressure sen-
sor)

G/P

[Engine is running]
• Warm-up condition
• Idle speed

Approximately 0.3 V

89

Ground

Y/W

Refrigerant pressure sensor

Input

[Engine is running]
• Warm-up condition
• Both A/C switch and blower 

fan switch: ON (Compressor 
operates)

Approximately2.3 V