Nissan Qashqai (2007-2010). Manual — part 933

HAC-92

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

ECM

MR20DE : Reference Value

INFOID:0000000001116979

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:0000000001116980

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-93

< ECU DIAGNOSIS >

[AUTOMATIC 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

HAC-94

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

BCM (BODY CONTROL MODULE)

BCM (BODY CONTROL MODULE)

Reference Value

INFOID:0000000001116981

VALUES ON THE DIAGNOSIS TOOL

Monitor Item

Condition

Value/Status

AIR COND SW

A/C switch OFF

Off

A/C switch ON

On

FAN ON SIG

Fan switch OFF

Off

Fan switch ON

On

IGN ON SW

Ignition switch OFF or ACC

Off

Ignition switch ON

On

BCM (BODY CONTROL MODULE)

HAC-95

< ECU DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

TERMINAL LAYOUT

PHYSICAL VALUES

CAUTION:

• Check combination switch system terminal waveform under the loaded condition with lighting

switch, turn signal switch and wiper switch OFF is not to be fluctuated by being overloaded.

• Turn wiper intermittent dial position to 4 except when checking waveform or voltage of wiper inter-

mittent dial position. Wiper intermittent dial position can be confirmed on CONSULT -III. Refer to

BCS-26, "COMB SW : CONSULT-III Function (BCM - COMB SW)"

.

• BCM reads the status of the combination switch at 10ms internal normally. Refer to

BCS-7, "System

Description"

.

JPMIA0145GB