Infiniti M35/M45 Y50. Manual — part 137

TROUBLE DIAGNOSIS

ATC-99

C

D

E

F

G

H

I

K

L

M

A

B

ATC

*1

ATC-57, "FUNCTION CONFIRMA-
TION PROCEDURE"

, see No. 2 to 6.

*2

ATC-82, "Air Mix Door Motor Circuit"

*3

ATC-102, "Test Reading
(VQ35DE)"

or

ATC-103, "Test

Reading (VK45DE)"

*4

ATC-63, "AUXILIARY MECHA-
NISM: TEMPERATURE SETTING
TRIMMER"

*5

ATC-57, "FUNCTION CONFIRMA-
TION PROCEDURE"

, see No. 13.

*6

ATC-71, "LAN System Circuit"

*7

ATC-88, "Blower Motor Circuit"

*8

ATC-93, "Magnet Clutch Circuit"

*9

ATC-100, "PERFORMANCE TEST
DIAGNOSIS"

*10

ATC-65, "Operational Check"

*11

ATC-7, "CONTAMINATED REFRIG-
ERANT"

*12

EM-16, "Checking Drive Belts"

(VQ35DE) or

EM-174, "Checking

Drive Belts"

(VK45DE)

*13

EC-499, "SYSTEM DESCRIPTION"

(VQ35DE) or

EC-1214, "SYSTEM

DESCRIPTION"

(VK45DE)

ATC-100

TROUBLE DIAGNOSIS

PERFORMANCE TEST DIAGNOSIS

*1

ATC-102, "PERFORMANCE
CHART"

*2

ATC-102, "PERFORMANCE
CHART"

*3

ATC-104, "TROUBLE DIAGNOSIS
FOR UNUSUAL PRESSURE"

*4

ATC-82, "Air Mix Door Motor Circuit"

SJIA1226E

TROUBLE DIAGNOSIS

ATC-101

C

D

E

F

G

H

I

K

L

M

A

B

ATC

*1

ATC-156, "Check Disc to Pulley
Clearance"

*2

ATC-88, "Blower Motor Circuit"

*3

EM-16, "Checking Drive Belts"

(VQ35DE) or

EM-174, "Checking

Drive Belts"

(VK45DE)

SJIA1642E

ATC-102

TROUBLE DIAGNOSIS

PERFORMANCE CHART
Test Condition

Testing must be performed as follows:

Test Reading (VQ35DE)

Recirculating-to-discharge Air Temperature Table

Ambient Air Temperature-to-operating Pressure Table

Vehicle condition

Indoors or in the shade (in a well-ventilated place)

Doors

Closed

Door windows

Open

Hood

Open

TEMP.

Max. COLD

Mode switch

(Ventilation) set

Intake switch

(Recirculation) set

Fan (blower) speed

Max. speed set

Engine speed

Idle speed

Operate the air conditioning system for 10 minutes before taking measurements.

Inside air (Recirculating air) at blower assembly inlet

Discharge air temperature at center ventilator

°

C (

°

F)

Relative humidity

%

Air temperature

°

C (

°

F)

50 - 60

20 (68)

5.5 - 7.2 (42 - 45)

25 (77)

8.5 - 10.9 (47 - 52)

30 (86)

12.3 - 15.1 (54 - 59)

35 (95)

16.5 - 19.8 (62 - 68)

40 (104)

21.0 - 25.0 (70 - 77)

60 - 70

20 (68)

7.2 - 9.0 (45 - 48)

25 (77)

10.9 - 13.4 (52 - 56)

30 (86)

15.1 - 18.0 (59 - 64)

35 (95)

19.8 - 23.0 (68 - 73)

40 (104)

25.0 - 29.0 (77 - 84)

Ambient air

High-pressure (Discharge side)

kPa (kg/cm

2

, psi)

Low-pressure (Suction side)

kPa (kg/cm

2

, psi)

Relative humidity

%

Air temperature

°

C (

°

F)

50 - 70

20 (68)

733 - 895

(7.5 - 9.1, 106.3 - 129.8)

180 - 220

(1.8 - 2.2, 26.1 - 31.9)

25 (77)

838 - 1,025

(8.5 - 10.5, 121.5 - 148.6)

210 - 257

(2.1 - 2.6, 30.5 - 37.3)

30 (86)

985 - 1,204

(10.0 - 12.3, 142.8 - 174.6)

239 - 293

(2.4 - 3.0, 34.7 - 42.5)

35 (95)

1,115 - 1,363

(11.4 - 13.9, 161.7 - 197.6)

270 - 330

(2.8 - 3.4, 39.2 - 47.9)

40 (104)

1,294 - 1,581

(13.2 - 16.1, 187.6 - 229.2)

331 - 405

(3.4 - 4.1, 48.0 - 58.7)