Infiniti FX35 / FX45. Manual - part 113

ATC-48

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

When performing indoors, aim a light (more than 60 W) at sunload sensor, otherwise code No. 25 will indicate
despite that sunload sensor is functioning properly.

>> INSPECTION END

14.

CHECK MALFUNCTIONING DOOR MOTOR POSITION SWITCH

Mode and/or intake door motor PBR(s) is/are malfunctioning.

(If two or more mode or intake door motors malfunction, corresponding code Nos. indicates 1 second each.)
*1: If mode door motor harness connector is disconnected, the following display pattern will appear.
31

→

Return to 31

*2: If intake door motor harness connector is disconnected, the following display pattern will appear.
37

→

Return to 37

*3: FOOT position during automatic control. Refer to "AUXILIARY MECHANISM: FOOT POSITION SETTING
TRIMMER".

>> INSPECTION END

AUXILIARY MECHANISM: TEMPERATURE SETTING TRIMMER

The trimmer compensates for differences in range of

C (

F) between temperature setting (displayed dig-

itally) and temperature felt by customer.

Operating procedures for this trimmer are as follows:

Begin self-diagnosis STEP-5 mode. Refer to "Self-diagnosis Function".

Press (fan) UP switch to set system in auxiliary mode.

Display shows “61” in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.

SJIA1781E

Code No.

*1 *2

Mode or intake door position

Reference page

VENT

Mode door motor

ATC-57, "Mode Door Motor Circuit"

B/L 1

B/L 2

FOOT

D/F

DEF

FRE

Intake door motor

ATC-62, "Intake Door Motor Circuit"

20% FRE

REC

SJIA1782E

TROUBLE DIAGNOSIS

ATC-49

< SERVICE INFORMATION >

ATC

Press temperature control switch (driver side) as desired. Temperature will change at a rate of 0.5

(1.0

F) each time a switch is pressed.

CAUTION:

A decimal point is not indicated on the display.

When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Tempera-
ture set becomes that of initial condition, i.e. 0

C (0

F).

AUXILIARY MECHANISM: FOOT POSITION SETTING TRIMMER

Wind distribution ratio in FOOT mode can be set.

Operating procedures for this trimmer are as follows:

Begin self-diagnosis STEP-5 mode. Refer to "Self-diagnosis Function".

Press (fan) UP switch to set system in auxiliary mode.

Display shows “61” in auxiliary mechanism. It takes approximately 3 seconds to enable setting operation.

SJIA1575E

ATC-50

< SERVICE INFORMATION >

TROUBLE DIAGNOSIS

Press the mode switch as desired.

When battery cable is disconnected or battery voltage is below 10 V, trimmer operation is canceled. Wind dis-
tribution ratio set becomes that of initial condition.

AUXILIARY MECHANISM: INLET PORT MEMORY FUNCTION

When ignition switch is turned from OFF to ON, inlet port memory function at manual mode can be set.

Operating procedures for this trimmer are as follows:

Begin self-diagnosis STEP-5 mode. Refer to "Self-diagnosis Function".

Press (fan) UP switch to set system in auxiliary mode.

Press the intake switch as desired.

When battery cable is disconnected or battery voltage is below 10 V, memory function is canceled. Memory
function set becomes that of initial condition.

Operational Check

INFOID:0000000001328182

The purpose of the operational check is to check if the individual system operates properly.

CHECKING MEMORY FUNCTION

Press the temperature control (UP) switch (driver side) until 32

C (90

F) is displayed.

Press OFF switch.

Turn ignition switch OFF.

Turn ignition switch ON.

Press the AUTO switch.

Confirm that the set temperature remains at previous temperature.

Press OFF switch.

If NG, go to trouble diagnosis procedure for

ATC-85, "Memory Function"

If OK, continue the check.

CHECKING BLOWER

SJIA1581E

LED status of

FRE position

LED status of

REC position

Setting status

Setting changeover

method

FRE

REC

OFF

AUTO control

Intake SW: ON

OFF

AUTO control (Initial setting)

Manual REC status is memorized.
(Initial setting)

OFF

Manual FRE status is memorized.

AUTO control

Manual FRE status is memorized.

Manual REC status is memorized.

Conditions

: Engine running at normal operating temperature

TROUBLE DIAGNOSIS

ATC-51

< SERVICE INFORMATION >

ATC

Press fan (UP:+) switch. Blower should operate on low speed. The fan symbol should have one blade lit.

Press fan (UP:+) switch again, and continue checking blower speed and fan symbol until all speeds are
checked.

Leave blower on max. speed.

If NG, go to trouble diagnosis procedure for

ATC-64, "Blower Motor Circuit"

If OK, continue the check.

CHECKING DISCHARGE AIR

Press MODE switch and DEF switch.

Each position indicator should change shape.

Confirm that discharge air comes out according to the air distri-
bution table. Refer to

ATC-29, "Discharge Air Flow"

If NG, go to trouble diagnosis procedure for

ATC-57, "Mode Door

Motor Circuit"

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual
inspection) and intake door position is at FRE when the D/F or DEF
is selected.

CHECKING INTAKE AIR

Press intake switch. Recirculation indicator should illuminate.

Press intake switch again. Fresh indicator should illuminate.

Listen for intake door position change. (Slight change of blower sound can be heard.)

If NG, go to trouble diagnosis procedure for

ATC-62, "Intake Door Motor Circuit"

If OK, continue the check.
NOTE:
Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at FRE
when the D/F or DEF is selected.

CHECKING TEMPERATURE DECREASE

Press temperature control (DOWN) switch (driver side) until 18

C (60

F) is displayed.

Check for cold air at discharge air outlets.

If NG, go to trouble diagnosis procedure for

ATC-75, "Insufficient Cooling"

If OK, continue the check.

CHECKING TEMPERATURE INCREASE

Press temperature control (UP) switch (driver side) until 32

C (90

F) is displayed.