Nissan Tiida C11. Manual - part 887

HAC-212

< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

DIAGNOSIS SYSTEM (BCM)

DIAGNOSIS SYSTEM (BCM)

CONSULT-III Function (BCM)

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CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

DATA MONITOR

Display Item List

BCM diagnostic 

test item

Diagnostic mode

Description

Inspection by part

WORK SUPPORT

Supports inspections and adjustments. Commands are transmitted to the BCM for 
setting the status suitable for required operation, input/output signals are received 
from the BCM and received data is displayed.

DATA MONITOR

Displays BCM input/output data in real time.

ACTIVE TEST

Operation of electrical loads can be checked by sending drive signal to them.

SELF-DIAG RESULTS 

Displays BCM self-diagnosis results.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication can be read.

ECU PART NUMBER

BCM part number can be read.

CONFIGURATION

Performs BCM configuration read/write functions.

Monitor item name “operation or 

unit”

Contents

IGN ON SW

“ON/OFF”

Displays “IGN Position (ON)/OFF, ACC Position (OFF)” status as judged from ignition switch signal 
through the CAN communication.

FAN ON SIG

“ON/OFF”

Displays “FAN (ON)/FAN (OFF)” status as judged from blower motor switch signal through CAN com-
munication.

AIR COND SW

“ON/OFF”

Displays “COMP (ON)/COMP (OFF)” status as judged from air conditioner switch signal through the 
CAN communication.

SELF-DIAGNOSIS FUNCTION

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< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

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SELF-DIAGNOSIS FUNCTION

Front Air Control Self-Diagnosis

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DESCRIPTION

The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to appli-
cable sections (items) for details. Shifting from usual control to the self-diagnostic system is accomplished by
starting the engine (turning the ignition switch ON) and pressing intake switch for at least 5 seconds. The
intake switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This
system will be cancelled by either pressing A/C switch or turning the ignition switch OFF. Shifting from one
step to another is accomplished by means of turning blower control dial, as required.

FUNCTION CONFIRMATION PROCEDURE

1.

SET IN SELF-DIAGNOSTIC MODE

1.

Set temperature control dial at 22

°

C (72

°

.

2.

Set mode control dial to B/L or FOOT position.

3.

Set blower control dial to OFF position.

4.

Turn ignition switch ON.

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HAC-214

< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/NAVI)]

SELF-DIAGNOSIS FUNCTION

5.

Set in self-diagnostic mode as follows. Within 10 seconds after starting engine (ignition switch is turned
ON.), press intake switch for at least 5 seconds.

CAUTION:

If battery voltage drops below 12V during diagnosis STEP-3, door motor speed becomes slower and
as a result, the system may generate an error even when operation is usual. To avoid this, start engine
before performing this diagnosis.

>> GO TO 2.

2.

STEP-1: LEDS ARE CHECKED

1.

Check rear defogger switch, A/C switch and intake switch LEDs illumination.

2.

Check indicator LEDs illumination.

OK or NG

OK

>> GO TO 3.

NG

>> • Does not illuminate rear defogger switch, A/C switch

and intake switch LEDs illumination. Refer to 

HAC-

311, "Self-Diagnosis"

.

3.

STEP-2: CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2

Turn blower control dial to AUTO position.

CAUTION:

When switched to STEP-2, LEDs of FRE and REC position blinks for approximately 5 seconds.

Check intake switch (FRE, REC) indicator LEDs illumination

OK

>> GO TO 4.

NG

>> Replace front air control (Blower control dial is malfunctioning.)

4.

CHECK TO RETURN SELF-DIAGNOSIS STEP-1

Turn blower control dial to OFF position.

Return to self-diagnosis STEP-1?

YES

>> GO TO 5.

NO

>> Replace front air control (Blower control dial is malfunctioning.)

5.

STEP-2: SENSOR CIRCUIT ARE CHECKED

1.

Turn blower control dial to AUTO position.

CAUTION:

When switched to STEP-2, LEDs of FRE and REC position blinks for approximately 5 seconds.

2.

Check intake switch (FRE, REC) indicator LEDs illumination.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 9.

6.

STEP-3: AIR MIX DOOR AND MODE DOOR MOTOR ARE CHECKED

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SELF-DIAGNOSIS FUNCTION

HAC-215

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[AUTO AIR CONDITIONER (W/NAVI)]

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1.

Turn mode control dial to AUTO, VENT or B/L position. (Except
for FOOT, D/F and DEF position)

2.

Turn blower control dial to 1st position.

3.

LEDs for A/C switch and intake switch blink for approximately 5
seconds. Then evaluation results are displayed.

4.

Check intake switch (FRE, REC) and A/C switch LEDs illumina-
tion.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 10.

7.

STEP-4: OPERATION OF EACH DOOR MOTOR IS CHECKED

1.

Turn blower control dial to 2nd position. When switched to
STEP-4, LED for intake switch (FRE, REC) turns ON.

2.

Every time rear window defogger switch is pressed, output pat-
tern shifts in following order: 1

→

2

→

3

→

4

→

5

→

6

→

1.

>> GO TO 8.

8.

CHECK ACTUATORS

Confirm discharge air flow (refer to 

HAC-208, "Discharge Air Flow"

), air temperature, blower motor voltage,

and A/C compressor operation.

Checks must be made visually, by listening to any noise, or by touching air outlets with your hand, etc. for
improper operation.
OK or NG

OK

>> INSPECTION END

NG

>> • Air outlet does not change.

Go to Mode Door Motor Circuit. Refer to 

HAC-222, "Mode Door Motor Diagnosis Procedure"

.

• Intake door does not change.

Go to Intake Door Motor Circuit. Refer to 

HAC-230, "Intake Door Motor Diagnosis Procedure"

.

• Discharge air temperature does not change.

Go to Air Mix Door Motor Circuit. Refer to 

HAC-226, "Air Mix Door Motor Diagnosis Procedure"

.

• Blower motor operation is malfunctioning.

Go to Blower Motor Circuit. Refer to 

HAC-234, "Front Blower Motor Diagnosis Procedure"

.

• Magnet clutch does not engage.

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SJIA0867E

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