Nissan Tiida C11. Manual - part 858

HAC-96

< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

CAN COMMUNICATION SYSTEM

CAN COMMUNICATION SYSTEM

System Description

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Refer to 

LAN-13, "System Description"

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DIAGNOSIS SYSTEM (BCM)

HAC-97

< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

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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.

FAN ON SIG

“ON/OFF”

Displays “FAN (ON)/FAN (OFF)” status as judged from blower motor switch signal.

COMP ON SIG

“ON/OFF”

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

HAC-98

< FUNCTION DIAGNOSIS >

[AUTO AIR CONDITIONER (W/O NAVI)]

SELF-DIAGNOSIS FUNCTION

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 OFF switch for at least 5 seconds. The OFF
switch must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be cancelled by either pressing AUTO switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of pushing front air control switches, as required.
Additionally shifting from STEP-5 to AUXILIARY MECHANISM is accomplished by means of pushing blower
motor switch (UP: ).

FUNCTION CONFIRMATION PROCEDURE

1.

SET IN SELF-DIAGNOSTIC MODE

1.

Turn ignition switch ON.

2.

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

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SELF-DIAGNOSIS FUNCTION

HAC-99

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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: LED AND DISPLAY ARE CHECKED

Check display screen (1) and LED illumination (2).
OK or NG

OK

>> GO TO 3.

NG

>>  Malfunction OFF switch or AUTO switch. Refer to 

HAC-

311, "Self-Diagnosis"

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3.

CHECK TO ADVANCE SELF-DIAGNOSIS STEP-2

Press temperature control switch (UP:  ).
Advance to self-diagnosis STEP-2?

YES

>> GO TO 4.

NO

>> Replace front air control (temperature control switch is malfunctioning). Refer to XX.

4.

CHECK TO RETURN SELF-DIAGNOSIS STEP-1

Press temperature control switch (DOWN:  ).

Return to self-diagnosis STEP-1?

YES

>> GO TO 5.

NO

>> Replace front air control (temperature control switch is malfunctioning). Refer to XX.

5.

STEP-2: SENSOR CIRCUITS ARE CHECKED FOR OPEN OR SHORT CIRCUIT

Press temperature control switch (UP:  ).
Does code No. 20 appear on the display?

YES

>> GO TO 6.

NO

>> GO TO 13.

6.

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

Press temperature control switch (UP:  ).
Does code No. 30 appear on the display?

YES

>> GO TO 7.

NO

>> GO TO 14.

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