Mazda 6. Manual — part 91

CONTROL SYSTEM

U–37

U

Present Failure Indication Mode

•

In present failure indication mode, present failures in the control system circuits (open, short circuits) are
detected, and the flashing of the rear defroster indicator light on the climate control unit indicates the DTCs
shown in the table below.

Past Failure Indication Mode

•

In past failure indication mode, past failures (intermittent problems) in the input sensor circuits (open, short
circuits) are stored, and the flashing of the rear defroster indicator light on the climate control unit indicates the
DTCs shown in the table below. Erase DTCs from the memory after failures have been corrected so they are
not maintained as past failures.

U–38

CONTROL SYSTEM

Diagnostic trouble codes

Output Device Operation Check Mode

•

In the output device operation check mode, the climate control unit forces all the output system actuation
devices to operate regardless of the input system. The displays change and the switch indicator lights
illuminate automatically according to the actuator operated.

•

Inspect visually, listen for operation sound, and place hands over air discharge outlets to check for correct
operating conditions and to locate the malfunctioning system.

DTC

No.

Indicator pattern

Diagnosed circuit

Detected condition

Memo

rized

02

Solar radiation sensor
(present)

Open circuit in solar radiation sensor
circuit
Short circuit in solar radiation sensor
circuit (terminal B side only)

No

06

Cabin temperature
sensor (present)

Open/short circuit is in cabin
temperature sensor circuit

No

07

Cabin temperature
sensor (past)

Cabin temperature sensor circuit is
entered fail-safe mode at least once

Yes

10

Evaporator temperature
sensor (present)

Open/short circuit is in evaporator
temperature sensor circuit

No

11

Evaporator temperature
sensor (past)

Evaporator temperature sensor
circuit is entered fail-safe mode at
least once

Yes

12

Ambient temperature
sensor (present)

Open/short circuit is in Ambient
temperature sensor circuit

No

13

Ambient temperature
sensor (past)

Ambient temperature sensor circuit
is entered fail-safe mode at least
once

Yes

14

Water temperature
sensor (present)

Open/short circuit is in Water
temperature sensor circuit

No

15

Water temperature
sensor (past)

Water temperature sensor circuit is
entered fail-safe mode at least once

Yes

18

Air mix actuator
(potentiometer)
(present)

Open/short circuit is in air mix
actuator (potentiometer) circuit

No

19

Air mix actuator
(potentiometer) (past)

Air mix actuator (potentiometer)
circuit is entered fail-safe mode at
least once

Yes

21

Airflow mode actuator
(potentiometer)
(present)

Open/short circuit is in airflow mode
actuator (potentiometer) circuit

No

22

Airflow mode actuator
(potentiometer) ((past)

Airflow mode actuator
(potentiometer) circuit is entered fail-
safe mode at least once

Yes

58

Air mix actuator (motor
lock) (past)

Air mix actuator circuit is entered fail-
safe mode at least once

Yes

59

Airflow mode actuator
(motor lock) (past)

Airflow mode actuator circuit is
entered fail-safe mode at least once

Yes

CONTROL SYSTEM

U–39

U

Output device operation check table

*

: Shown on the information display according to step.

End Of Sie

Step Operating device

Operating conditions

Moni

tor

*

Other device conditions

1

Blower motor
speed

1

•

Air mix actuator operation
— 50%

•

Airflow mode actuator operation
— VENT

•

Air intake actuator operation
— FRESH

•

A/C compressor operation
— ON

2

Air mix actuator
operation

21.0

•

Blower motor speed
— 3rd

•

Airflow mode actuator operation
— VENT

•

Air intake actuator operation
— FRESH

•

A/C compressor operation
— ON

20.5

20.0

3

Airflow mode
actuator operation

3

•

Blower motor speed
— 3rd

•

Air mix actuator operation
— 50%

•

Air intake actuator operation
— FRESH

•

A/C compressor operation
— ON

4

Air intake actuator
operation

4

•

Blower motor speed
— 3rd

•

Air mix actuator operation
— 0%

•

Airflow mode actuator operation
— VENT

A/C compressor
operation

CONTENTS

Mazda6
Workshop
Manual

FOREWORD

This manual contains on-vehicle service

and diagnosis for the Mazda6.

For proper repair and maintenance,

a thorough familiarization with this manual
is important, and it should always be kept
in a handy place for quick and easy
reference.

All the contents of this manual, including

drawings and specifications, are the latest
available at the time of printing.
As modifications affecting repair or
maintenance occur, relevant information
supplementary to this volume will be made
available at Mazda dealers. This manual
should be kept up-to-date.

Mazda Motor Corporation reserves

the right to alter the specifications and
contents of this manual without obligation
or advance notice.

All rights reserved. No part of this book

may be reproduced or used in any form or
by any means, electronic or
mechanical—including photocopying and
recording and the use of any kind of
information storage and retrieval
system—without permission in writing.

Mazda Motor Corporation

HIROSHIMA, JAPAN

APPLICATION:
This manual is applicable to vehicles
beginning with the Vehicle Identification
Numbers (VIN), and related materials shown
on the following page.

© 2002 Mazda Motor Corporation

PRINTED IN The Netherlands, MARCH 2002
1730–1E–02C

Title

Section

General Information

GI

Engine

B

Lubrication System

D

Cooling System

E

Fuel and Emission Control Systems

F

Engine Electrical System

G

Clutch

H

Manual Transaxle

J

Automatic Transaxle

K

Front and Rear Axles

M

Steering System

N

Braking System

P

Suspension

R

Body

S

Body Electrical System

T

Heater and Air Conditioner Systems

U

Technical Data

TD

Special Tools

ST