Mazda 6 2002, Workshop Manual

Page: 1212 / 1248

ON-BOARD DIAGNOSTIC
U–61
U
DTC 22
A6E857001038W14
Diagnostic Procedure
End Of Sie
DTC 58
A6E857001038W15
Diagnostic Procedure
End Of Sie
DTC 59
A6E857001038W16
DTC 22 Airflow mode actuator (potentiometer) system inspection
POSSIBLE
CAUSE
•
Airflow mode actuator malfunction
•
Climate control unit malfunction
•
Open circuit between airflow mode actuator and climate control unit
•
Short circuit between airflow mode actuator (terminal C) and climate control unit (terminal 1W: 24-pin)
STEP INSPECTION ACTION
1
•
Inspect airflow mode actuator.
•
Is it okay?
Yes Go to next step.
No Replace airflow mode actuator.
2
•
Disconnect climate control unit connector
(24-pin) and air mix actuator connector.
•
Is there open circuit between following
terminals of climate control unit connector
(24-pin) and airflow mode actuator
connector?
— 1B—B
— 1W—C
— 1I—A
Yes Repair wiring harness.
No Go to next step.
3
•
Is there short circuit to ground between
terminal 1W of climate control unit connector
(24-pin) and terminal C of airflow mode
actuator connector? Yes Repair wiring harness.
No This system is normal at present. (Erase the past failure
from memory.)
DTC 58 Air mix actuator (motor lock) system inspection
POSSIBLE
CAUSE
•
Air mix actuator malfunction
•
A/C unit (air mix link and/or air mix crank) malfunction
•
Climate control unit malfunction
•
Open or short circuit between air mix actuator and climate control unit
STEP INSPECTION ACTION
1
•
Disconnect air mix actuator connector.
•
Connect battery positive voltage to terminal
D (or terminal F) and ground to terminal F (or
terminal D) of air mix actuator connector.
•
Does air mix actuator operate?
Yes Connect air mix actuator connector, then go to Step 3.
No Go to next step.
2
•
Remove air mix actuator.
•
Operate air mix link by hand.
•
Does air mix link operate smoothly?
Yes Replace air mix actuator.
No Replace air mix link and/or air mix crank.
3
•
Disconnect climate control unit connect (12-
pin).
•
Connect battery positive voltage to terminal
2D (or terminal 2C) and ground to terminal
2C (or terminal 2D) of climate control unit
connector (24-pin).
•
Does air mix actuator operate?
Yes Replace climate control unit.
No Repair wiring harness.
DTC 59 Airflow mode actuator (motor lock) system inspection
POSSIBLE
CAUSE
•
Airflow mode actuator malfunction
•
A/C unit (airflow mode links and/or airflow mode cranks) malfunction
•
Climate control unit malfunction
•
Open or short circuit between airflow mode actuator and climate control unit