Mazda CX-7 2007 Workshop Manual page 1117

DTC B1274, B1275
DTC B1274,
Airflow mode actuator (potentiometer) system
B1275
• Airflow mode actuator malfunction
• Open circuit in wiring harness between climate control unit and airflow mode actuator
POSSIBLE
• Short circuit in wiring harness between climate control unit (terminal P) and airflow mode actuator
CAUSE
(terminal C)
Diagnostic Procedure
STEP
• Inspect the airflow mode actuator. (See 07-40-11
1
AIRFLOW MODE ACTUATOR INSPECTION.)
• Is it normal?
• Disconnect the climate control unit connector and
2
the airflow mode actuator connector.
• Is there an open circuit in the wiring harness
between the following terminals of the climate
control unit and the airflow mode actuator?
— J— B
— P— C
— C— A
• Is there a short circuit to ground in the wiring
3
harness between climate control unit terminal P
and airflow mode actuator terminal C?
CLIMATE CONTROL UNIT CONNECTOR
Q O M
W U S
X V T R P N
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
K I G C A
E
L D
J H F B
Yes Go to the next step.
No Replace the airflow mode actuator. (See 07-40-10
AIRFLOW MODE ACTUATOR REMOVAL/
INSTALLATION.)
Yes Repair the wiring harness.
No Go to the next step.
Yes Repair the wiring harness.
No The system is normal at present. (Clear the malfunction
from the memory.)
AIRFLOW MODE ACTUATOR CONNECTOR
F
*
id070200800800
ACTION
D C B A
07-02–7
07-02