Mazda CX-7 2007 Workshop Manual page 1118

DTC B1282, B1283
DTC B1282,
Air mix actuator (potentiometer) system
B1283
• Air mix actuator malfunction
• Open circuit in wiring harness between climate control unit and air mix actuator
POSSIBLE
• Short circuit in wiring harness between climate control unit (terminal N) and air mix actuator (terminal
CAUSE
C)
Diagnostic Procedure
STEP
• Inspect the air mix actuator. (See 07-40-21 AIR
1
MIX ACTUATOR INSPECTION.)
• Is it normal?
• Disconnect the climate control unit connector and
2
the air mix actuator connector.
• Is there an open circuit in the wiring harness
between the following terminals of the climate
control unit and the air mix actuator?
— J— A
— N— C
— C— B
• Is there a short circuit to ground in the wiring
3
harness between climate control unit terminal N
and air mix actuator terminal C?
CLIMATE CONTROL UNIT CONNECTOR
W U S Q O
V T R P
X
End Of Sie
DTC B1947, B2014
DTC B1947,
Evaporator temperature sensor system
B2014
• Evaporator temperature sensor malfunction
POSSIBLE
• Open or short circuit in wiring harness between climate control unit and evaporator temperature sensor
CAUSE
Diagnostic Procedure
STEP
• Inspect the evaporator temperature sensor. (See
1
07-40-9 EVAPORATOR TEMPERATURE
SENSOR INSPECTION.)
• Is it normal?
• Disconnect the climate control unit connector and
2
the evaporator temperature sensor connector.
• Is there an open circuit in the wiring harness
between the following terminals of the climate
control unit and the evaporator temperature
sensor?
— F— B
— C— A
• Is there a short circuit to ground in the wiring
3
harness between climate control unit terminal F
and evaporator temperature sensor terminal B?
07-02–8
ON-BOARD DIAGNOSTIC
INSPECTION
M K I G E C A
N L J D
H F B
INSPECTION
Yes Go to the next step.
No Replace the air mix actuator. (See 07-40-19 AIR MIX
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.)
AIR MIX ACTUATOR CONNECTOR
F
Yes Go to the next step.
No Replace the evaporator temperature sensor. (See 07-
40-8 EVAPORATOR TEMPERATURE SENSOR
REMOVAL/INSTALLATION.)
Yes Repair the wiring harness.
No Go to the next step.
Yes Repair the wiring harness.
No Connect the climate control unit connector, then go to
the next step.
id070200800900
ACTION
D C B A
*
id070200801000
ACTION