Mazda 2002 6 - Page 1214

ON-BOARD DIAGNOSTIC
U–63
U
Diagnostic Procedure
End Of Sie
DTC 07, 11, 13, 15, 19, 22 (WHEN TWO OR MORE DTCS ARE INDICATED AT THE SAME TIME)
A6E857001038W19
Diagnostic Procedure
End Of Sie
DTC 19, 22 (WHEN TWO OR MORE DTCS ARE INDICATED AT THE SAME TIME)
A6E857001038W20
Diagnostic Procedure
End Of Sie
STEP INSPECTION ACTION
1 • Disconnect climate control unit connector
(24-pin) and evaporator temperature sensor
connector.
• Is there continuity between terminal 1I of
climate control unit connector (24-pin) and
terminal A of evaporator temperature sensor
connector?
Yes Replace climate control unit.
No Repair wiring harness.
DTC 07, 11, 13,
15, 19, 22
Climate control unit (+5V power supply or sensor ground system) or sensor ground system
inspection
POSSIBLE
CAUSE
• Climate control unit malfunction
• Open circuit between climate control unit each temperature sensor
• Open circuit between climate control unit and air mix actuator
• Open circuit between climate control unit and airflow mode actuator
STEP INSPECTION ACTION
1 • Disconnect climate control unit connector
(24-pin) and evaporator temperature sensor
connector.
• Is there open circuit between terminal 1I of
climate control unit connector (24-pin) and
terminal A of evaporator temperature sensor
connector?
Yes Repair wiring harness.
No This system is normal at present. (Erase the past failure
from memory.)
DTC 19, 22 Climate control unit (+5V power supply) inspection
POSSIBLE
CAUSE
• Climate control unit malfunction
• Short circuit between climate control unit and solar radiation sensor
• Short circuit between climate control unit and air mix actuator
• Short circuit between climate control unit and airflow mode actuator
• Open circuit between climate control unit and solar radiation sensor
• Open circuit between climate control unit and air mix actuator
• Open circuit between climate control unit and airflow mode actuator
STEP INSPECTION ACTION
1 • Disconnect climate control unit connector
(24-pin) and airflow mode actuator
connector.
• Is there open circuit between terminal 1B of
climate control unit connector (24-pin) or
terminal B of airflow mode actuator
connector?
Yes Repair wiring harness.
No Go to next step.
2 • Is there short circuit to ground between
terminal 1B of climate control unit connector
(24-pin) and terminal B of airflow mode
actuator connector?
Yes Repair wiring harness.
No Go to next step.
3 • Is there short circuit to ground between
terminal 1B of climate control unit connector
(24-pin) and terminal B of air mix actuator
connector?
Yes Repair wiring harness.
No Go to next step.
4 • Is there short circuit to ground between
terminal 1B of climate control unit connector
(24-pin) and terminal A of solar radiation
sensor connector?
Yes Repair wiring harness.
No This system is normal at present. (Erase the past failure
from memory.)