Mazda 2002 6 - Page 1208

ON-BOARD DIAGNOSTIC
U–57
U
Diagnostic Procedure
End Of Sie
DTC 07
A6E857001038W04
Diagnostic Procedure
End Of Sie
DTC 10
A6E857001038W05
Diagnostic Procedure
End Of Sie
DTC 11
A6E857001038W06
STEP INSPECTION ACTION
1 • Is resistance between terminals 1I and 1M of
climate control unit connector (24-pin) as
indicated below?
— 137 ohms—220 kilohms
Yes Replace climate control unit.
No Go to next step.
2 • Inspect cabin temperature sensor.
• Is it okay?
Yes Repair wiring harness.
No Replace cabin temperature sensor.
DTC 07 Cabin temperature sensor system inspection
POSSIBLE
CAUSE
• Cabin temperature sensor malfunction
• Climate control unit malfunction
• Open or short circuit between cabin temperature sensor and climate control unit
STEP INSPECTION ACTION
1 • Inspect cabin temperature sensor.
• Is it okay?
Yes Go to next step.
No Replace cabin temperature sensor.
2 • Disconnect climate control unit connector
(24-pin) and cabin temperature sensor
connector.
• Is there open circuit between the following
terminals of climate control unit connector
(24-pin) and cabin temperature sensor
connector?
— 1I—A
— 1M—B
Yes Repair wiring harness.
No Go to next step.
3 • Is there short circuit to ground between
terminal 1M of climate control unit connector
(24-pin) and B of cabin temperature sensor
connector?
Yes Repair wiring harness.
No Connect climate control unit connector, then go to next step.
4 • Turn the ignition switch to ON position.
• Measure voltage at terminal the following
terminal 1M of climate control unit connector
(24-pin).
• Is voltage approximately 5V?
Yes This system is normal at present. (Erase the past failure
from memory.)
No Replace climate control unit.
DTC 10 Evaporator temperature sensor system inspection
POSSIBLE
CAUSE
• Evaporator temperature sensor malfunction
• Climate control unit malfunction
• Open or short circuit between evaporator temperature sensor and climate control unit
STEP INSPECTION ACTION
1 • Is resistance between terminals 1I and 1Q of
climate control unit connector (24-pin) as
indicated below?
— 128 ohms—179 kilohms
Yes Replace climate control unit.
No Go to next step.
2 • Inspect evaporator temperature sensor.
• Is it okay?
Yes Repair wiring harness.
No Replace evaporator temperature sensor.
DTC 11 Evaporator temperature sensor system inspection
POSSIBLE
CAUSE
• Evaporator temperature sensor malfunction
• Climate control unit malfunction
• Open or short circuit between evaporator temperature sensor and climate control unit