Mazda RX-8 Workshop Manual page 2461

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2011 - RX-8 - HVAC
DTC 12
DTC 12 Ambient temperature sensor system inspection
POSSIBLE
CAUSE
Diagnostic Procedure
STEP
INSPECT AMBIENT
1
TEMPERATURE SENSOR CIRCUIT
Is the resistance between terminals
2M and 2N of the A/C amplifier
connector (16-pin) as indicated
below?
INSPECT AMBIENT
2
TEMPERATURE SENSOR
Inspect the ambient temperature
sensor.
(See
SENSOR INSPECTION [FULL-AUTO
AIR
Is it normal?
Connector or terminal malfunction
Open circuit in wiring harness between A/C amplifier connector terminals
2M and 2N
Short to ground in wiring harness between A/C amplifier connector
terminals 2M and 2N
Ambient temperature sensor malfunction
INSPECTION
0.35—120 kilohms
AMBIENT TEMPERATURE
CONDITIONER].)
YesInspect the connection at the A/C amplifier
connector (16-pin).
No Go to the next step.
YesRepair the wiring harness.
No Replace the ambient temperature sensor.
(See AMBIENT TEMPERATURE SENSOR
REMOVAL/INSTALLATION [FULL-AUTO AIR
CONDITIONER].)
ACTION