Mazda RX-8 Workshop Manual page 2483

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2011 - RX-8 - HVAC
DTC 19, 22
DTC 19, 22 Air mix actuator, airflow mode actuator (+5 V power supply) system inspection
POSSIBLE
CAUSE
Diagnostic Procedure
STEP
1 INSPECT +5 V POWER SUPPLY CIRCUIT FOR OPEN
CIRCUIT
Disconnect the A/C amplifier connector (16-pin) and the airflow
mode actuator connector.
Is there continuity between A/C amplifier connector (16-pin)
terminal 2P and airflow mode actuator connector terminal A?
2 INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO
GROUND
Is there a short circuit to ground in the wiring harness between
A/C amplifier connector (16-pin) terminal 2P and airflow mode
actuator connector terminal A?
INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO
3
GROUND
Is there a short circuit to ground in the wiring harness between
A/C amplifier connector (16-pin) terminal 2P and air mix
actuator connector terminal C?
Open circuit in wiring harness between A/C amplifier connector terminal 2P and airflow
mode actuator connector terminal A
Short to ground in wiring harness between A/C amplifier connector terminal 2P and airflow
mode actuator connector terminal A
Short to ground in wiring harness between A/C amplifier connector terminal 2P and air mix
actuator connector terminal C
INSPECTION ACTION
YesGo to the next step.
No Repair the wiring harness.
YesRepair the wiring harness.
No Go to the next step.
YesRepair the wiring harness.
No The system is normal at present.
(Clear the past malfunction from
memory.)