Mazda RX-8 Workshop Manual page 2481

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2011 - RX-8 - HVAC
DTC 02, 18, 21
DTC 02, 18, 21 A/C amplifier (+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?
INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
2
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?
3 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 air mix actuator connector terminal C?
INSPECT +5 V POWER SUPPLY CIRCUIT FOR SHORT TO GROUND
4
Is there a short circuit to ground in the wiring harness between A/C amplifier
connector (16-pin) terminal 2P and solar radiation sensor connector terminal A?
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
Short to ground in wiring harness between A/C amplifier connector terminal 2P and solar radiation sensor
connector terminal A
Connector or terminal malfunction
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 Go to the next step.
YesRepair the wiring harness.
No Inspect the connection at the A/C
amplifier connector (16-pin).