Mazda RX-8 Workshop Manual page 2543

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2011 - RX-8 - HVAC
NO.3 AIR INTAKE MODE DOES NOT CHANGE [MANUAL AIR CONDITIONER]
3 Air intake mode does not change.
DESCRIPTION
POSSIBLE CAUSE
When performing an asterisked (*) troubleshooting inspection, shake the wiring harness
and connectors while performing the inspection to discover whether poor contact points
are the cause of any intermittent malfunctions. If there is a problem, check to make sure
connectors, terminals and wiring harnesses are connected correctly and undamaged.
Diagnostic procedure
STEP
1* INSPECT TO SEE WHETHER MALFUNCTION (LACK OF
CONTINUITY) IS IN AIR INTAKE ACTUATOR, WIRING
HARNESS (BETWEEN A/C AMPLIFIER AND AIR INTAKE
ACTUATOR) OR ELSEWHERE
Turn ignition switch to ON position.
Test voltages at the following terminals of
A/C amplifier:
Air intake mode does not change when switching REC/FRESH mode.
Malfunction in air intake actuator (Steps 1—6)
Malfunction in air intake door (Step 7)
INSPECTION
Terminal 1I (24-pin, FRESH
motor drive signal)
Terminal 1J (24-pin,
RECIRCULATE motor drive
signal)
(See A/C AMPLIFIER
INSPECTION [MANUAL AIR
CONDITIONER].)
ACTION
YesGo to next step.
No Go to Step 3.