Mazda RX-8 Workshop Manual page 2538

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2011 - RX-8 - HVAC
NO.5 WINDSHIELD FOGGED [MANUAL AIR CONDITIONER]
5 Windshield fogged.
DESCRIPTION
POSSIBLE
CAUSE
When performing an asterisked (*) troubleshooting inspection, shake the wiring harness
and connectors while doing 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 harness are connected correctly and undamaged.
Diagnostic procedure
STEP
1 COOL AIR BLOW OUT INSPECTION
When both A/C and fan switch in
A/C amplifier are on, does cool air
blow out from front vent?
2 INSPECT A/C AMPLIFIER POWER SUPPLY
FUSE FOR B+ SIGNAL
Is A/C amplifier power supply fuse
A/C compressor does not operate while airflow mode is in DEFROSTER or
HEAT/DEF modes.
Air intake mode does not change to FRESH while airflow mode is in
DEFROSTER or HEAT/DEF modes.
A/C amplifier (B+ signal) system malfunction (Steps 2, 4, 5)
Air intake actuator malfunction (Steps 3, 7)
A/C amplifier (RECIRCULATE, FRESH signal) system malfunction (Steps 9—
11)
Malfunction in blower unit air intake doors (Steps 12, 13)
INSPECTION
YesGo to next step.
No Go to Step 1 of troubleshooting index No.7.
YesGo to next step.
No Inspect for a short to ground on blown fuse
ACTION