Mazda RX-8 Manual page 1703

NO.5 WINDSHIELD FOGGED
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.
5 Windshield fogged.
DESCRIPTION
POSSIBLE
CAUSE
Diagnostic procedure
STEP INSPECTION
COOL AIR BLOW OUT INSPECTION
1
When both A/C and fan switch in A/C amplifier
•
are on, does cool air blow out from front vent?
INSPECT A/C AMPLIFIER POWER SUPPLY
FUSE FOR B+ SIGNAL
2
Is A/C amplifier power supply fuse for B+ signal
•
normal?
3 INSPECT AIR INTAKE ACTUATOR
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)
•
ACTION
Yes Go to next step.
Go to Step 1 of troubleshooting index
No
No.7.
Yes Go to next step.
Inspect for a short to ground on blown
fuse circuit.
No Repair or replace as necessary.
•
Install appropriate amperage
fuse.
Yes Go to next step.
(w) RX-8 - HVAC
Page 74