Mazda RX-8 Workshop Manual page 2514

Disconnect A/C amplifier connector.
Test voltages at the following terminals of
A/C amplifier:
Are voltages approx. 0 V?
5 INSPECT TO SEE WHETHER MALFUNCTION IS IN
WIRING HARNESS (SHORT TO GROUND BETWEEN
A/C AMPLIFIER AND AIR INTAKE ACTUATOR) OR
ELSEWHERE
Turn ignition switch to LOCK position.
Inspect for continuity at the following
terminals between A/C amplifier and ground:
Is there continuity?
6 INSPECT AIR INTAKE LINK
Inspect air intake links.
Are above items normal?
7 INSPECT TO SEE WHETHER MALFUNCTION IS IN A/C
AMPLIFIER OR AIR INTAKE DOOR
Inspect blower unit air intake door.
Terminal 1I (24-pin, FRESH
motor drive signal)
Terminal 1J (24-pin,
RECIRCULATE motor drive
signal)
Terminal 1I (24-pin, FRESH
motor drive signal)
Terminal 1J (24-pin,
RECIRCULATE motor drive
signal)
Is there grease on link?
Are links securely and
properly installed?
Are links free of obstructions
and hindrances?
Is door free of obstructions,
cracks, and damage?
then go to Step 8.
YesRepair wiring harness between A/C
amplifier and air intake actuator,
then go to Step 8.
No Go to next step.
YesGo to next step.
No Apply grease to links. If any links
are damaged, replace air intake
actuator, then go to Step 8.
YesReplace A/C amplifier, then go to
next step.
No Remove obstruction, or install doors
in proper position. If any doors are
cracked or damaged, replace them,
then go to next step.