Mazda RX-8 Workshop Manual page 2490

< Previous Next >
2011 - RX-8 - HVAC
NO.7 NO COOL AIR [MANUAL AIR CONDITIONER]
7 No cool air
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, inspect to make sure
connectors, terminals and wiring harnesses are connected correctly and undamaged.
Diagnostic procedure
STEP
1 AIR FLOW INSPECTION
Does air blow form vents?
Magnetic clutch does not operate.
Malfunction in PCM A/C cut control system (Step 3)
Open or short circuit in wiring harness between evaporator temperature
sensor and A/C amplifier (Step 5)
Malfunction in A/C amplifier (Step 6)
Malfunction in evaporator temperature sensor (internal circuit malfunction)
(Step 6)
Malfunction in refrigerant pressure switch (Steps 7, 9—11)
Malfunction in PCM (A/C signal) (Step 8)
Malfunction in PCM (IG1 signal) (Steps 12, 13)
Malfunction in A/C compressor (Step 14)
Malfunction in A/C relay (Steps 16—18)
INSPECTION
YesGo to next step.
No Go to Step 1 of troubleshooting indexes No.1
ACTION