5. Access EVAPCP and ECT PIDs.
6. Verify that the ECT PID is
more than 78°C {173°F}.
If the ECT PID reading indicates
less than 78°C {173°F}
, perform the ECT inspection.
7. Set the vehicle on the dynamometer or chassis roller.
8. Drive the vehicle
approx. 2,000 rpm for 30 sec.
or more.
If there is no vacuum, inspect the following:
Wiring harness and connector (Main relay-purge solenoid valve-PCM terminal 2C)
Purge solenoid valve
MAF, APP1, APP2, TP and LOAD PISs
If there is vacuum, inspect the following:
Vacuum hose (Purge solenoid valve-charcoal canister)
A/C CUT-OFF CONTROL SYSTEM INSPECTION
1. Start the engine.
2. Turn the A/C switch and the fan switch on.
3. Verify that the A/C compressor magnetic clutch actuates.
If it does not actuate, go to symptom troubleshooting
NO.23 A/C DOES NOT WORK
SUFFICIENTLY [LF]
.
4. Fully open the throttle valve and verify that the A/C compressor magnetic clutch does not actuate for
2-5
s.
If it actuates, inspect as follows:
A/C relay
Open or short to GND circuit in wiring harness and connectors (Ignition switch-A/C relay-
PCM terminal 11)
A/C related parts
APP1, APP2 PIDs
COOLING FAN CONTROL SYSTEM INSPECTION
If simulation function of M-MDS is used:
1. Connect the M-MDS or equivalent to DLC-2.
WARNING:
When the dynamometer or chassis roller is operating, there is a
possibility that the operator may come into contact with or be
caught up in the rotating parts, leading to serious injuries or
death. When performing work while the dynamometer or
chassis roller is operating, be careful not to come into contact
with or caught up in any of the rotating parts.
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:42:11 PM
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© 2005 Mitchell Repair Information Company, LLC.