Mazda RX-8 Workshop Manual page 139

(See ENGINE CONTROL SYSTEM
OPERATION INSPECTION [13B-
MSP].)
Does the electronic throttle
control system operate properly?
VERIFY THROTTLE VALVE
7
Turn the ignition switch off.
Remove the throttle valve with
connector connected.
Access the ETC_DSD PID using
the M-MDS.
(See ON-BOARD DIAGNOSTIC
TEST [13B-MSP].)
Turn the ignition switch to the ON
position (engine off).
Move the throttle valve using the
ETC_DSD PID simulation function.
Dose the throttle valve move
smoothly?
VERIFY TROUBLESHOOTING OF DTC P050A
8
COMPLETED
Make sure to reconnect all
disconnected connectors.
Clear the DTC from the PCM
memory using the M-MDS.
(See AFTER REPAIR PROCEDURE
[13B-MSP].)
Cool down the engine.
Start the engine and warm it up
normal operating temperature.
Retrieve the DTC using the M-
MDS.
Is the PENDING CODE for this
DTC present?
VERIFY AFTER REPAIR PROCEDURE
9
Perform the "AFTER REPAIR
PROCEDURE".
according to the inspection results, then go to
Step 8.
YesGo to the next step.
No Clean the throttle valve and retest.
If the problem does not resolve:
Replace the throttle body, then
go to the next step.
(See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION
[13B-MSP].)
YesReplace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [13B-
MSP].)
No Go to the next step.
YesGo to the applicable DTC inspection.
(See DTC TABLE [13B-MSP].)