1. Stop the engine.
2. Remove the EGR valve.
3. Connect the EGR valve connector.
4. Turn the ignition switch to the ON position.
5. Increase the step value of EGR valve
from 0 to 52
using SEGRP PID.
6. Verify that the EGR valve operates according to SEGRP PID.
If the EGR valve is operated, clean the EGR valve and EGR gas passage.
If the EGR valve will not operate, replace the EGR valve.
5. Start the engine and warm it up completely.
6. Access the following PIDs.
ECT, RPM, SEGRP, APP1, APP2, TP, VSS
7. Idle the vehicle and verify that the SEGRP value is
0.
8. Put the vehicle drive.
9. Depress the accelerator pedal and verify that the SEGRP value is increased.
If the SEGRP value will not increase, inspect the VSS, TP and ECT PIDs.
(See
PCM INSPECTION [LF]
.)
10. Stop the vehicle and verify that the SEGRP value is returned to
0.
If simulation function of M-MDS is not used:
1. Crank the engine and verify that EGR valve operation (initial operation) sound is heard.
If the operation sound is not heard, connect the M-MDS or equivalent to the DLC-2 and verify that
the DTC P0403 is shown. Perform DTC inspection. (See
DTC TABLE [LF]
.)
2. Start the engine and idle it.
3. Warm up the engine to normal operating temperature.
4. Access the following PIDs:
ECT, RPM, SEGRP_DSD, APP1, APP2, VSS
5. Idle the vehicle and verify that the SEGRP value is 0.
6. Put the vehicle in drive.
7. Depress the accelerator pedal and verify that the SEGRP_DSD value is increased.
If the EGR valve increases, inspect the following:
EGR valve (stuck open or close)
Wiring harness and connectors (Main relay-EGR valve-PCM)
If the SEGRP_DSD value does not increase, inspect the VSS, APP1, APP2, TP and ECT PIDs.
(See
PCM INSPECTION [LF]
.)
8. Stop the vehicle and verify that the SEGRP value returns to 0.
PURGE CONTROL SYSTEM INSPECTION
2007 Mazda MX-5 Miata Sport
2007 ENGINE PERFORMANCE Symptom Troubleshooting - MX-5 Miata
Microsoft
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