Mazda 626 Station Wagon, Руководство по ремонту, Страница: 174 / 577

TROUBLESHOOTING
10. Select the following PIDs.
• SEGRP
• RPM
• VS
• TP V
• ECT V
11. Let the vehicle idle and verify that the SEGRP
value is 0.
12. Depress the accelerator pedal and verify that the
SEGRP value increases.
• If the SEGRP value will not increase, inspect
the VS, TP V and ECT V PIDs (See F1 -25
PI D/DATA Monitor Table).
13. Stop the vehicle and verify that the SEGRP is
returned 0.
Purge Control Inspection
1. Start the engine.
2. Disconnect the vacuum hose between the purge
solenoid valve and the charcoal canister.
3. Put a finger to the purge solenoid valve and verify
that there is no vacuum applied when the engine
is cold.
• If there is a vacuum, inspect the following.
— Wiring harness and connectors
(Purge solenoid valve - PCM terminal 67)
— Purge solenoid valve
Note
• Following procedure is only for sedan and
wagon MTX.
4. Warm up the engine to the normal operating
temperature.
5. Stop the engine.
6. Connect the
SSTs (NGS tester) to DLC.
PROGRAM CARD
NGS SET
7. Turn the ignition switch on.
8. Select the PID/DATA MONITOR AND RECORD
function on the NGS display.
9. Select ECT PID.
10. Verify that the engine coolant temperature is
above 60 °C {140° F}.
• If the SSTs (NGS tester) indicates below 60 °C
{140°F}, carry out the ECT sensor inspection.
11. Select the SIMULATION TEST function on the
NGS display.
12. Select PRGV PID.
13. Press START.
14. Increase the duty value of the purge solenoid
valve to 50% and inspect if the operation sound of
the valve is heard.
• If the operation sound is heard, inspect for
loose or damaged vacuum hose. (Intake
manifold - purge solenoid valve - charcoal
canister)
• If the operation sound is not heard, carry out
the purge solenoid valve inspection.
A/C Cut-off Control Inspection
For sedan and wagon MTX
1. Start the engine.
2. Turn the A/C switch and fan switch on.
3. Verify that the A/C compressor magnetic clutch
actuates.
4. If it does not actuate, go to symptom
troubleshooting No.22 “A/C does not work”.
5. Fully open the throttle valve and verify that the A/C
compressor magnetic clutch does not actuate for
2—5 seconds.
• If it actuates, inspect the following.
(1) Connect the SSTs (NGS tester) to DLC.
PROGRAM CARD
(2) Turn the A/C switch off.
(3) Turn the ignition switch on.
(4) Select the SIMULATION TEST function on the
NGS display.
(5) Select IG ON TEST mode.
(6) Select A/C RLY PID
(7) Press START.
(8) Turn the A/C relay from off to on and inspect if
the operation sound of the relay is heard.
• If the operation sound is heard, inspect TP
V PID.
• If the operation sound is not heard, inspect
the following.
— A/C relay
— Open or short to GND circuit in wiring
harnesses and connectors
(Main relay - A/C relay - PCM terminal
1S)
— A/C related parts
F1-153