Mazda MX-6 1998, Workshop Manual

Page: 420 / 1282

MECHANICAL [FS]
DIAGNOSTIC TEST MODES
PID/DATA MONITOR AND RECORD
ACTIVE COMMAND MODES
DIAGNOSTIC TROUBLE CODE LIBRARY
SELECT ITEM AND PRESS TRIGGER TO START
READ/CLEAR CONTINUOUS DTCs
KOEO O N -DEM AND SELF-TEST
KOER O N -DEM AND SELF-TEST
ON BOARD SYSTEM READINESS TESTS
SELECT ITEM AND PRESS TRIGGER TO START
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9. Select the “RPM" and press the TRIGGER.
10. Wait until the electrical fans stop.
11. Verify that the idle speed is within specifications.
Specifications
MTX: 550— 850 (700 ± 150) rpm
ATX: 500— 800 (650 ± 150) rpm
12. If not within specifications, adjust the idle speed
as follows.
Caution
•
The air adjusting screw (AAS) must not be
adjusted, when the headlight HIGH system
is malfunctioning. Any improper
adjustment may affect engine
performance.
Note
• In order to activate the “KOER ON-DEMAND
SELF-TEST" after completion of the following
procedure, turn off the ignition switch at once,
then operate the “KOER ON-DEMAND
SELF-TEST”.
(1) Select “HDLMP” in the “PID/DATA MONITOR
AND RECORD” and press the TRIGGER.
(2) Verify that the “HDLMP” status changes from
OFF to ON when the headlight switch is
turned to the passing position. If it does not
change, inspect following harnesses,
connectors and terminals of the headlight
signal circuit.
• From battery to combination switch
• From combination switch to PCM
(3) Connect the inductive pick-up type tachometer
to the high tension lead.
Note
• The inductive pick-up type tachometer may
indicate double engine speed.
(4) Select the “ DIAGNOSTIC TEST MODES” and
press the TRIGGER.
(5) Select the “ KOER ON-DEMAND SELF-TEST”
and press the TRIGGER.
(6) Turn the headlight switch to the passing
position more than three times while each
“passing” for 2 seconds after the “ FOR
EXAMPLE BOO, PSP AND TCS” is
displayed.
(7) Make sure the engine speed is fixed.
Caution
•
The throttle adjusting screw is set at the
factory and must not be adjusted. Any
adjustment may affect engine
performance.
(
8
)
Adjust the idle speed to the following
specifications by turning the air adjusting
screw within 2 minutes after the headlight
switch is turned to passing position more than
three times.
Specifications
MTX: 550— 850 (700 ± 150) rpm
ATX: 500— 800 (650 ± 150) rpm
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