Idle Adjustment; Idle Speed - Mazda 626 MX-6 Workshop Manual

Idle speed

Automatic
Control
Function
Engine Control Unit ---------

IDLE ADJUSTMENT

IDLE SPEED
Because the idle speed is controlled automati­
cally by the engine control unit through the idle
speed control (ISC) solenoid valve, usually it is
not necessary to check and adjust the idle
speed.
However, the idle speed should be adjusted
when rough idling occurs when the test connec­
tor (Green, 1-pin) is grounded.
86U04A-045
Preparation
1) Check the condition of the engine (plugs, leaks in
hoses, etc.).
2) Make sure all accessories are OFF.
3) Warm up the engine and run it for Three minutes
at 2,500—3,000 rpm in neutral.
4) Check the initial ignition timing and adjust if
necessary.
Inspection and Adjustment
. Ground the test connector with a jumper wire.
1
2. Check that the idle speed is within specification.
Idle speed: 750 ± 25 rpm MTX: Neutral
3. If the idle speed is not within specification, remove
. the blind cap from the throttle body and adjust it
by turning the air adjust screw.
4. After adjusting the idle speed, install the blind cap
and disconnect the jumper wire from the test con­
nector.
86U04A-048
IDLE ADJUSTMENT
ATX: P range
4A
4A-29