Mazda 13B-MSP Technical Information download pdf (Page 49)

Powertrain Engines

Service Procedures

Adjusting the Idle Speed

• On the Mazda3 with ZJ and Z6 engine the idle speed must be adjusted at specified

service intervals using M-MDS. To perform the procedure select the PIDs RPM (Rpm)

and test# (Mode) in the M-MDS Datalogger, and set the PID test# to ON. Now the PCM

(Powertrain Control Module) uses a fixed value for the ignition timing control, so that the

idle speed can be adjusted on the air adjusting screw of the throttle body.

NOTE: The throttle body is equipped with a stop screw, which is used by the manufacturer

to adjust the fully closed throttle position. Any adjustment of the stop screw is

prohibited and can cause malfunctions such as sticking of the throttle valve.

L1001.4_01152

1 Air adjusting screw 3 Throttle body

2 Throttle valve

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Mazda 13B-MSP Technical Information Page 49