Description
The idling speed is controlled by the etcs (electronic throttle control system). The etcs is comprised of: 1) the one valve type throttle body; 2) the throttle actuator, which operates the throttle valve; 3) the throttle position (tp) sensor, which detects the opening angle of the throttle valve; 4) the accelerator pedal position (app) sensor, which detects the accelerator pedal position; and 5) the ecm, which controls the etcs. Based on the target idling speed, the ecm controls the throttle actuator to provide the proper throttle valve opening angle.
Monitor description
The ecm monitors the idling speed and idling air flow volume to conduct idle speed control (isc). The ecm determines that the isc system is malfunctioning if the following conditions apply:
Example: if the actual idling speed varies from the target idling speed by more than 200 rpm* 5 times during a drive cycle, the ecm illuminates the mil and sets the dtc.
Hint:
*: Threshold idling speed varies with engine load.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Inspection procedure
Hint:
Hint:
If any dtcs other than p0505 are output, troubleshoot those dtcs first.
Ok: pcv hose is connected correctly and is not damaged.
Ok:
no leakage from air induction system.
Ok: throttle valve is not contamainated with foreign objects and moves smoothly.
Active test
Hint:
Performing an active test enables components
including the relays, vsv (vacuum switching valve) and
actuators, to be operated without removing any parts.
The active test can be performed with the intelligent
tester. Performing the active test as the first step of
troubleshooting is one ...
Wheels
If a wheel is bent, cracked or
heavily corroded, it should
be replaced. Otherwise, the
tire may separate from the
wheel or cause a loss of
handling control.
Wheel selection
When replacing wheels, care
should be taken to ensure that
they are equivalent to those
removed in load capacity, diameter,
rim ...
Front axle hub
Components (2005/11-2006/01)
Components (2006/01- )
On-vehicle inspection
Check front axle hub bearing
Remove the front wheel.
Disconnect the front disc brake cylinder (see page
br-40).
Remove the front disc.
Inspect the axle hub backlash.
Using a dial indicator ...