Hint:
These dtcs relate to the accelerator pedal position (app) sensor.
Description
Hint:
This etcs (electronic throttle control system) does not use a throttle cable.
The app sensor is mounted on the accelerator pedal bracket and has 2 sensor circuits: vpa (main) and vpa2 (sub). This sensor is a non-contact type it uses hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals vpa and vpa2 of the ecm, varies between 0 v and 5 v in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from vpa indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from vpa2 conveys the status of the vpa circuit and is used to check the app sensor itself.
The ecm monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from vpa and vpa2, and controls the throttle actuator according to these signals.
Hint:
When any of these dtcs are set, check the app sensor voltage by selecting the following menu items on the intelligent tester: diagnosis / enhanced obd ii / data list / primary / accel pos #1 and accel pos #2.
Hint:
Monitor description
When either output voltage of vpa or vpa2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is less than the threshold, the ecm determines that there is a malfunction in the app sensor. The ecm then illuminates the mil and sets a dtc.
Example: when the output voltage of vpa drops below 0.4 V for more than 0.5 Seconds when the accelerator pedal is fully depressed, dtc p2122 is set.
If the malfunction is not repaired successfully, a dtc is set 2 seconds after the engine is next started.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Component operating range
Fail-safe
When any of dtcs p2120, p2121, p2122, p2123, p2125, p2127, p2128 and p2138 are set, the ecm enters fail-safe mode. If either of the 2 sensor circuit malfunctions, the ecm uses the remaining circuit to calculate the accelerator pedal position to allow the vehicle to continue driving. If both of the circuits malfunction, the ecm regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.
Fail-safe mode continues until a pass condition is detected, and the ignition switch is turned off.
Wiring diagram
Inspection procedure
Hint:
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
Standard voltage
Standard resistance (check for open)
Standard resistance (check for short)
Standard voltage
Exhaust gas precautions
Harmful substance to the
human body is included in
exhaust gases if inhaled.
WARNING
Exhaust gases contain harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caus ...
Selecting shift ranges in the s position
To enter s mode, shift the shift lever to s. Shift ranges can be selected
by operating the shift lever, allowing you to drive in the shift range of
your choosing. The shift range can be selected by the shift lever.
Upshifting
Downshifting
The selected shift range, from 1 to
6, will be di ...
Removal (2006/01- )
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove roof headlining assembly
Remove the roof headlining (see page ir ...