Hint:
This dtc relates to the throttle position (tp) sensor.
Description
Refer to dtc p0120 (see page es-114).
Monitor description
The ecm uses the tp sensor to monitor the throttle valve opening angle.
This sensor transmits two signals: vta1 and vta2. Vta1 is used to detect the throttle opening angle and vta2 is used to detect malfunctions in vta1. The ecm performs several checks to confirm the proper operation of the tp sensor and vta1.
For each throttle opening angle, a specific voltage difference is expected between the outputs of vta1 and vta2. If the output voltage difference between the two signals deviates from the normal operating range, the ecm interprets this as a malfunction of the tp sensor. The ecm illuminates the mil and sets the dtc.
If the malfunction is not repaired successfully, the dtc is set 2 seconds after the engine is next started.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Fail-safe
When this dtc, as well as other dtcs relating to etcs (electronic throttle control system) malfunctions, is set, the ecm enters fail-safe mode. During fail-safe mode, the ecm cuts the current to the throttle actuator off, and the throttle valve is returned to a 6° throttle angle by the return spring. The ecm then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a minimal speed. If the accelerator pedal is depressed firmly and gently, the vehicle can be driven slowly.
Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.
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.
Evaporative emission leak detection pump
Dtc summary
Hint:
The leak detection pump is built into the canister pump module.
Description
The description can be found in the evap (evaporative emission) system (see
page es-335).
Inspection procedure
Refer to the evap system (see page es-340).
Monitor description
5 Hours* afte ...
Turn signal lever
Operating instructions
Right turn
Lane change to the right (move
the lever partway and release
it)
the right hand signals will flash 3
times.
Lane change to the left (move
the lever partway and release
it)
the left hand signals will flash 3
times.
Left turn
Turn signals ...
Inspection
Inspect crankshaft position sensor
Measure the resistance of the sensor.
Standard resistance
Notice:
Cold and hot mean the temperature of the coils
themselves. Cold is from -10 to 50°c (14 to
122°f) and hot is from 50 to 100°c (122 to
212°f).
If the result is not as specif ...