P0122

DTC P0122 TP SENSOR




Component Description

NOTE: If DTC P0122, P0123 is displayed with DTC P0510, first perform the trouble diagnosis for DTC P0510. Refer to DTC P0510.

The throttle position sensor responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the ECM. In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.

Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

Consult-II Reference Value In Data Monitor Mode:

On Board Diagnosis Logic:

Fail-Safe Mode:

DTC Confirmation Procedure

NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 5 seconds before conducting the next test.

CAUTION: Always drive vehicle at a safe speed.

TESTING CONDITION:
- Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
- This test may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle.

WITH CONSULT-II







1. Turn ignition switch ON and select DATA MONITOR mode with CONSULT-II.
2. Start engine and maintain the following conditions for at least 5 consecutive seconds.
3. If 1st trip DTC is detected, "Diagnostic Procedure".

WITH GST
Follow the procedure With CONSULT-II.

EC-TPS-01:

Wiring Diagram


Diagnostic Procedure

Diagnostic Procedure Step 1:

Diagnostic Procedure Step 2 - 5:

Diagnostic Procedure Step 6 - 8:

Diagnostic Procedure Step 9 - 11:

Component Inspection

THROTTLE POSITION SENSOR

With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Turn ignition switch ON.
4. Select DATA MONITOR mode with CONSULT-II.







5. Check voltage of THRTL POS SEN under the following conditions.
Voltage measurement must be made with throttle position sensor installed in vehicle.

With GST
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Turn ignition switch ON.




4. Check voltage between ECM terminal 23 (Throttle position sensor signal) and ground.
Voltage measurement must be made with throttle position sensor installed in vehicle.