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DTC P0222: Throttle Position Sensor (sub) Circuit Low Input










CIRCUIT OPERATION




TECHNICAL DESCRIPTION




DESCRIPTIONS OF MONITOR METHODS




MONITOR EXECUTION




MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)


Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
Sensor (The sensor below is determined to be normal)

DTC SET CONDITIONS


Logic Flow Chart

Check Condition
Judgement Criterion

OBD-II DRIVE CYCLE PATTERN




TROUBLESHOOTING HINTS (The most likely causes for this code to be set are:)




DIAGNOSIS


Required Special Tools:
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)

    • MB991824: V.C.I.
    • MB991827: USB Cable
    • MB991910: Main Harness A
  • MB991658: Test Harness

STEP 1. Using scan tool MB991958, check data list item 15: Throttle Position Sensor (sub).



caution To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
(1)Connect scan tool MB991958 to the data link connector.
(2)Turn the ignition switch to the "ON" position.
(3)Detach the intake air hose at the throttle body.
(4)Disconnect the connector of the throttle position sensor.
(5)Use test harness special tool (MB991658) to connect only terminals No. 3, No. 4, No. 5, and No. 6.
(6)Set scan tool MB991958 to the data reading mode for item 15, Throttle Position Sensor (sub).

  • Output voltage should be 4.0 volts or more when the throttle valve is fully closed with your finger.
  • Output voltage should be 1.0 volt or less when the throttle valve is fully open with your finger.
(7)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the sensor operating properly?

It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .

Go to Step 2.

STEP 2. Check harness connector B-10 at throttle position sensor for damage.


Q. Is the harness connector in good condition?

Go to Step 3.
Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection . Then go to Step 11.

STEP 3. Measure the sensor supply voltage at throttle position sensor harness side connector B-10.


(1)Disconnect the connector B-10 and measure at the harness side.
(2)Turn the ignition switch to the "ON" position.

(3)Measure the voltage between terminal No. 5 and ground.

  • Voltage should be between 4.9 and 5.1 volts.
(4)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the measured voltage between 4.9 and 5.1 volts?

Go to Step 7.

Go to Step 4.

STEP 4. Check harness connector B-108 at ECM for damage.


Q. Is the harness connector in good condition?

Go to Step 5.
Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection . Then go to Step 11.

STEP 5. Check for open circuit and short circuit to ground between throttle position sensor connector B-10 (terminal No. 5) and ECM connector B-108 (terminal No. 12).


Q. Is the harness wire in good condition?

Go to Step 6.
Repair it. Then go to Step 11.

STEP 6. Using scan tool MB991958, check data list item 15: Throttle Position Sensor (sub).


(1)Turn the ignition switch to the "ON" position.
(2)Detach the intake air hose at the throttle body.
(3)Disconnect the connector of the throttle position sensor.
(4)Use test harness special tool (MB991658) to connect only terminals No. 3, No. 4, No. 5, and No. 6.
(5)Set scan tool MB991958 to the data reading mode for item 15, Throttle Position Sensor (sub).

  • Output voltage should be 4.0 volts or more when the throttle valve is fully closed with your finger.
  • Output voltage should be 1.0 volt or less when the throttle valve is fully open with your finger.
(6)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the sensor operating properly?

It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .
Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, ID Code Registration Necessity Judgment Table <Vehicles with KOS> or GROUP 42C, ID Codes Registration Judgment Table <Vehicles with WCM> . Then go to Step 11.

STEP 7. Check harness connector B-108 at ECM for damage.


Q. Is the harness connector in good condition?

Go to Step 8.
Repair or replace it. Refer to GROUP 00E, Harness Connector Inspection . Then go to Step 11.

STEP 8. Check for harness damage between throttle position sensor connector B-10 (terminal No. 5) and ECM connector B-108 (terminal No. 12).


Q. Is the harness wire in good condition?

Go to Step 9.
Repair it. Then go to Step 11.

STEP 9. Check for open circuit, short circuit to ground and harness damage between throttle position sensor connector B-10 (terminal No. 6) and ECM connector B-108 (terminal No. 11).


Q. Is the harness wire in good condition?

Go to Step 10.
Repair it. Then go to Step 11.

STEP 10. Replace the throttle body assembly.


(1)Replace the throttle body assembly.
(2)Turn the ignition switch to the "ON" position.
(3)After the DTC has been deleted, read the DTC again.
(4)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is DTC P0222 set?

Replace the ECM. When the ECM is replaced, register the ID code. Refer to GROUP 42B, ID Code Registration Necessity Judgment Table <Vehicles with KOS> or GROUP 42C, ID Codes Registration Judgment Table <Vehicles with WCM> . Then go to Step 11.
The inspection is complete.

STEP 11. Using scan tool MB991958, read the diagnostic trouble code (DTC).


(1)Turn the ignition switch to the "ON" position.
(2)After the DTC has been deleted, read the DTC again.
(3)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is DTC P0222 set?

Retry the troubleshooting.
The inspection is complete.