TYPICAL MALFUNCTION THRESHOLDS
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119)
READ VALUE USING TECHSTREAM (THROTTLE POSITION)
INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR)
INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE)
READ VALUE USING TECHSTREAM (THROTTLE POSITION)
REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY - ECM)
CHECK WHETHER DTC OUTPUT RECURS (DTC P2119)
DTC P2119 Throttle Actuator Control Throttle Body Range / Performance |
DESCRIPTION
The electronic throttle control system is composed of the throttle actuator, throttle position sensor, accelerator pedal position sensor, and ECM. The ECM operates the throttle actuator to regulate the throttle valve in response to driver inputs. The throttle position sensor detects the opening angle of the throttle valve, and provides the ECM with feedback so that the throttle valve can be appropriately controlled by the ECM.| DTC No. | DTC Detection Condition | Trouble Area |
| P2119 | Throttle valve opening angle continues to vary greatly from target opening angle (1 trip detection logic) |
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MONITOR DESCRIPTION
The ECM determines the actual opening angle of the throttle valve from the throttle position sensor signal. The actual opening angle is compared to the target opening angle commanded by the ECM. If the difference between these two values is outside the standard range, the ECM interprets this as a malfunction in the electronic throttle control system. The ECM then illuminates the MIL and stores the DTC.MONITOR STRATEGY
| Related DTCs | P2119: Electronic throttle control system malfunction |
| Required Sensors/Components (Main) | Throttle actuator (throttle body) |
| Required Sensors/Components (Related) | - |
| Frequency of Operation | Continuous |
| Duration | 1 second |
| MIL Operation | Immediate |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever following DTCs are not present | None |
| System guard* judge condition | On |
| *System guard set when the following conditions are met: | - |
| Throttle actuator | On |
| Throttle actuator duty calculation | Executing |
| Throttle position sensor fail | Not detected |
| Throttle actuator current-cut operation | Not executing |
| Throttle actuator power supply | 4 V or more |
| Throttle actuator fail | Not detected |
TYPICAL MALFUNCTION THRESHOLDS
| Either of following conditions A or B is met | - |
| A. Commanded closed throttle position - current closed throttle position | 0.3 V or more |
| B. Commanded open throttle position - current open throttle position | 0.3 V or more |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and turn the Techstream on [A].
- Start the engine.
- Idle the engine for 20 seconds.
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [B].
- Read the pending DTCs.
- HINT:
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P2119.
- Check the DTC judgment result.
Techstream Display Description NORMAL - DTC judgment completed
- System normal
ABNORMAL - DTC judgment completed
- System abnormal
INCOMPLETE - DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A - Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
- HINT:
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows INCOMPLETE or N/A, fully depress and release the accelerator pedal 3 times, and then check the DTC judgment result [C].
- DTC judgment completed
- If no pending DTC is output, perform a universal trip and check for permanent DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).
- HINT:
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
FAIL-SAFE
When this DTC, as well as other DTCs relating to 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, and the throttle valve is returned to a 6.5° 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 running at a minimal speed. If the accelerator pedal is depressed gently, the vehicle can be driven slowly.Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned to off.
WIRING DIAGRAM
Refer to DTC P2102 (Link).INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
| 1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
- Result:
Result Proceed to P2119 A P2119 and other DTCs B
- HINT:
- If any DTCs other than P2119 are output, troubleshoot those DTCs first.
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| A | |
| 2.READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Throttle / Throttle Position No. 1 and Throttle Position Command.
Check the values displayed on the Techstream while fully depressing and releasing the accelerator pedal quickly.
- Result:
Result Proceed to Throttle Position No. 1 does not change A Throttle Position No. 1 changes even a little B
- HINT:
- When a DTC is output, the system changes to fail-safe mode. Therefore, only use the data up until the time the DTC is stored for confirmation.
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| A | |
| 3.INSPECT THROTTLE BODY (RESISTANCE OF THROTTLE ACTUATOR) |
Inspect the throttle body (COROLLA_ZRE142 RM0000017UB03FX.html).
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| OK | |
| 4.INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE) |
Check for contamination between the throttle valve and housing. If necessary, clean the throttle body. Also, check that the throttle valve moves smoothly.
- OK:
- Throttle valve is not contaminated with foreign objects and moves smoothly.
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| OK | |
| 5.READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Engine and ECT / Data List / Gas Throttle / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.
Check the values displayed on the Techstream while wiggling the ECM wire harness.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Check for DTCs.
- Result:
Result Proceed to Value in Data List changes when wire harness is wiggled, or DTC is output A Other than above B
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| A | |
| 6.REPAIR OR REPLACE HARNESS OR CONNECTOR (THROTTLE BODY - ECM) |
As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector (COROLLA_ZRE142 RM000000UZ30C8X.html).
| NEXT | ||
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| 7.REPLACE THROTTLE BODY |
Replace the throttle body (COROLLA_ZRE142 RM0000017UC03CX.html).
| NEXT | |
| 8.CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs (COROLLA_ZRE142 RM000000PDK0ZBX.html).
Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
- Result:
Result Proceed to No output A P2119 B
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| A | ||
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