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 |
The throttle valve opening angle continues to vary greatly from the target opening angle (1 trip detection logic). |
|
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 |
Closed: 1 second Open: 0.6 seconds |
MIL Operation |
Immediate |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
Monitor runs whenever following DTCs not stored |
None |
System guard* judge condition |
ON |
*: System guard is ON 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 higher |
Throttle actuator fail |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
Either of following conditions A or B is met |
- |
A. Difference between commanded closed throttle position and current closed throttle position |
0.3 V or higher |
B. Difference between commanded open throttle position and current open throttle position |
0.3 V or higher |
CONFIRMATION DRIVING PATTERN
HINT:
Techstream Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
N/A |
|
HINT:
HINT:
FAIL-SAFE
When this DTC, as well as other DTCs relating to Electronic Throttle Control System (ETCS) malfunctions, is stored, 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° 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 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.
WIRING DIAGRAM
Refer to DTC P2102 (See page ).
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2119) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result |
Proceed to |
---|---|
DTC P2119 is output |
A |
DTC P2119 and other DTCs are output |
B |
HINT:
If any DTCs other than P2119 are output, troubleshoot those DTCs first.
B |
GO TO DTC CHART |
|
2. |
READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs (See page ).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1 and Throttle Position Command.
(h) 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.
B |
GO TO STEP 4 |
|
3. |
INSPECT THROTTLE BODY ASSEMBLY (RESISTANCE OF THROTTLE ACTUATOR) |
(a) Inspect the throttle body assembly (See page ).
NG |
GO TO STEP 7 |
|
4. |
INSPECT THROTTLE BODY ASSEMBLY (VISUALLY CHECK THROTTLE VALVE) |
(a) 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.
NG |
GO TO STEP 7 |
|
5. |
READ VALUE USING TECHSTREAM (THROTTLE POSITION) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs (See page ).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Turn the ignition switch to ON.
(g) Enter the following menus: Powertrain / Engine / Data List / Throttle Position No. 1, Throttle Position No. 2 and Throttle Position Command.
(h) Check the values displayed on the Techstream while wiggling the ECM wire harness.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes.
(j) 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 |
B |
GO TO STEP 8 |
|
6. |
REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - THROTTLE BODY) |
(a) As the DTC was stored due to a change in the contact resistance of the connector, repair or replace the wire harness or connector (See page ).
NEXT |
END |
7. |
REPLACE THROTTLE BODY ASSEMBLY |
(a) Replace the throttle body assembly (See page ).
HINT:
Perform "Inspection After Repair" after replacing the throttle body (See page ).
|
8. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P2119) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs (See page ).
(e) Turn the ignition switch off and wait for at least 30 seconds.
(f) Allow the engine to idle for 15 seconds or more.
(g) Fully depress and release the accelerator pedal several times quickly.
(h) Enter the following menus: Powertrain / Engine / Trouble Codes.
(i) Read the DTCs.
Result |
Proceed to |
---|---|
DTC is not output |
A |
DTC P2119 is output |
B |
A |
END |
B |
REPLACE ECM |
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Air conditioning system data and the Diagnostic Trouble Codes (DTCs) can
be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system
seems to be malfunctioning, use the Techstream to check for malf ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT COMPRESSOR WITH PULLEY (SOLENOID VALVE)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
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