P2119

2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2119: Throttle Actuator Control Throttle Body Range / Performance

DTC P2119 - Throttle Actuator Control Throttle Body Range / Performance

DESCRIPTION

The Electronic Throttle Control System (ETCS) is composed of the throttle actuator that operates the throttle valve, the throttle position sensor that detects the opening angle of the throttle valve, the accelerator pedal position sensor that detects the accelerator pedal position, and the ECM that controls the ETCS system.
The ECM operates the throttle actuator to position the throttle valve for proper response to driver inputs. The throttle position sensor detects the opening angle of the throttle valve and provides this signal to the ECM so that the ECM can regulate the throttle actuator.






MONITOR DESCRIPTION

The ECM determines the "actual" throttle angle based on the throttle position sensor signal. The "actual" throttle position is compared to the "target" throttle position commanded by the ECM. If the difference of these 2 values exceeds a specified limit, the ECM interprets this as a fault in the ETCS system. The ECM turns on the MIL and sets a DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





FAIL-SAFE

When any of these DTCs, as well as other DTCs relating to Electronic Throttle Control System (ETCS) malfunctions are 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 7°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.

WIRING DIAGRAM





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.

PROCEDURE

1. CHECK ANY OTHER DTC OUTPUT (IN ADDITION TO DTC P2119)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch ON.
(c) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(d) Read the DTCs.
Result:





HINT: If any DTCs other than P2119 are output, troubleshoot those DTCs first.

B -- GO TO DTC CHART
A -- Continue to next step.
2. CHECK WHETHER DTC OUTPUT RECURS (DTC P2119)
(a) Connect the Techstream to the DLC3 [A].
(b) Turn the ignition switch ON [B].
(c) Turn the tester ON [C].
(d) Clear the DTCS [D].
(e) Allow the engine to idle for 15 seconds [E].
NOTE:
Exercise extreme care and take precautions at steps [F] and [G] below. Failure to do so may result in the vehicle unexpectedly rolling away.
(f) Securely apply the parking brake and move the gear selector lever to the D position [F].
(g) While depressing the brake pedal securely, fully depress the accelerator pedal for 5 seconds [G].
(h) On the tester, enter the following menus: Powertrain / Engine and ECT / Trouble Codes [H].
(i) Read the DTCs [I].
HINT: The output voltage of the throttle position sensor can be checked during step [G] using the Techstream. Variations in the output voltage indicate that the throttle actuator is in operation. To check the output voltage using the Techstream, enter the following menus: Powertrain / Engine and ECT / ETCS / Throttle Position No. 1.

OK:
No DTC output.
NG -- REPLACE THROTTLE WITH MOTOR BODY ASSEMBLY
OK -- NORMAL