P2119

DTC P2119






Circuit Description

The engine control module (ECM) controls the throttle blades by applying a varying voltage to the throttle valve motor. The ECM monitors the actual throttle blade position using throttle position (TP) sensor 1 and 2. If the ECM detects the throttle blade did not return to the rest position within a calibrated time, DTC P2119 sets.

Conditions for Running the DTC

- The ignition is ON.
- The vehicle speed is 0 km/h (0 mph).
- The engine speed is less than 250 RPM.
- The engine coolant temperature (ECT) is 5-100°C (41-212°F).
- The intake air temperature (IAT) is more than 5°C (41°F).
- The battery voltage is more than 10 volts.
- The accelerator pedal position (APP) is less than 15 percent.

Conditions for Setting the DTC

The control module determines that the throttle valves are not in the closed position.

Action Taken When the DTC Sets

- The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
- The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame and/or the Failure Records.
- The control module commands the TAC system to operate in the Reduced Engine Power mode.
- A message center or an indicator displays Reduced Engine Power.
- Under certain conditions the control module commands the engine OFF.

Conditions for Clearing the DTC

- The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
- A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
- A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
- Clear the MIL and the DTC with a scan tool.

Diagnostic Aids

- Inspect for a condition in which the throttle valves may have been held open.
- Inspect for conditions in which ice may have formed in the throttle bore.
- The throttle valves are spring loaded to a slightly open position. The throttle valves should be open approximately 3-5 percent. This is referred to as the rest position. The throttle valves should not be completely closed, nor should they be open any more than the specified amount. The throttle valves should move open and to the closed position without binding under the normal spring pressure. The throttle should NOT be free to move open or closed WITHOUT spring pressure.
- Important: Operating the throttle blade with the Throttle Blade Control function of the scan tool may cause additional DTCs to set. DO NOT attempt to diagnose DTCs set during this function.
- The scan tool has the ability to operate the throttle control system using the Throttle Position function located in the TAC system menu. This function will operate the throttle valve through the entire range in order to determine if the throttle body and system operate correctly.
- For intermittent conditions, Intermittent Malfunctions

Test Description

The numbers below refer to the step numbers on the diagnostic table.

3. The throttle valves are spring loaded in a slightly open position and should move in either direction without binding. The throttle valves should always be under spring pressure.
6. When the ignition is turned ON, the ECM operates the throttle control motor to verify the integrity of the system prior to start-up. This can be seen by the momentary flash of the test lamp as the ignition is turned ON.