P2135
DTC P2135
CIRCUIT DESCRIPTION
The throttle position (TP) sensors 1 and 2 are located within the throttle body assembly. The TP sensors share a common 5-Volt reference circuit and a common low reference circuit. The 5-Volt reference circuit is also shared with the accelerator pedal position (APP) sensor 2. The 5-Volt reference voltage is supplied on two separate engine control module (ECM) terminals, but the terminals are connected internally to the same voltage supply. Each TP sensor has an individual signal circuit, which provides the ECM with a signal voltage proportional to throttle the plate movement. When the throttle plate is in the closed position, the TP sensor 1 signal voltage is near the low reference and increases as the throttle plate is opened. The TP sensor 2 signal voltage at closed throttle is near the 5-Volt reference and decreases as the throttle plate is opened. If the ECM detects a difference from the predicted range between sensor 1 and sensor 2, DTC P2135 sets.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC P2135 Throttle Position (TP) Sensor 1-2 Correlation
CONDITIONS FOR RUNNING THE DTC
- The ignition is ON.
- DTC P2135 runs continuously once the above condition is met.
CONDITIONS FOR SETTING THE DTC
The ECM detects that the difference between TP sensor 1 and TP sensor 2 is more than the predicted value for less than 1 second.
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 MIL/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.
TEST
