P2167

P2167-ACCELERATOR PEDAL POSITION SENSOR 2 MAXIMUM STOP PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information.





Theory of Operation

The Electronic Throttle Control (ETC) system uses two Accelerator Pedal Position (APP) Sensors to monitor the accelerator pedal position. The APP Sensors 1 and 2 are integrated into one assembly located at the pedal assembly. Each sensor has a 5-volt reference circuit, a low reference circuit, and a signal circuit. The Powertrain Control Module (PCM) reads the two signals individually and then compares the two signals as a redundant check of the throttle position. One of the sensors will fluctuate between 0 volts and 5.0 volts and the other sensor will fluctuate between 0 volts and 2.5 volts. The fluctuation of the two sensors should move proportionately. E.G. When operating properly, the voltage reading of the sensor operating on the 5.0 volt scale will always approximately two time the voltage reading of the sensor on the 2.5 volts scale.

- When Monitored:
With the ignition on. During in plant mode the APP Sensors need to be checked to make sure that idle and full pedal travel can be reached on both sensors.

- Set Condition:
APPS No.2 has failed to achieve the required maximum value during In Plant testing. One trip fault and the code will set within five seconds. Engine will only idle. ETC light will illuminate.





Diagnostic Test

1. IN PLANT TEST FAILURE
1. Ignition on, engine not running.

NOTE: This DTC is set when the APP Sensors are learned in plant but do not reach the Minimum or Maximum voltage range.

2. With a scan tool, select View DTCs.
3. With the scan tool, erase DTCs.
4. Start the engine.
5. With the scan tool, view DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

2. APPS RELEARN
1. With a scan tool and perform the Reset Accelerator Pedal Adaptives routine.
2. Next, erase DTCs.
3. Start the engine.

Does the DTC return?

Yes

- Replace the APPS Assembly. Removal. After installation is complete, use a scan tool and perform the Reset Accelerator Pedal Adaptives routine.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Test Complete.