P1835

DTC P1835 Kickdown Switch Always On
Circuit Description
- When the driver presses the accelerator pedal down fully, the kickdown switch closes, sending a ground signal to the Powertrain Control Module (PCM).
- This information is used to perform shifts at high engine speed.
- When the kickdown switch is closed, the Throttle Position Sensor (TPS) is already is at 100%.
- This DTC detects a closed kickdown switch when TP angle is less than 70%.
- This is a type "D" DTC.

Conditions For Setting The DTC
- No TPS DTCs P0122 or P0123.
- TP angle is less than 70%.
- Kickdown switch is"on".
- All conditions met for 1 second.

Action Taken When The DTC Sets .
- Kickdown mode control is off.
- The PCM will not illuminate the Malfunction Indicator Lamp (MIL) and CHECK TRANS Lamp.

Conditions For Clearing The DTC
- The DTC can be cleared from the PCM history by using a scan tool.
- The DTC will be cleared from history when the vehicle has achieved 40 warmup cycles without a failure reported.
- The PCM will cancel the DTC default actions when the fault no longer exists and the ignition is cycled "off" long enough to power down the PCM.

Diagnostic Aids
- Check the wiring harness for a short to ground between the PCM and kickdown switch.
- Check the kickdown switch for failure.
- Check kickdown adjustment.

Test Description
The numbers below refer to the step numbers on the diagnostic chart:
2. This test checks for short to ground or kickdown switch failure.
4. This test checks for regulation kickdown switch.