Kick Down Switch Circuit Intermittent/Erratic

Where it lives

For P278E, the circuit described runs through the switch. The description of P278E reports a fault at the switch.

Check these first

• An intermittent open in the kick down switch circuit
• A loose or corroded kick down switch connector
• A failing kick down switch
• Chafed kick down switch wiring that shorts under vibration

What to do next

1. Read the kick down switch status on a scan tool
2. Wiggle test the kick down switch harness while watching data
3. Test the kick down switch circuit for intermittent open and short faults
4. Check the kick down switch connector pins
5. Replace the kick down switch if the fault follows the harness
6. Clear the code and retest

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