Conditions for Setting the DTC: Notes

DTC P1870 sets if the following conditions occur for three TCC cycles.

• The TCC is commanded ON for 5 seconds.
• The TCC is at 40 percent duty cycle for 5 seconds.
• The TCC slip speed is 130-800 RPM for 7 seconds.
IMPORTANT: The following actions may occur before the DTC sets.
• If the TCC is commanded ON for 5 seconds, the TCC is at 40 percent duty cycle for 5 seconds, the TP angle is 20-99 percent and the transmission slip counter has incremented to either 1 or 2, out of 3 to increment the fail counter for the current ignition cycle, then the following slip conditions and actions may increment the fail counter for the current ignition cycle:

  These conditions must occur sequentially.