P1566

Circuit Description

This diagnostic test will set if engine speed exceeds 5975 RPM while cruise control is engaged. This may occur on slippery pavement, extended wide open throttle acceleration, or for some mechanical problems (such as transaxle slippage). Under these conditions, DTC P1566 will set and should be considered normal. The driver should be advised why the cruise disengaged. Clear the DTC and road test vehicle to verify normal operation.

Conditions for Running the DTC

^ Driver not manually controlling throttle position.
^ Cruise control engaged.

Conditions for Setting the DTC

Engine speed 5975 RPM or greater for 0.5 second.

Action Taken When the DTC Sets

PCM disables cruise control.

^ The Malfunction Indicator Lamp (MIL) will not illuminate.
^ No message will be displayed.

Conditions for Clearing the DTC

^ A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test.
^ A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
^ Use a scan tool to clear DTCs.
^ Interrupting PCM battery voltage may or may not clear DTCs. This practice is not recommended.

Diagnostic Aids

Reviewing the Failure Rec. may help diagnose an intermittent failure by showing how long ago and under what conditions the DTC set.

Clear the DTC and operate the vehicle under the conditions in which the DTC set if a fault condition is suspected.