On Board Diagnosis Logic

This self-diagnosis has the one trip detection logic.

The MIL will not illuminate for this diagnosis.

NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to .

DTC DETECTING CONDITION AND POSSIBLE CAUSE

DTC No.	Trouble Diagnosis Name	DTC Detecting Condition	Possible Cause
P1564 1564	ASCD steering switch	An excessively high voltage signal from the ASCD steering switch is sent to ECM. ECM detects that input signal from the ASCD steering switch is out of the specified range. ECM detects that the ASCD steering switch is stuck ON.	Harness or connectors (The switch circuit is open or shorted.) ASCD steering switch ECM