EL3 Component Check
^ Turn ignition switch to OFF position.
^ Depress STAR test button so that it remains down in the TEST position.
NOTE: This type of Drive Cycle Diagnostic test will cause code 55 to be displayed, since a vehicle speed of 15 mph or grater was not detected.
^ Is STAR tester displaying code 68 again?
YES -- GO to EL4.
NO -- REPLACE rear height sensor. REPEAT Service BAY Diagnostics.