Install the parts in the reverse order of removal.
1.
LKAS Switch - Test
1.
Measure the resistance between ACC combination switch connector terminals No. 5 and No. 12 according to the table.
If there is no resistance in one or more positions, replace the ACC combination switch.
Position
Resistance
OFF
About 2.2 k?
LKAS (PRESSED)
About 60 ?
2.
Check the LED for illumination when connecting battery power and ground to the switch terminals according to the table.
NOTE: Note this important operating characteristic; diode bias causes a diode to fully conduct electricity in one direction (forward), while not at all in the opposite direction (reverse).
If the results are not as specified, replace the ACC combination switch.