Test 18: Cruise Main Light Problem

Disconnect connector "A". Turn ignition on. Ground connector "A" terminal No. 20. If light bulb illuminates, repair open circuit between connector "A" terminal No. 20 and cruise ECU. If wiring is okay, replace cruise ECU. If bulb does not illuminate, check bulb. Replace as needed and retest. If bulb is okay, replace circuit plate and retest.