The diverter assembly controls spray-arm water flow. Unplug the dishwasher and check the diverter motor and diverter positions switch for loose wires. If the wire harness is damaged, you need to replace it. The diverter assembly includes the diverter motor, position switch and diverter plate if the wires are okay. You'll need to replace the entire motor assembly on some models because diverter compoenents are not available as separate parts.
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