1. Check that the knock sensor has no deformation, cracks or other damages. 2. Measure the resistance between knock sensor terminals.
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Removal
InstallationDtc b1437 air mix door actuator circuit short-circuit (passenger)
DTC DETECTING CONDITION:Air mix door actuator potentiometer circuit is shorted.TROUBLE SYMPTOM:Temperature of the passenger’s side cannot be adjusted for model with left/right independent air conditioner.WIRING DIAGRAM:Air conditioning system Air Conditioning System > WIRING DIAGRAMSTEPCHECKY ...