DTC U0120 Cadillac
Electronic Throttle Control System - Forced Limited RPM
Electronic Throttle Control System - Forced Limited RPM
Description
The Electronic Throttle Control (ETC) Motor is controlled by the Powertrain Control Module (PCM). The DC motor located in the Throttle Body drives the throttle blade. In order to decrease idle speed, along with spark and fuel delivery changes the PCM commands the throttle closed reducing air flow into the engine and the idle speed decreases. In order to increase idle speed, the PCM commands the throttle plate open allowing more air to pass the throttle plate.
Cause and Solution
THROTTLE PLATE STUCK(K447) ETC MOTOR (+) CIRCUIT SHORTED TO GROUND(K448) ETC MOTOR (-) CIRCUIT SHORTED TO GROUNDETC MOTOR THROTTLE BODYPOWERTRAIN CONTROL MODULE (PCM)
Video Guide
Diagnostic Info
- DTC Code: U0120
- Brand: Cadillac