Wastegate actuator SCB on high side
▶ How to fix
Check the connectors and wiring to the wastegate actuator. Check the wastegate actuator Measure resistance of wastegate actuator, the resistance shall be around 30 Ohm at 20º C.
What you'll see
No driver-visible symptom recorded.
System reaction
The wastegate actuator will be fully opened resulting in bad turbo performance.
Diagnostic depth
Detection
Short circuit high to battery voltage (U30) in the Wastegate actuator circuit.
Possible cause
Short circuit high to battery voltage in the Wastegate actuator circuit.