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Home >> Toyota >> 2003 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P1127: Electronic Throttle Control System Actuator Power Source Circuit >> Possible Causes

Possible Causes

DTC is set when battery voltage does not exist at +BM terminal of ECM. Possible causes are:

Defective fuse.
Power source for ETCS circuit is open or shorted.
Defective ECM.

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