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Home >> Toyota >> 2003 >> Prius >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics >> Diagnostic Tests >> DTC P1633: Engine Control Module Malfunction (Electronic Throttle Control System Circuit) >> Diagnosis & Repair

Diagnosis & Repair

NOTE: Using Toyota hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.

If DTC P1633 exists, replace ECM. ECM is located behind glove box. See Figure.

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