LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2007 >> Matrix Base, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1ZZ-FE) >> SFI System >> DTC P0601 Internal Control Module Memory Check Sum Error >> Typical Malfunction Thresholds
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Typical Malfunction Thresholds

ECM Check Sum error: 

TYPICAL MALFUNCTION THRESHOLDS

Check sum Error

Electronic throttle control system power supply function of ECM malfunctions (P0657): 

DIAGNOSTIC PROCEDURE

ETCS (Electronic Throttle Control System) power supply when ignition switch turned to ON. 7 V or more
scientia non olet · About LEMON Manuals