Engine Control Module Power Source Circuit: Corolla

For engine control module power source circuit inspection, see Fig 1-Fig 7 . Before replacing ECM, check ECM connectors and ground circuits. See ENGINE CONTROL MODULE POWER & GROUND CIRCUITS .

Fig 1: Engine Control Module Power Source Circuit Description & Diagram (Corolla)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Engine Control Module Power Source Circuit Inspection - Steps 1-3 (Corolla)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Engine Control Module Power Source Circuit Inspection - Steps 4-5 (Corolla)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Engine Control Module Power Source Circuit Inspection - Steps 6-7 (Corolla)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 5: Engine Control Module Power Source Circuit Inspection - Steps 8-9 (Corolla)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 6: Identifying Engine Control Module Electrical Connector Terminals (Corolla With 3-Speed A/T Or M/T)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 7: Identifying Engine Control Module Electrical Connector Terminals (Corolla With 4-Speed A/T)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002