Engine Control Module Power Source Circuit: Highlander

WARNING: This page is about a different variant/trim than selected.

For engine control module power source circuit inspection, see Fig 1-Fig 6 . 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 (Highlander)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Engine Control Module Power Source Circuit Inspection - Steps 4-6 (Highlander)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 4: Engine Control Module Power Source Circuit Inspection - Steps 7-9 (Highlander)

Fig 5: Engine Control Module Power Source Circuit Inspection - Steps 10-11 (Highlander)

Fig 6: Identifying Engine Control Module Electrical Connector Terminals (Highlander)