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Engine Control Module

NOTE: Engine Control Module (ECM), can also be referred to as Powertrain Control Module (PCM). For ECM location. See Figure-Figure .
NOTE: For ECM removal and installation, see ENGINE CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL & INSTALLATION article.
  1. Using a Digital Volt-ohmmeter (DVOM), check for ignition power, battery power, and ground at terminals listed in table by application. Turn ignition on. Check for ignition voltage at ECM power terminals. Turn ignition off. Check for battery voltage between ECM power and ground terminals. For ECM connectors and terminals identification. See Fig 1-Fig 7 and for ECM ignition power, battery power and ground terminals, see ECM POWER & GROUND TERMINALS  table.
    ECM POWER & GROUND TERMINALS

    Model (1) Terminals No.
    Optima & Magentis (Canadian) 2.4L (A/T)
    Battery Power B26
    Ignition Power B1, B7, C7, C19, C28
    Ground B2, B8, C6, C18, C27
    Optima & Magentis (Canadian) 2.4L (M/T)
    Battery Power D10
    Ignition Power A12, A25, D12
    Ground A13, A26, D21
    Optima & Magentis (Canadian) 2.7L
    Battery Power V7
    Ignition Power V1, V8, V9
    Ground V4, V5, V6, Z5
    Rio
    Battery Power (B01) 7
    Ignition Power (B01) 1, 8, 9, (B04) 30 (3)
    Ground (B01) 4, 5, 6, (B04) 5
    Sedona
    Battery Power B26
    Ignition Power B1, B7, B9, C7, C19, C28
    Ground B2, B8, B17, C6, C18, C27
    Sorento
    Battery Power B20
    Ignition Power B7, B17, B19, C29
    Ground B6, B9, B18, 34, 55, 72
    Spectra
    Battery Power 12
    Ignition Power 13, 45, 63, 74 (2)
    Ground 3, 51, 61, 74 (2), 78, 80
    (1) For circuit identification, see WIRING DIAGRAMS article. For connector views, see Fig 1-Fig 7 .
    (2) ECM Terminal 74 is Ignition Power on A/T model and is Ground on M/T model.
    (3) On A/T model only.
  2. If battery voltage is not present, check appropriate fuses. Check ECM B+ fuses, FUEL INJ fuses and IGN COILS fuses in engine or passenger compartment fuse/relay boxes. Replace fuse(s) as necessary and check for cause of blown fuse. If fuses are okay, check EGI main relay. See RELAYS  under RELAYS & SOLENOIDS. If relay is okay, locate and repair power open between main relay and ECM connector or ground open between body and ECM connector.
Fig 1: Identifying Engine/Transaxle Control Module Connectors & Terminals (Optima & Magentis (Canadian) 2.4L A/T)
G00188313Courtesy of KIA MOTORS AMERICA, INC.
Fig 2: Identifying Engine Control Module Connectors & Terminals (Optima & Magentis (Canadian) 2.4L M/T)
G00188314Courtesy of KIA MOTORS AMERICA, INC.
Fig 3: Identifying Engine Control Module Connectors & Terminals (Optima & Magentis (Canadian) 2.7L)
G00188317Courtesy of KIA MOTORS AMERICA, INC.
Fig 4: Identifying Engine Control Module Connectors & Terminals (Rio 1.6L)
G00188320Courtesy of KIA MOTORS AMERICA, INC.
Fig 5: Identifying Engine Control Module Connector & Terminals (Sedona 3.5L)
G00082428Courtesy of KIA MOTORS AMERICA, INC.
Fig 6: Identifying Engine Control Module Connectors & Terminals (Sorento 3.5L)
G00188325Courtesy of KIA MOTORS AMERICA, INC.
Fig 7: Identifying Engine Control Module (ECM) Connector & Terminals (Spectra 1.8L)
G00188321Courtesy of KIA MOTORS AMERICA, INC.
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