ECM CONNECTOR TERMINAL IDENTIFICATION
For ECM connector terminal identification (Scheme 1)- (Scheme 7).
| CAUTION | When battery is disconnected, vehicle computer and memory system may lose memory data. Driveability problems may exist until computer system have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Scheme 1
Scheme 2
Scheme 3
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Pin voltage charts are charts provided from manufacturer. For Optima & Magentis (Canadian), Sedona and Spectra, pin voltage charts are not available. For additional terminal and wire color identification at Engine Control Module (ECM), see appropriate wiring diagram under ENGINE PERFORMANCE in WIRING DIAGRAMS.
Note. Unless stated otherwise in testing procedures, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Voltage readings may vary slightly due to battery condition or charging rate.