Engine Control Module (ECM)
NOTE:
ECM is also known as Powertrain Control Module (PCM). All references to ECM include PCM unless specified otherwise.
Power for ECM is supplied from 15-amp FI fuse through main relay. Main relay power is supplied from 15-amp IG fuse. ECM memory power is supplied from 15-amp TAIL fuse. FI, IG and TAIL fuses are located in fuse/relay block. The ECM distributes power or controls ground of various sensors, switches and solenoids for engine control.
ECM LOCATION
| Application | Location |
|---|---|
| Metro | Underneath Dash, Behind Glove Box |
NOTE:
Components are grouped into 2 categories. The first category is INPUT DEVICES, which are components that control or produce voltage signals monitored by the ECM. The second category is OUTPUT SIGNALS, which are components controlled by the ECM.