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Home >> Infiniti >> 1998 >> Q45 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Powertrain Control Module (Pcm)
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Powertrain Control Module (Pcm)

The PCM consists of a microcomputer, diagnostic mode selector, connectors and wiring for voltage signal input/output, and power supply. The unit is not serviceable and should not be opened. The PCM contains memory and logic circuits, enabling it to interpret sensor inputs and control various engine systems. To locate PCM, see PCM LOCATION  table.

PCM LOCATION

Application Location
I30 Under Dash, Behind Center Console
Q45 Located Behind Passenger's Side Kick Panel
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 PCM. The second category is OUTPUT SIGNALS , which are components controlled by the PCM.