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• CAN bus circuits • Leak detection pump (if equipped) • Malfunction indicator lamp (Check engine lamp). Driven through CAN bus circuits. • Overdrive indicator lamp (if equipped) • Radiator cooling fan (if equipped) • Speed control vacuum solenoid • Speed control vent solenoid • Starter relay • Tachometer (if equipped). Driven through CAN bus circuits. • Transmission convertor clutch circuit • Transmission 3-4 shift solenoid • Transmission relay • Transmission temperature lamp (if equipped) • Transmission variable force solenoid 5 VOLT SUPPLIES Primary 5–volt supply: • supplies the required 5 volt power source to the Crankshaft Position (CKP) sensor. • supplies the required 5 volt power source to the Camshaft Position (CMP) sensor. • supplies a reference voltage for the Manifold Absolute Pressure (MAP) sensor. • supplies a reference voltage for the Throttle Position Sensor (TPS) sensor. Secondary 5–volt supply: • supplies the required 5 volt power source to the oil pressure sensor. • supplies the required 5 volt power source for the Vehicle Speed Sensor (VSS) (if equipped). • supplies the 5 volt power source to the transmission pressure sensor (if equipped with an RE automatic trans- IGNITION CIRCUIT SENSE The ignition circuit sense input tells the PCM the ignition switch has energized the ignition circuit. Battery voltage is also supplied to the PCM through the ignition switch when the ignition is in the RUN or START 9 ignition sense 9 circuit and is used to 9 wake up 9 the PCM. Voltage on the ignition input can be as low as 6 volts and the PCM will still function. Voltage is supplied to this circuit to power the PCM’s REMOVAL CAUTION: Certain ABS systems rely on having the Powertrain Control Module (PCM) broadcast the Vehicle CAUTION: Use the DRB scan tool to reprogram the new PCM with the vehicles original identification num- HB ELECTRONIC CONTROL MODULES - SERVICE INFORMATION 8E - 209 |