Engine Controls Schematics. Chevrolet Impala 2008

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2008 🢒 Impala 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Engine Controls Schematics

Figure 1:	ECM Power, Ground, MIL, and Serial Data Master Electrical Component List Engine Control Module Description Control Module References 5-Volt and Low Reference Bussing Fuse Block - Underhood Bussing ECM IGN, TRANS, PWR DROP/CRNK, AIRBAG/DISPLAY, STRTR, FUEL/PUMP, and HORN Fuses ONSTAR, INT LTS/PNL DIM, LT T/SIG, RT T/SIG, CHMSL/BCK-UP, INT LIGHTS, RVC SEN, and ECM/TCM Fuses EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays High Speed GMLAN Serial Data High Speed GMLAN Serial Data G101, G102, and G111 G101, G102, and G111
Figure 2:	5-Volt and Low Reference Bussing Master Electrical Component List Engine Control Module Description Control Module References MAP, ECT, and MAF/IAT Sensors ECM Power, Ground, MIL, and Serial Data
Figure 3:	MAP, ECT, and MAF/IAT Sensors Master Electrical Component List Engine Control Module Description Control Module References Heated Oxygen Sensors 5-Volt and Low Reference Bussing ECM Power, Ground, MIL, and Serial Data EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays Turn Signal, Hazard, and Stop Lamps Outputs VSS, AT ISS Sensors, Pressure Control Solenoid Valve, and TCC Release Switch G101, G102, and G111
Figure 4:	Heated Oxygen Sensors Master Electrical Component List Engine Control Module Description Control Module References Electronic Throttle Controls MAP, ECT, and MAF/IAT Sensors ECM Power, Ground, MIL, and Serial Data EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays
Figure 5:	Electronic Throttle Controls Master Electrical Component List Throttle Actuator Control (TAC) System Description Control Module References Ignition Controls Bank 1 (Odd) Ignition Coils Heated Oxygen Sensors
Figure 6:	Ignition Controls Bank 1 (Odd) Ignition Coils Master Electrical Component List Electronic Ignition (EI) System Description Control Module References Ignition Controls Bank 2 (Even) Ignition Coils Electronic Throttle Controls ECM Power, Ground, MIL, and Serial Data ETC/ECM, INJ 1, INJ 2 Fuses (LS4) G113, and G115
Figure 7:	Ignition Controls Bank 2 (Even) Ignition Coils Master Electrical Component List Electronic Ignition (EI) System Description Control Module References Ignition Controls, Knock, CMP, CKP, Brake Booster Vacuum Sensor, and Valve Lifter Oil Manifold (VLOM) Assembly Ignition Controls Bank 1 (Odd) Ignition Coils ECM Power, Ground, MIL, and Serial Data ETC/ECM, INJ 1, INJ 2 Fuses (LS4) G113, and G115
Figure 8:	Ignition Controls, Knock, CMP, CKP, Brake Booster Vacuum Sensor, and Valve Lifter Oil Manifold (VLOM) Assembly Master Electrical Component List Cylinder Deactivation (Active Fuel Management) System Description Control Module References Fuel Pump Controls Ignition Controls Bank 2 (Even) Ignition Coils ECM Power, Ground, MIL, and Serial Data EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays
Figure 9:	Valve Lifter Oil Manifold (VLOM) Assembly and Brake Booster Vacuum Sensor Master Electrical Component List Cylinder Deactivation (Active Fuel Management) System Description Control Module References Controlled/Monitored Subsystem References Ignition Controls, Knock, CMP, CKP, Brake Booster Vacuum Sensor, and Valve Lifter Oil Manifold (VLOM) Assembly EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays
Figure 10:	Fuel Injectors Master Electrical Component List Fuel System Description Control Module References EVAP Solenoids, and FTP Sensor Fuel Pump Controls ECM Power, Ground, MIL, and Serial Data ETC/ECM, INJ 1, INJ 2 Fuses (LS4) ETC/ECM, INJ 1, INJ 2 Fuses (LS4)
Figure 11:	EVAP Solenoids, and FTP Sensor Master Electrical Component List Evaporative Emission Control System Description Control Module References Controlled/Monitored Subsystem References Fuel Injectors BATT 1, CNSTR, XM, TRUNK, AMP, AUX Fuses, and TRUNK Relay ECM Power, Ground, MIL, and Serial Data EMISSIONS 1, EMISSIONS 2, A/C CMPRSR Fuses, and A/C CMPRSR, FAN 1, FAN 2, and FAN 3 Relays Power, Ground, and Gages
Figure 12:	Controlled/Monitored Subsystem References Master Electrical Component List Engine Control Module Description Control Module References EVAP Solenoids, and FTP Sensor A/C Compressor Controls Engine Cooling Schematics Starter Engine Mechanical Schematics Indicators PRNDL, and IMS Switch