Engine Controls Schematics. Chevrolet TrailBlazer

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2005 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Controls - 5.3L 🢒 Engine Controls Schematics

Figure 1:	Module Power, Ground, Serial Data, and MIL Master Electrical Component List Engine Control Module Description Control Module References Fuse Block - Underhood Powertrain Relay - 1 of 2 OBD II Symbol Description Notice B+ Bus - Underhood Fuse Block Ignition Switch - ACCY/RUN and RUN/START Bus Bars, IGN B Fuse BACK UP, BTSI, IGNE, TBC IGN1, and TRLR B/U Fuses BACK UP, BTSI, IGNE, TBC IGN1, and TRLR B/U Fuses Ignition Switch - ACCY/RUN/START, RUN, and START Bus Bars, IGN A and CRANK Fuses FRT WPR, IGN 0, RAIN, TBC ACC, TBC IG, and TCM Fuses Power, Ground, Serial Data, and MIL FRT WPR, IGN 0, RAIN, TBC ACC, TBC IG, and TCM Fuses G108 SP205 Power, Ground, Data Link Connector
Figure 2:	Fuse Block - Underhood Powertrain Relay - 1 of 2 Master Electrical Component List Engine Control Module Description Control Module References Fuse Block - Underhood Powertrain Relay - 2 of 2 Module Power, Ground, Serial Data, and MIL OBD II Symbol Description Notice ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L B+ Bus - Underhood Fuse Block
Figure 3:	Fuse Block - Underhood Powertrain Relay - 2 of 2 Master Electrical Component List Engine Control Module Description Control Module References Engine Data Sensors - 5-Volt and Low Reference Fuse Block - Underhood Powertrain Relay - 1 of 2 OBD II Symbol Description Notice ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L B+ Bus - Underhood Fuse Block
Figure 4:	Engine Data Sensors - 5-Volt and Low Reference Master Electrical Component List Engine Control Module Description Control Module References Engine Data Sensors - MAF, Pressure, Temperature, and VSS Fuse Block - Underhood Powertrain Relay - 2 of 2 OBD II Symbol Description Notice
Figure 5:	Engine Data Sensors - MAF, Pressure, Temperature, and VSS Master Electrical Component List Engine Control Module Description Control Module References Engine Data Sensors - Oxygen Sensors Engine Data Sensors - 5-Volt and Low Reference OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 2 of 2 ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L Gages G108
Figure 6:	Engine Data Sensors - Oxygen Sensors Master Electrical Component List Engine Control Module Description Control Module References Engine Data Sensors - Throttle Actuator Controls Engine Data Sensors - MAF, Pressure, Temperature, and VSS OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 2 of 2 Fuse Block - Underhood Powertrain Relay - 2 of 2 G108
Figure 7:	Engine Data Sensors - Throttle Actuator Controls Master Electrical Component List Engine Control Module Description Control Module References Ignition Controls - Ignition System Coils 1, 3, 5, 7 Engine Data Sensors - Oxygen Sensors OBD II Symbol Description Notice Cruise Control 5.3L
Figure 8:	Ignition Controls - Ignition System Coils 1, 3, 5, 7 Master Electrical Component List Engine Control Module Description Control Module References Ignition Controls - Ignition System Coils 2, 4, 6, 8 Engine Data Sensors - Throttle Actuator Controls OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 1 of 2 ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L G109
Figure 9:	Ignition Controls - Ignition System Coils 2, 4, 6, 8 Master Electrical Component List Engine Control Module Description Control Module References Ignition Controls - Sensors and Displacement On Demand Controls Ignition Controls - Ignition System Coils 1, 3, 5, 7 OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 1 of 2 ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L G109
Figure 10:	Ignition Controls - Sensors and Displacement on Demand Master Electrical Component List Engine Control Module Description Control Module References Fuel Controls - Fuel Pump Controls and Fuel Injectors Ignition Controls - Ignition System Coils 2, 4, 6, 8 OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 2 of 2 ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L Engine Controls Schematic Icons
Figure 11:	Fuel Controls - Fuel Pump Controls and Fuel Injectors Master Electrical Component List Engine Control Module Description Control Module References Fuel Controls - EVAP Controls Ignition Controls - Sensors and Displacement On Demand Controls OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 1 of 2 Fuse Block - Underhood Powertrain Relay - 1 of 2 AIR, COILS, EAP, ECM, HDM, HI HDLP-LT, HI HDLP-RT, LOW HDLP-RT, LOW HDLP-LT, PCMB, and TCB1 Fuses G104, G105, and G107 ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L G201 - 2 of 2 and G305
Figure 12:	Fuel Controls - EVAP Controls Master Electrical Component List Evaporative Emission Control System Description Control Module References Controlled/Monitored Subsystem References Fuel Controls - Fuel Pump Controls and Fuel Injectors OBD II Symbol Description Notice Fuse Block - Underhood Powertrain Relay - 2 of 2 B+ Bus - Underhood Fuse Block AUX PWR1, AUX PWR2, RRHVAC, SUNROOF, TBC2, TBC3, TBC4, TBC5, and TCM/CANISTER Fuses Fuel Gage ENG 1, INJA, INJB, O2A, O2B, and TAC Fuses - 5.3L
Figure 13:	Controlled/Monitored Subsystem References Master Electrical Component List Engine Control Module Description Control Module References Fuel Controls - EVAP Controls OBD II Symbol Description Notice Gages Power, Ground, Serial Data, and Transfer Case Encoder Motor Fuel Gage Gages Compressor Controls Compressor Controls Cooling Fan Controls Charging System Starting System EBCM Power, Ground, Serial Data, Indicator, and Signal Circuits Pressure Controls, Temperature, and VSS Cooling Fan Controls