GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Optra 🢒 Brakes 🢒 Antilock Brake System 🢒 Antilock Brake System Schematics
Figure 1:

Powers, Grounds, Wheel Speed Sensors
Object Number: 1372171 Size: FS
Master Electrical Component List
Warning Lamps, Serial Data, Rough Road
I/P Fuse Block - ABS, IMMOBILIZER, WPR, AND TRN SIG LAMPS Fuses
I/P Fuse Block - ABS, IMMOBILIZER, WPR, AND TRN SIG LAMPS Fuses
I/P Fuse Block - ABS, IMMOBILIZER, WPR, AND TRN SIG LAMPS Fuses
Figure 2:

Warning Lamps, Serial Data, Rough Road
Object Number: 1455075 Size: FS
Master Electrical Component List
Powers, Grounds, Wheel Speed Sensors
I/P Fuse Block - ABS, IMMOBILIZER, WPR, AND TRN SIG LAMPS Fuses
Hydraulic Brakes
Hydraulic Brakes
Module Power, Ground, Serial Data, Malfunction Indicator Lamp (MIL)
Module Power, Ground, Serial Data, Malfunction Indicator Lamp (MIL)
Module Power, Ground, Serial Data, Malfunction Indicator Lamp (MIL)
Module Power, Ground, Serial Data, Malfunction Indicator Lamp (MIL)