GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Pontiac
🢒
1998
🢒
Trans Sport
🢒
Brakes
🢒 Antilock Brake System
Brakes
All Component Locator
ABS Components
Antilock Brake System Component Views
All Description and Operation
Abbreviations and Definitions
ABS/TCS System Description
ABS/TCS System Operation
Basic Knowledge Required
General System Description
Service Precautions
All Special Tools and Equipment
Special Tools
All Visual Identification
Antilock Brake System Connector End Views
Diagnostic Procedures
ABS Indicator Always On
ABS Indicator Inoperative
Scan Tool Displays Undefined DTC
Traction Control Indicator Always On
Traction Control Indicator Inoperative
Diagnostic Trouble Codes
DTC C1211 ABS Warning Lamp Circuit Malfunction
DTC C1213 ABS ACTIVE Indicator Circuit Malfunction
DTC C1214 Brake Control Relay Contact Circuit Open
DTC C1215 Brake Control Relay Contact Circuit Active
DTC C1216 Brake Control Relay Coil Circuit Open
DTC C1217 Brake Control Relay Coil Circuit Short to Ground
DTC C1218 Brake Control Relay Coil Circuit Short to Voltage
DTC C1221 LF Wheel Speed Sensor Input Signal is 0
DTC C1222 RF Wheel Speed Sensor Input Signal is 0
DTC C1223 LR Wheel Speed Sensor Input Signal is 0
DTC C1224 RR Wheel Speed Sensor Input Signal is 0
DTC C1225 LF Excessive Wheel Speed Variation
DTC C1226 RF Excessive Wheel Speed Variation
DTC C1227 LR Excessive Wheel Speed Variation
DTC C1228 RR Excessive Wheel Speed Variation
DTC C1232 LF Wheel Speed Circuit Open or Shorted
DTC C1233 RF Wheel Speed Circuit Open or Shorted
DTC C1234 LR Wheel Speed Circuit Open or Shorted
DTC C1235 RR Wheel Speed Circuit Open or Shorted
DTC C1236 Low System Supply Voltage
DTC C1237 High System Supply Voltage
DTC C1238 Left Front ESB Does Not Hold Motor
DTC C1241 Right Front ESB Does Not Hold Motor
DTC C1242 Rear ESB Does Not Hold Motor
DTC C1244 Left Front ABS Channel Does Not Move
DTC C1245 Right Front ABS Channel Does Not Move
DTC C1246 Rear ABS Channel Does Not Move
DTC C1247 Left Front ABS Motor Free Spins
DTC C1248 Right Front ABS Motor Free Spins
DTC C1251 Rear ABS Motor Free Spins
DTC C1252 LF ABS Channel in Release Too Long
DTC C1253 RF ABS Channel in Release Too Long
DTC C1254 Rear ABS Channel in Release Too Long
DTC C1255 EBCM/EBTCM Internal Malfunction
DTC C1256 Left Front ABS Motor Circuit Open
DTC C1257 LF ABS Motor Circuit Shorted to Ground
DTC C1258 LF ABS Motor Circuit Shorted to Voltage
DTC C1261 Right Front ABS Motor Circuit Open
DTC C1262 RF ABS Motor Circuit Shorted to Ground
DTC C1263 RF ABS Motor Circuit Shorted to Voltage
DTC C1264 Rear ABS Motor Circuit Open
DTC C1265 Rear ABS Motor Circuit Shorted to Ground
DTC C1266 Rear ABS Motor Circuit Shorted to Voltage
DTC C1275 Serial Data Malfunction
DTC C1276 LF Solenoid Circuit Open or Short to Ground
DTC C1277 LF Solenoid Circuit Shorted to Voltage
DTC C1278 RF Solenoid Circuit Open or Shorted to Ground
DTC C1281 RF Solenoid Circuit Shorted to Voltage
DTC C1282 Calibration Malfunction
DTC C1286 EBCM/EBTCM Turned On Brake Warning Indicator
DTC C1287 Brake Warning Indicator Circuit Open or Shorted to Voltage
DTC C1291 Open Brake Lamp Switch Contacts During Deceleration
DTC C1292 Open Brake Lamp Switch When ABS Was Required
DTC C1293 DTC C1291/C1292 Set in Current or Previous Ignition Cycle
DTC C1294 Brake Lamp Switch Circuit Always Active
DTC C1295 Brake Lamp Switch Circuit Open
DTC C1311 ABS/TCS Warning or Active Indicator Circuit Malfunction
DTC C1312 TCS Enable Lamp Circuit Malfunction
DTC C1323 PCM to EBTCM Delivered Torque Circuit Malfunction
DTC C1324 EBTCM to PCM Requested Torque Circuit Malfunction
DTC C1344 Left TCS Channel Does Not Move
DTC C1345 Right TCS Channel Does Not Move
DTC C1347 Left TCS Motor Free Spins
DTC C1348 Right TCS Motor Free Spins
DTC C1355 EBTCM Malfunction
DTC C1356 Left TCS Motor Circuit Open
DTC C1357 Left TCS Motor Circuit Shorted to Ground
DTC C1358 Left TCS Motor Circuit Shorted to Voltage
DTC C1361 Right TCS Motor Circuit Open
DTC C1362 Right TCS Motor Circuit Shorted to Ground
DTC C1363 Right TCS Motor Circuit Shorted to Voltage
Disassembly, Overhaul, Repair, and Assembly
ABS Motor Pack Replacement
Brake Modulator Gear Replacement
Brake Modulator Replacement
Modulator Gear Cover Replacement
Traction Control System Modulator Gear Replacement
Traction Control System Modulator Replacement
Traction Control System Motor Pack Replacement
Electrical/Electronic Schematic Diagrams
ABS Schematic References
Antilock Brake System Schematic Icons
Antilock Brake System Schematics
General Diagnostic Information
Clearing DTCs
Diagnostic System Check
Diagnostic Trouble Code (DTC) List
Displaying Diagnostic Trouble Codes (DTC)
Intermittents and Poor Connections
Scan Tool Diagnostics
Self-Diagnostics
Mechanical Specifications
Fastener Tightening Specifications
Other Specifications
GM SPO Group Numbers
Removal, Installation, and Replacement
Brake Modulator/Master Cylinder Assembly Replacement
Brake Solenoid Valve Replacement
Electronic Brake and Traction Control Module Replacement
Electronic Brake Control Relay Replacement
Lamp Driver Module Replacement
Traction Control System Modulator/Motor Pack Replacement
Wheel Speed Sensor Jumper Harness Replacement
Wheel Speed Sensor Replacement