Diagnostic Tests: Notes
WARNING: This page is about a different car, the 1999 Buick Regal and 1999 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Always check complete system before diagnostic DTC's to ensure that system is working properly. See DIAGNOSTIC SYSTEM CHECK . See DIAGNOSTIC TROUBLE CODES for list of DTC's. For terminal and circuit identification, see WIRING DIAGRAMS . Testing of system requires use of Pinout Box (J-39700) and Adapter Cable (J-39700-99). After repairs, recheck system operation to verify problem has been repaired.
DIAGNOSTIC TROUBLE CODES
| DTC | Definition |
|---|---|
| C1211 | ABS Indicator Light Circuit Malfunction |
| C1214 | Solenoid Valve Relay Contact Or Coil Circuit Open |
| C1217 | Pump Motor Shorted To Ground |
| C1218 | Pump Motor Shorted To Voltage |
| C1221 | Left Front Wheel Speed Sensor Input Signal Equals Zero |
| C1222 | Right Front Wheel Speed Sensor Input Signal Equals Zero |
| C1223 | Left Rear Wheel Speed Sensor Input Signal Equals Zero |
| C1224 | Right Rear Wheel Speed Sensor Input Signal Equals Zero |
| C1225 | Left Front Excessive Wheel Speed Variation |
| C1226 | Right Front Excessive Wheel Speed Variation |
| C1227 | Left Rear Excessive Wheel Speed Variation |
| C1228 | Right Rear Excessive Wheel Speed Variation |
| C1232 | Left Front Wheel Speed Sensor Circuit Open Or Shorted |
| C1233 | Right Front Wheel Speed Sensor Circuit Open Or Shorted |
| C1234 | Left Rear Wheel Speed Sensor Circuit Open Or Shorted |
| C1235 | Right Rear Wheel Speed Sensor Circuit Open Or Shorted |
| C1236 | Low System Voltage |
| C1237 | High System Voltage |
| C1238 | Brake Thermal Model Limit Exceeded |
| C1242 | BPMV Pump Motor Circuit Open |
| C1243 | BPMV Pump Motor Stalled |
| C1247 | BPMV Low Brake Fluid Detected |
| C1254 | Abnormal Shutdown Detected |
| C1255 | EBCM/EBTCM Internal Malfunction |
| C1256 | EBCM/EBTCM Internal Malfunction |
| C1261 | Left Front Hold Valve Solenoid Malfunction |
| C1262 | Left Front Release Valve Solenoid Malfunction |
| C1263 | Right Front Hold Valve Solenoid Malfunction |
| C1264 | Right Front Release Valve Solenoid Malfunction |
| C1265 | Left Rear Hold Valve Solenoid Malfunction |
| C1266 | Left Rear Release Valve Solenoid Malfunction |
| C1267 | Right Rear Hold Valve Solenoid Malfunction |
| C1268 | Right Rear Release Valve Solenoid Malfunction |
| C1272 | Left Front TCS Solenoid Valve Malfunction |
| C1274 | Right Front TCS Solenoid Valve Malfunction |
| C1275 | PCM Requested ETS To Be Disabled |
| C1276 | Delivered Torque Signal Circuit Malfunction |
| C1277 | Requested Torque Signal Circuit Malfunction |
| C1278 | TCS Temporarily Inhibited By PCM |
| C1291 | Open Brakelight Switch During Deceleration |
| C1293 | DTC C1291 Set In Current Or Previous Ignition Cycle |
| C1294 | Brakelight Switch Circuit Always Active |
| C1295 | Brakelight Switch Circuit Open |
| C1298 | PCM Indicated Class 2 Serial Data Link Malfunction |