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Home >> Chevrolet >> 2001 >> Corvette Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System With Traction Control System >> Diagnosis & Testing >> Diagnostic System Check

Diagnostic System Check

  1. Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, see SCAN TOOL DOES NOT POWER UP under appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
  2. Turn ignition on, engine off. Try to establish scan tool communication with Body Control Module (BCM), Electronic Brake Control Module (EBCM), Instrument Panel Cluster (IPC) and Powertrain Control Module (PCM). If communication with all modules is established, go to next step. If communication with any module is not established, see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE UNDER appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
  3. Select display DTC function for each module. Record all displayed DTCs, status of displayed DTCs and module that set DTC. If DTCs are displayed, go to next step. If no DTCs are displayed, see SYMPTOM DIAGNOSIS  .
  4. Retrieve codes and perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS  table.
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Description
B2597  Traction Control Switch Signal Grounded
BXXXX (1)
C1214  System Relay Contact Or Coil Circuit Open
C1217  BPMV Pump Motor Control Circuit Short
C1218  Pump Motor Voltage
C1221  Wheel Speed Sensor Input Signal Is Zero
C1222  Wheel Speed Sensor Input Signal Is Zero
C1223  Wheel Speed Sensor Input Signal Is Zero
C1224  Wheel Speed Sensor Input Signal Is Zero
C1225  Excessive Wheel Speed Variation
C1226  Excessive Wheel Speed Variation
C1227  Excessive Wheel Speed Variation
C1228  Excessive Wheel Speed Variation
C1232  Wheel Speed Sensor Circuit Open Or Shorted
C1233  Wheel Speed Sensor Circuit Open Or Shorted
C1234  Wheel Speed Sensor Circuit Open Or Shorted
C1235  Wheel Speed Sensor Circuit Open Or Shorted
C1236  Low System Supply Voltage
C1237  High System Supply Voltage
C1242  BPMV Pump Motor Short To Ground
C1243  BPMV Pump Motor Stalled
C1248  Dynamic Rear Proportioning Control System
C1254  Checksum Error
C1255  EBTCM Internal Malfunction (ABS/TCS Disabled)
C1256  EBTCM Internal Malfunction
C1261  LF Inlet Solenoid Valve Malfunction
C1262  LF Outlet Solenoid Valve Malfunction
C1263  RF Inlet Solenoid Valve Malfunction
C1264  RF Outlet Solenoid Valve Malfunction
C1265  LR Inlet Solenoid Valve Malfunction
C1266  LR Outlet Solenoid Valve Malfunction
C1267  RR Inlet Solenoid Valve Malfunction
C1268  RR Outlet Solenoid Valve Malfunction
C1271  LF TCS Master Cylinder Isolation Valve Malfunction
C1272  LF TCS Prime Valve Malfunction
C1273  RF TCS Master Cylinder Isolation Valve Malfunction
C1274  RF TCS Prime Valve Malfunction
C1276  Delivered Torque Signal Circuit Malfunction
C1277  Requested Torque Signal Circuit Malfunction
C1278  TCS Temporarily Inhibited By PCM
C1281  Steering Sensor Uncorrelated Malfunction
C1282  Yaw Rate Sensor Bias Circuit Malfunction
C1283  Excessive Time To Center Steering
C1284  Lateral Accelerometer Self Test Malfunction
C1285  Lateral Accelerometer Circuit Malfunction
C1286  Steering Sensor Bias Malfunction
C1287  Steering Sensor Rate Malfunction
C1288  Steering Sensor Circuit Malfunction
C1291  Open Brakelight Switch Contacts During Deceleration
C1292  Brake Fluid Pressure Low
C1293  Brake Fluid Pressure High
C1294  Brakelight Switch Circuit Always Active
C1295  Brakelight Switch Circuit Open
C1296  Brake Fluid Pressure Sensor Out Of Range
P1571  Requested Torque Signal Circuit Malfunction
P1644  Delivered Torque Signal Voltage Invalid
P1689  Delivered Torque Signal Voltage Invalid
PXXXX (2)
UXXXX (3)
(1) For "B" codes other than B2597, see DIAGNOSTIC TESTS in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(2) For any DTC beginning with the letter "P" except P1571, P1644 or P1689, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(3) For any DTC beginning with the letter "U", see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
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