Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001VENTURE BASE, VAN CARGO EXTENDEDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM WITH TRACTION CONTROL SYSTEM - DELPHI DB 7DIAGNOSIS & TESTINGDIAGNOSTIC SYSTEM CHECK
2001 Chevrolet Venture Base, Van Cargo Extended
Diagnostic System Check
2001 Chevrolet Venture Base, Van Cargo ExtendedSECTION Diagnostic System Check
NOTE:
When using scan tool for diagnostics, ABS/TCS system is disabled by EBCM. ANTI-LOCK indicator will illuminate indicating only normal power assist braking is available. After diagnostics have been completed, disconnect scan tool from Data Link Connector (DLC) and turn ignition off for a least 10 seconds before road testing. This procedure is done to reset EBCM.
- Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, diagnose data link communications. See DATA LINK CONNECTORS article in WIRING DIAGRAMS.
- Turn ignition on, with engine off. Using scan tool, attempt to establish communication with BCM, EBCM, IPC and PCM. If scan tool communicates with all control modules, go to next step. If scan tool does not communicate with all control modules, go to TEST E: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYMPTOM TESTS.
- Select DTCs function on scan tool for BCM, EBCM, IPC or PCM. If scan tool displays any DTCs, go to next step. If scan tool does not display any DTCs, go to SYMPTOM DIAGNOSIS .
- If scan tool displays any DTCs which begins with a "U", go to TEST E: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE . If scan tool does not display any DTCs which begins with a "U", go to next step.
- If scan tool displays DTC B1000 or B1013, diagnose affected DTCs. See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If DTC B1000 or B1013 is not displayed, go to next step.
- If scan tool displays DTC P0560 or P0620, diagnose affected DTCs. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If DTC P0560 or P0620 is not displayed, diagnose affected DTC(s) displayed.
If multiple DTCs are displayed, begin diagnosis with DTC that is displayed first. See DIAGNOSTIC TROUBLE CODE DEFINITIONS table. Diagnose all codes in the order displayed by scan tool.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | (1) Definition | ||
|---|---|---|---|
| C1214 | Solenoid Valve Relay Contact Or Coil Circuit Open | ||
| C1216 | EBCM Commanded Pressure Release Too Long | ||
| C1217 | Pump Motor Shorted To Ground | ||
| C1218 | Pump Motor Circuit Shorted To 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 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1226 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1227 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1228 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1229 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1230 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1231 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1232 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1233 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1234 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1235 | Wheel Speed Sensor Input Signal Is Zero | ||
| C1236 | Low System Supply Voltage | ||
| C1237 | High System Supply Voltage | ||
| C1238 | Brake Rotor Temperatures Have Exceeded Thermal Cutoff Point | ||
| C1242 | Pump Motor Circuit Malfunction | ||
| C1243 | Pump Motor Circuit Malfunction | ||
| C1254 | Abnormal Shutdown Detected | ||
| C1255 | EBCM Internal Malfunction | ||
| C1256 | EBCM Internal Malfunction | ||
| C1261 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1262 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1263 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1264 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1265 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1266 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1267 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1268 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1269 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1270 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1271 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1272 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1273 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1274 | Inlet/Outlet Valve Solenoid Malfunction | ||
| C1276 | Delivered Torque Signal Malfunction | ||
| C1277 | Requested Torque Signal Malfunction | ||
| C1278 | TCS Temporarily Inhibited By PCM | ||
| C1291 | Brakelight Switch Remains Open During Deceleration | ||
| C1293 | DTC C1291 Was Set In Previous Ignition Cycle | ||
| C1294 | Brakelight Switch Circuit Always Active | ||
| C1295 | Brakelight Switch Circuit Open | ||
| P1571 | Requested Torque Signal Malfunction | ||
| P1644 | Delivered Torque Signal Malfunction | ||
| P1689 | Delivered Torque Signal Malfunction | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.