DTC C0280
Diagnostic Instructions
DTC Descriptor
DTC C0280 00: Stability System Active Too Long
Circuit/System Description
The solenoid valves are integral parts of the brake pressure modulator valve assembly. The brake pressure modulator valve assembly contains an isolation solenoid valve and a dump solenoid valve for each wheel and a traction control/stability control supply solenoid valve and isolation solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, traction control or stability control operation is required the Electronic Brake Control Module turns the required solenoid valves ON.
Conditions for Running the DTC
Ignition ON.
Conditions for Setting the DTC
Stability control is active for more than 15 s.
Action Taken When the DTC Sets
• | The Electronic Brake Control Module disables the stability control for the duration of the ignition cycle. |
• | The traction control/stability control-active indicator turns ON. |
Conditions for Clearing the DTC
The condition for setting the DTC is no longer present.
Diagnostic Aids
DTC can set because of extended operation of ABS, traction control or stability control.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Note: Since most occurrences of this DTC are caused by excessive ABS or traction usage, review with the customer the conditions under which the DTC set.
- Ignition ON.
- Verify that DTC C0186, C0196, C019B, or C0710 is not set.
⇒ | If any listed DTC is present |
| Refer to Circuit/System Testing. |
⇓ | If DTC C0280 00 does not set |
- All OK.
Circuit/System Testing
- Ignition ON.
- If DTC C0280 00 is set, replace the K17 Electronic Brake Control Module.
- Verify that the DTC does not set.
⇒ | If the DTC C0280 00 sets |
| Replace the brake pressure modulator valve assembly. |
⇓ | If the DTC C0280 00 does not set |
- All OK.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the repair.
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© Copyright Chevrolet. All rights reserved |