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• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
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.
Ignition ON.
Stability control is active for more than 15 s.
• | 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. |
The condition for setting the DTC is no longer present.
DTC can set because of extended operation of ABS, traction control or stability control.
Antilock Brake System Schematics
Control Module References for scan tool information
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.
If any listed DTC is present
Refer to Diagnostic Trouble Code (DTC) List - Vehicle to diagnose that DTC prior to this diagnostic.
If DTC C0280 00 is set
Refer to Circuit/System Testing.
If DTC C0280 00 does not set
If the DTC C0280 00 sets
Replace the brake pressure modulator valve assembly.
If the DTC C0280 00 does not set
Perform the Diagnostic Repair Verification after completing the repair.
• | Control Module References for electronic brake control module replacement, programming and setup |
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