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Connector End View Reference Antilock Brake System Connector End Views Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Scan Tool Data List Circuit/System Testing 1. Cycle the ignition from OFF to ON. Observe the accumulator pressure data parameter on the scan tool. Fully apply and release the brake pedal once, the accumulator pressure should If the accumulator pressure data parameter does not hold steady above 16.7 MPa, 2. Wait 60 seconds without depressing the pedal. The pump motor should not turn on. If the ABS pump motor turns ON and OFF several times, replace the EBCM/brake 3. Cycle the ignition from OFF to ON. Apply and release the brake pedal continuously. The accumulator pressure should not be below 14.9 for 100 seconds consecutively. If the accumulator pressure stays below 14.9 MPa for 100 seconds, replace the 4. Test drive the vehicle and observe the accumulator pressure data parameter while driving. The accumulator should not fluctuate rapidly. If the accumulator pressure fluctuates rapidly replace the EBCM/BPMV assembly. Repair Procedures IMPORTANT: If present, diagnose DTC C0110 or C0201 before DTC C0131. An inoperative ABS motor or control can cause DTC C0131 to set. IMPORTANT: Always perform the Diagnostic Repair Verification after
2007 Hummer H3 2007 BRAKES Antilock Brake System - H3
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