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Home >> GMC >> 1995 >> Jimmy 4D Utility, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Anti-Lock Brake System - Rear (2.2L)) >> Trouble Codes >> DTC 3 - Open Dump Solenoid Or EBCM Fault >> Test Description

Test Description

WARNING: This page is about a different car, the 1995 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Perform SYSTEM DIAGNOSTIC CHECK  before performing trouble shooting procedure.
  1. Turn ignition off. Disconnect EBCM 4-pin connector. Measure resistance between White wire and Black wire terminals of EBCM 4-pin connector. If resistance is 1-3 ohms, go to step 5). If resistance is not 1-3 ohms, go to next step.
  2. Check for poor connection at EBCM 4-pin connector. If connection is okay, go to next step. If connection is not okay, go to step 4).
  3. Replace Anti-Lock Pressure Valve (APV). See removal procedures for ANTI-LOCK PRESSURE VALVE . After replacement of APV, perform SYSTEM DIAGNOSTIC CHECK .
  4. Repair EBCM 4-pin connector as necessary. Measure resistance between White wire and Black wire terminals of EBCM 4-pin connector. If resistance is 1-3 ohms, perform SYSTEM DIAGNOSTIC CHECK . If resistance is not 1-3 ohms, go to step 3).
  5. Connect EBCM 4-pin connector. Clear DTCs. See procedures under CLEARING CODES . Turn ignition on. If BRAKE light comes on and stays on, go to next step. If BRAKE light does not come on, go to step 2).
  6. Turn ignition off. Check for stored trouble codes. See RETRIEVING CODES . If DTC 7 is present, go to DTC 7. If DTC 7 is not present and DTC 3 is still present, go to next step. If no DTCs are present, go to step 8).
  7. Turn ignition off. Replace EBCM. See removal procedures for ELECTRONIC BRAKE CONTROL MODULE (EBCM) . After EBCM replacement, perform SYSTEM DIAGNOSTIC CHECK .
  8. The cause for DTC 3 was a poor connection at EBCM 4-pin connector. Ensure EBCM 4-pin connector is fully seated. Perform procedures under SYSTEM DIAGNOSTIC CHECK .
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