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Home >> GMC >> 1995 >> Jimmy 4D Utility, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (Anti-Lock Brake System - Rear (2.2L)) >> Trouble Codes >> DTC 7 - Shorted Isolation Solenoid Or EBCM Fault >> Notes

DTC 7 - Shorted Isolation Solenoid Or EBCM Fault: Notes

WARNING: This page is about a different car, the 1995 GMC Sonoma. 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. Turn ignition on. Measure voltage between Green wire and Black wire terminals of EBCM 4-pin connector. If voltage is 1-15 volts, go to step 3). If voltage is not 1-15 volts, go to next step.
  2. Turn ignition off. Replace EBCM. See removal procedures for ELECTRONIC BRAKE CONTROL MODULE (EBCM)  . After EBCM replacement, perform SYSTEM DIAGNOSTIC CHECK  .
  3. Turn ignition off. Measure resistance between Green wire and Black wire terminals of EBCM 4-pin connector. If resistance is 3-6 ohms, go to step 5). If resistance is not 3-6 ohms, go to next step.
  4. Replace Anti-Lock Pressure Valve (APV). See removal procedures for ANTI-LOCK PRESSURE VALVE  . After replacement of APV, perform SYSTEM DIAGNOSTIC CHECK  .
  5. Check for poor connection at EBCM 4-pin connector and harness connector. If connections are okay, go to step 4). If connections are not okay, go to next step.
  6. Repair EBCM 4-pin connector or harness connector as necessary. Measure resistance in Green wire between EBCM 4-pin connector and APV valve body. If resistance present, go to step 4). If resistance is infinite (open circuit), clear DTCs. See CLEARING CODES  . Perform SYSTEM DIAGNOSTIC CHECK  .
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