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Home >> Oldsmobile >> 1999 >> Bravada >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Diagnostic Tests >> DTC B3102: Keyless Entry (RFA) Data Link Circuit Low >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform BCM diagnostic system check. See BCM DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS. After performing system check, go to next step.
  2. Disconnect Brown 24-pin BCM connector. Remove connector comb from Brown BCM connector. Using DVOM connected to ground, measure voltage (backprobe) at Brown 24-pin BCM connector terminal B4 (Orange wire). If battery voltage exists, go to step 6). If battery voltage does not exist, go to next step.
  3. Disconnect receiver control module. See COMPONENT LOCATIONS  . Using DVOM, check for continuity between ground and Brown 24-pin BCM connector terminal B4 (Orange wire). If continuity to ground exists, go to next step. If continuity to ground does not exist, go to step 5).
  4. Repair short to ground in Orange wire between Brown 24-pin BCM connector terminal B4 and receiver control module connector terminal No. 2. See WIRING DIAGRAMS  . After repairs, go to step 7).
  5. Replace receiver control module. See RECEIVER CONTROL MODULE under REMOVAL & INSTALLATION in REMOTE KEYLESS ENTRY SYSTEMS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article. After replacing receiver control module, go to step 7).
  6. Replace BCM. See BODY CONTROL MODULE (BCM)  under REMOVAL & INSTALLATION. Program BCM and perform relearn procedure. See PROGRAMMING  . After programming module, go to next step.
  7. Clear DTCs. After clearing DTCs, perform BCM diagnostic system check. See BCM DIAGNOSTIC SYSTEM CHECK  under SYSTEM TESTS.
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