FixVault
Home › Chevrolet › 2000 › Impala LS › Repair and Diagnosis › Body & Frame › Door Locks › Remote Keyless Entry Systems › Diagnostic Tests › DTC B3102: Keyless Entry Data Link Circuit Low › Diagnostic Procedure

Diagnostic Procedure

  1. If diagnostic system check was performed, go to next step. If diagnostic system check was not performed, see DIAGNOSTIC SYSTEM CHECK  .
  2. Connect scan tool. Turn ignition on, engine off. Using scan tool, check status of DTC B1302. If DTC is current, go to next step. If DTC is not current, problem is intermittent.
  3. Turn ignition off. Disconnect RCDLR. Connect a DVOM between RCDLR connector terminal No. 2 and ground. See Figure . If voltage is not battery voltage, go to next step. If voltage is battery voltage, go to step  5 .
  4. Check Light Green wire between RCDLR connector terminal No. 2 and BCM connector C1 terminal A11 for short ground. If problem was found, repair as necessary, and go to step  7 . If problem was not found, go to step  6 .
  5. Check RCDLR connector for poor connections. If connector is okay, replace RCDLR. See REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR)  under REMOVAL & INSTALLATION. Reprogram transmitters. See TRANSMITTER PROGRAMMING  under PROGRAMMING. Go to step  7 .
  6. Check BCM connectors for poor connections. If connectors are okay, replace BCM. See appropriate BODY CONTROL MODULES article. Go to next step.
  7. Using scan tool, clear DTCs. Operate system to verify repair.
About FixVault