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Home >> Chrysler >> 2000 >> Intrepid Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Diagnosis - 42LE Automatic Transmission >> Diagnostic Tests >> DTC P1716: Bus Communication With Engine Module >> Diagnostic Procedure
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Diagnostic Procedure

  1. Using scan tool, check STARTS SINCE SET counter for DTC P1716. If counter is set at zero, go to next step. If counter is not set at zero, go to step  6.
  2. Using scan tool, attempt to communicate with BCM. If communication with BCM is not possible, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If communication with BCM is possible, go to next step.
  3. Using scan tool, attempt to communicate with PCM. If communication with PCM is not possible, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If communication with PCM is possible, go to next step.
  4. Using scan tool, check all modules on vehicle for bus problems. If there is evidence of a bus problem, or PRNDL display on scan tool indicates NO BUS, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If no evidence of bus problems are present, go to next step.
  5. Turn ignition on. Using scan tool, erase DTCs. Start engine and allow it to idle for at least 30 seconds. Using scan tool, check for DTCs. If DTC P1716 is displayed on scan tool, TCM is assumed to be faulty. Repair or replace as necessary. If P1716 is not displayed on scan tool, go to next step.
  6. Conditions necessary to set DTC are not present at this time. Using appropriate wiring diagram as a guide, inspect wiring and connectors associated with circuits in question. See WIRING DIAGRAMS . Wiggle wires while checking for shorted and open circuits. Repair as necessary. If circuits are okay, testing is complete.
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