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UTD Will Not Arm

  1. If power door locks do not operate, see DOOR LOCKS - POWER article. If power door locks do operate, use Tech 1 scan tester to monitor power door unlock and lock inputs.
  2. Using right and left door lock switches, lock/unlock doors. If scan tester does not indicate unlock and lock inputs as doors are being unlocked and locked, check for poor connection at CCM connector C1, terminals "B" (Tan wire) and "D" (Gray wire). If connection is okay, check Tan and Gray wires for open circuit. If wiring is okay, replace CCM.
  3. If scan tester does indicate lock/unlock inputs, monitor door ajar and hatch ajar inputs. If scan tester does not show transition of door ajar and hatch ajar inputs as doors and hatch are opened and closed, go to DOOR AJAR & HATCH AJAR SWITCH TEST.
  4. If scan tester does show transition of door ajar and hatch ajar inputs, use Tech 1 to monitor door key inputs. If Tech 1 scan tester does not correctly show transition of right and left door key switches as key is turned, go to UTD SYSTEM WILL NOT DISARM WITH DOOR KEY test.
  5. If Tech 1 scan tester does correctly show transition of right and left door key switches, discontinue diagnostics. Turn ignition switch to RUN position. If PASSIVE KEYLESS ENTRY telltale does not illuminate on Driver Information Center (DIC) during bulb check, diagnose keyless entry system. See KEYLESS ENTRY SYSTEM article.
  6. If PASSIVE KEYLESS ENTRY telltale does illuminate on Driver Information Center (DIC) during bulb check, check if power door locks unlock and lock when passive keyless entry transmitter is brought into range and out of range. If doors do not lock and unlock, see the KEYLESS ENTRY SYSTEM article.
  7. If doors do lock and unlock, leave connector connected and measure voltage between Passive Keyless Entry (PKE) module Gray connector C2, terminal B1 (Yellow wire) and ground. If voltage is approximately 12 volts, go to step 9).
  8. If voltage is not approximately 12 volts, disconnect PKE module Gray connector C2. Measure voltage between terminal B1 (Yellow wire) and ground. If approximately 12 volts are present, replace PKE module. If approximately 12 volts are not present, check for short to ground in Yellow wire to CCM. If wire is okay, replace CCM.
  9. If voltage is approximately 12 volts in step 7), continue to probe terminal B1 to ground. Set voltmeter to detect minimum voltage on millisecond range. Close doors and hatch. Move PKE transmitter out of range.
  10. If voltage changes from approximately 12 volts to approximately .5-1.0 volts when doors lock, replace CCM. If voltage does not change as indicated, check for poor connection at PKE module connector. If connection is okay, replace PKE module.
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