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Home >> Dodge and Ram >> 2002 >> Durango Base, 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> Symptom Tests >> Power Door Locks/Remote Keyless Entry System >> All Doors Fail To Lock & Unlock From One Switch
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All Doors Fail To Lock & Unlock From One Switch

Possible Causes:

CAUTION: Always turn ignition off before disconnecting or connecting any control module connector. Failure to do so could result in damage to control module.
NOTE: Ensure vehicle being tested has a fully charged battery. If it does not, false symptoms may occur.
NOTE: For component location, see appropriate illustration under COMPONENT LOCATIONS  . For terminal identification, see appropriate illustration under CONNECTOR IDENTIFICATION  . For circuit and wire color identification, see WIRING DIAGRAMS  . For component removal and installation procedures, see appropriate component under REMOVAL & INSTALLATION  .
NOTE: Driver Door Switch is integral to the Driver Door Module (DDM). Door Switches may also be referred to as Door Lock Switches.

Testing:

  1. Which Switch is inoperative?
    • If Driver Door Switch, go to next step.
    • If Passenger Door Switch, go to step  7 .
    • If Cylinder Lock Switch, go to step  12 .
  2. Turn ignition off. Disconnect DDM C1 harness connector. Turn ignition on. Measure voltage on DDM C1 harness connector terminal No. 7. Is voltage more than 10 volts? If yes, go to next step. If no, go to step  6 .
  3. Turn ignition off. Measure resistance between ground and DDM C1 harness connector terminals No. 8 and 11. Is resistance less than 5 ohms at both circuits? If yes, go to next step. If no, repair open in Ground circuit(s). Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  4. Disconnect CTM C2 harness connector. Measure voltage between CTM C2 harness connector terminal No. 10 and DDM C1 harness connector terminal No. 7. Is there any voltage present? If yes, repair Driver Door Switch MUX circuit for a short to voltage. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  5. If there are no possible causes remaining, replace Driver Door Lock Switch. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  6. Turn ignition off. Disconnect CTM C2 harness connector. Measure resistance between CTM C2 harness connector terminal No. 10 and DDM C1 harness connector terminal No. 7. Is resistance less than 5 ohms? If yes, replace CTM. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If no, repair open in Driver Door Switch MUX circuit. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
    7. NOTE: Passenger Door Switch may also be referred to as Passenger door Power Lock Switch.
  7. Turn ignition off. Disconnect Passenger Door Switch harness connector. Turn ignition on. Measure voltage on Passenger Door Switch harness connector terminal No. 1. Is voltage more than 10 volts? If yes, go to next step. If no, go to step  11 .
  8. Turn ignition off. Measure resistance between ground and Passenger Door Switch harness connector terminal No. 5. Is resistance less than 5 ohms? If yes, go to next step. If no, repair open in Ground circuit. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  9. Disconnect CTM C2 harness connector. Measure voltage between CTM C2 harness connector terminal No. 2 and Passenger Door Switch harness connector terminal No. 1. Is there any voltage present? If yes, repair Passenger Door Switch MUX circuit for a short to voltage. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  10. If there are no possible causes remaining, replace Passenger Door Switch. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  11. Turn ignition off. Disconnect CTM C2 harness connector. Measure resistance between CTM C2 harness connector terminal No. 2 and Passenger Door Switch harness connector terminal No. 1. Is resistance less than 5 ohms? If yes, replace CTM. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS. If no, repair open in Passenger Door Switch MUX circuit. Perform BODY VERIFICATION TEST 
  12. Disconnect the Cylinder Lock Switch harness connector at inoperative door. Measure resistance between ground and Cylinder Lock Switch harness connector terminal No. 1. Is resistance less than 5 ohms? If yes, go to next step. If no, repair open in Ground circuit. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  13. Turn ignition on. Measure voltage on Cylinder Lock Switch harness connector terminal No. 2. Is voltage more than 3 volts? If yes, go to next step. If no, repair open in Cylinder Lock Switch MUX/Sense circuit. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  14. If there are no possible causes remaining, replace Cylinder Lock Switch. Perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
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