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Incomplete Latch Release - Ratchet Switch Failure

NOTE: This DTC will only set after door cinch operation after 4-second time-out function. Conditions to set DTC may be difficult to reproduce.
NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. Using scan tool, record and erase DTCs. Turn ignition off. Wait approximately 10 seconds. Turn ignition on. Operate power sliding door several times if possible. Recheck for DTCs. If INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE resets, go to next step. If INCOMPLETE LATCH RELEASE - RATCHET SWITCH FAILURE does not reset, system is okay at this time. Check for intermittent poor connections or faulty circuits. See POWER DOOR LOCKS in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  2. Visually inspect sliding door for proper alignment, damaged strikers, damaged latches or obstructions. Repair as necessary. If possible, check operation of sliding door on a known-good vehicle. If sliding door effort is excessive, diagnose power sliding door. See TROUBLE SHOOTING in POWER SLIDING DOORS & LIFTGATE article. If sliding door effort is not excessive, go to next step.
  3. Using scan tool, select INPUTS/OUTPUTS and monitor RATCHET state. Open sliding door completely. Using a screwdriver, manually move sliding door cinch/release motor latch to second click (detent) and release using outside handle while observing DVOM. Repeat procedure several times while moving sliding door to different positions and wiggling wiring harness. If RATCHET state does not change every time sliding door cinch/release motor latch is manually moved, go to next step. If RATCHET state changes every time sliding door cinch/release motor latch is manually moved, replace Power Sliding Door Module (PSDM). See POWER SLIDING DOOR MODULE  under REMOVAL & INSTALLATION.
  4. Disconnect PSDM connector C2. See POWER SLIDING DOOR MODULE  under REMOVAL & INSTALLATION. Locate and disconnect sliding door latch sensing switch connector. See Figure. On left sliding door, using DVOM, measure resistance between sliding door latch sensing switch connector terminals No. 1 (Black/Gray wire) and No. 4 (Black/Gray wire) and PSDM connector C2 terminal No. 20 (Black/Tan wire). See Figure or Figureand Figure . On right sliding door, using DVOM, measure resistance between sliding door latch sensing switch connector terminals No. 1 (Black/Yellow wire) and No. 4 (Black/Yellow wire) and PSDM connector C2 terminal No. 20 (Black/Tan wire). On all doors, wiggle wiring harness with DVOM connected. If resistance is steady at 5 ohms or less at both terminals, go to next step. If resistance is greater than 5 ohms or varies at either or both terminals, repair open in ground circuit between PSDM and sliding door latch sensing switch. See POWER DOOR LOCKS in appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  5. Using DVOM, measure resistance of Tan/Orange wire between PSDM connector C2 terminal No. 12 and sliding door latch sensing switch connector terminal No. 3. Wiggle wiring harness and move sliding door to different positions with DVOM connected. If resistance is steady at 5 ohms or less, replace sliding door latch sensing switch. If resistance is greater than 5 ohms or varies, repair open in Tan/Orange wire.
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