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Home / DTC / B2944 — Down latch RH open:open line

B2944 — Down latch RH open:open line

Detailed page for trouble code B2944.

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Code

B2944

MITSUBISHI B — Body

Down latch RH open:open line

Brand: MITSUBISHI
Type: B — Body
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Page language: EN

Causes

  • Broken or damaged wiring in the RH latch harness (open circuit).
  • Loose, disconnected, corroded or bent connector at the RH latch switch.
  • Faulty RH down-latch switch or latch assembly.
  • Water intrusion or corrosion inside latch connector or switch.
  • Blown fuse or poor ground affecting the latch circuit.
  • Faulty body control module (BCM) or related control unit (less common).

Symptoms

  • DTC B2944 stored and MIL/indicator related to latch may illuminate.
  • Right-hand down latch reported as open; affected component may not latch/lock.
  • Related system operation inhibited (e.g., convertible top, tailgate, sliding roof or door locking function depending on vehicle model).
  • Intermittent operation or inability to secure the associated panel/door.
  • Possible warning chime or message on instrument cluster.

What to check

  • Read and record freeze-frame and associated data with a scan tool; check for other related codes.
  • Visual inspection of RH latch, connector, and wiring harness for damage, corrosion or pinched wires.
  • Check connector mating surfaces and terminal integrity; look for water or rust.
  • Verify fuses and ground points related to the latch circuit.
  • Backprobe connector with scan tool or DMM while operating latch to observe signal changes.
  • Perform continuity/resistance check between latch switch terminal and control module connector.

Signal parameters

  • At rest (open): latch switch circuit typically shows high resistance/open or battery voltage depending on circuit design.
  • When latch closed: circuit usually switches to ground or near 0 V – expect low resistance (
  • Connector pin voltage with ignition on: either ~12 V or 0 V depending on sensor type; consult vehicle wiring diagram for exact reference.
  • Open-circuit (fault present): DMM shows infinite/OL on continuity test or no expected voltage change when operating latch.

Diagnostic algorithm

  1. Retrieve all relevant codes and live data; note time stamp and any interrelated codes. Clear codes and attempt to reproduce fault.
  2. Visually inspect the RH latch assembly, connector and wiring harness for obvious damage, corrosion, pinched wires or water entry.
  3. With ignition on, backprobe the latch connector and observe signal with a DMM or scope while actuating latch; verify expected voltage change or continuity when latch is operated.
  4. Perform a continuity check from the latch switch terminal to the control module connector. Repair any open circuit or high resistance found.
  5. If connector or terminals are corroded/damaged, repair or replace terminals and protect against moisture. Recheck operation.
  6. If wiring and connector are good, bench-test or replace the RH latch switch/assembly and confirm correct operation.
  7. If new latch and wiring are confirmed good and code persists, inspect related fuses, grounds and then consider control module input circuit testing or module replacement after verifying with manufacturer procedures.
  8. After repair, clear codes and perform full function test and road/test the system to ensure the fault does not return.

Likely causes

  • Connector disconnected, corroded or pin pushed out at RH latch.
  • Broken wire near hinge, door, or moving joint in RH latch harness.
  • Failed latch switch inside the latch assembly.
  • Water intrusion causing intermittent open/short conditions.

Fault status

⚠️ Status
Open circuit detected on right-hand down latch open switch line — latch reported as open (open line).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B2940 B2941 B2942 B2943 B2945
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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