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Home / DTC / B2947 — Down latch RH open:open timeout

B2947 — Down latch RH open:open timeout

Detailed page for trouble code B2947.

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22,491specific
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Code

B2947

MITSUBISHI B — Body

Down latch RH open:open timeout

Brand: MITSUBISHI
Type: B — Body
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty RH down-latch position switch or sensor
  • Mechanical binding or obstruction in RH latch mechanism
  • Corroded/damaged wiring or poor connector at the latch
  • Failed latch actuator/solenoid or motor
  • Misadjusted or physically damaged latch that prevents full travel
  • Faulty body control module or intermittent module input

Symptoms

  • RH door/lid/cover (application-specific) does not unlatch or report as open
  • Warning or fault indicator related to door/latch operation
  • Intermittent or no response when using switch/remote to open RH latch
  • DTC B2947 stored and possibly other related body/latch codes

What to check

  • Retrieve freeze-frame data and clear codes, then reattempt operation to re-create the fault
  • Visually inspect RH latch assembly, linkage and surrounding area for obstructions, damage or corrosion
  • Inspect wiring harness and connector at the RH latch for corrosion, corrosion, pin damage, pushed-out terminals or water ingress
  • Operate the latch while watching the connector to detect intermittent signals or connector movement
  • Check battery and vehicle supply voltage during operation (low voltage can cause timeouts)
  • Listen for actuator/solenoid operation when latch is commanded

Signal parameters

  • Signal type: latch position switch or position sensor (digital switch or hall-type)
  • Expected behavior: sensor state should change within a short time after the open command (timeout threshold set by BCM)
  • Typical logic: a discrete switch will change between two logic states; a position sensor will change voltage level when moved (approx. low vs near-battery level depending on vehicle wiring)
  • Monitor waveform: state change should occur reliably each cycle when commanded/opened

Diagnostic algorithm

  1. Confirm DTC with a scan tool and note freeze-frame/occurrence conditions. Clear codes and attempt to reproduce. 2) Observe operation while commanding RH latch (use remote or interior switch). Note if latch moves, stalls, or makes no sound. 3) Perform a visual and hands-on inspection of the RH latch assembly, latch linkage and striker for binding, foreign objects, or damage. Manually operate latch to check free movement. 4) Inspect connector and wiring at the latch for corrosion, bent pins, or loose terminals. Wiggle test harness while commanding latch to identify intermittent faults. 5) With a multimeter or oscilloscope, monitor the latch position switch signal (or sensor voltage) while commanding the latch. Verify the expected change of state/voltage occurs within a few seconds. 6) Measure continuity/resistance of wiring between the BCM and latch; check for shorts to ground or battery. Repair any wiring faults. 7) If actuator does not operate but wiring and commands are good, bench-test or substitute a known-good latch/actuator to confirm failure. 8) Replace the latch assembly or actuator only after verifying electrical and mechanical faults. Reassemble, clear codes and perform functional tests to confirm repair. 9) If problem persists after replacing hardware, test/inspect the body control module inputs and outputs and consult wiring diagrams; replace or reprogram BCM only if confirmed defective.

Likely causes

  • RH latch position switch failed (no change of state when latch moves)
  • Wiring fault (short/open/high resistance) between RH latch and BCM
  • Mechanical seizure, misalignment, or obstruction preventing latch movement
  • Latch actuator not driving the mechanism despite command

Fault status

⚠️ Status
Timeout: RH down-latch did not reach/open position (no sensor change within expected time).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B2946 B2948 B2815 B2920 B2A00
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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