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Home / DTC / B2887 — R.center latch motor:overheated

B2887 — R.center latch motor:overheated

Detailed page for trouble code B2887.

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Code

B2887

MITSUBISHI B — Body

R.center latch motor:overheated

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

Causes

  • Mechanical binding or obstruction in the latch/striker assembly
  • Worn or failing latch motor or gear reduction
  • Foreign debris, corrosion, or inadequate lubrication causing excessive torque
  • Shorted or damaged wiring causing overcurrent
  • Faulty connector or poor ground increasing resistance and heat
  • Faulty control module or driver circuit within the module

Symptoms

  • Rear center latch does not operate or is intermittent
  • Latch operates slowly or stalls partway
  • Unusual noise from latch (grinding, whining)
  • Burnt plastic smell near the latch or connector
  • Related fuses blowing or other latch circuits showing faults
  • DTC B2887 stored and possibly other latch-related codes present

What to check

  • Read/system scan: retrieve B2887, freeze-frame data and any related codes
  • Visually inspect latch assembly, wiring harness, and connector for damage, corrosion or melted insulation
  • Try manual operation of the latch (release/operate by hand) to check for binding
  • Check fuse(s) and any related relays for signs of overheating or failure
  • Check for burnt smell or heat damage at the motor and connector
  • Measure supply voltage at the motor connector while operating (key on / command)

Signal parameters

  • Supply voltage to motor: approximately 11–14 V during operation (depends on battery/charging)
  • Normal operating current: usually low amperage; stall/current spike can be several amps — refer to factory spec
  • Motor winding resistance: typically a few ohms (check service manual for exact value)
  • Operation time: latch should complete movement within a few seconds; prolonged run indicates problem
  • Overheat/thermal trip occurs when motor current/time exceeds manufacturer threshold (varies by model)

Diagnostic algorithm

  1. Use a scan tool to read B2887 and any related codes. Note freeze-frame data and command counts.
  2. Visually inspect the latch, linkage, striker and surrounding area for physical obstruction, corrosion or damage. Clear debris and verify free movement by hand.
  3. Inspect wiring and connector at the latch for corrosion, bent pins, melted insulation or poor engagement. Repair/replace as needed.
  4. With battery charged, command the latch while measuring supply voltage at the motor connector. Verify proper voltage reaches the motor during operation.
  5. Measure motor current with a clamp meter while operating. Compare measured current to service limits. High current or stall indicates mechanical or motor failure.
  6. With battery disconnected, measure motor winding resistance. Very low or open readings suggest internal short or open winding.
  7. If wiring and motor checks are good, test the driver output from the body/control module (scope or test lamp) to confirm correct switching and no excessive voltage drop. Check module grounds.
  8. If the motor overheats after repeated cycles, inspect duty-cycle and operation history; test after cooling. Replace motor if it repeatedly trips thermal protective device.
  9. Repair or replace damaged wiring, connector, latch motor, or the latch assembly as indicated. Replace control module only after confirming driver output fault.
  10. After repair, clear codes and perform several functional cycles to confirm correct operation and that B2887 does not return.

Likely causes

  • Latch mechanism jammed (debris, misalignment or bent components)
  • Latch motor internal wear or shorted windings
  • Connector pin corrosion or partially open ground
  • Control module driver transistor partially failed under load
  • Repeated cycling of the latch (child lock, remote activation) causing thermal trip

Fault status

⚠️ Status
Control module detected overheat/overcurrent condition on the rear center latch motor and logged DTC B2887. Motor output may be disabled until temperature/current returns to safe levels.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1 - 2 hours

Similar codes

B2886 B2888 B2890 B2781
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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