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Home / DTC / B1484 — F ABG(2)DR active circuit short

B1484 — F ABG(2)DR active circuit short

Detailed page for trouble code B1484.

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Code

B1484

MITSUBISHI B — Body

F ABG(2)DR active circuit short

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

Causes

  • Short to ground in the F ABG(2)DR harness
  • Short to battery/constant power in the circuit
  • Damaged, pinched, or chafed wiring (common at door hinge areas)
  • Corroded or loose connector pins
  • Water intrusion in connector or module
  • Failed actuator/component on the F ABG(2)DR circuit

Symptoms

  • Associated system warning lamp or message illuminated
  • Related function inoperative or intermittent (depends on circuit purpose)
  • DTC B1484 stored in body/control module
  • Possible blown fuse for the affected circuit
  • Intermittent operation when wiring is moved (indicates harness fault)

What to check

  • Read and record all stored codes and freeze-frame data with a scanner; check for related codes.
  • Consult vehicle-specific wiring diagram and component location for F ABG(2)DR.
  • Visually inspect wiring harnesses, connector boots and pins for damage, corrosion, or water.
  • Check fuses and relays for the circuit; replace if blown and note if it blows again.
  • Disconnect the target component connector and see if the DTC clears or changes.
  • Backprobe connector and measure supply voltage, ground continuity and signal while operating the circuit.

Signal parameters

  • Supply voltage: approx. battery voltage (11–14 V) at circuit power feed when key on.
  • Ground: near 0 V at proper ground point; continuity to chassis ground should be low resistance.
  • When component disconnected: no battery voltage should appear on sensor/signal return unless shorted to power.
  • When short to ground exists: very low resistance between circuit and chassis ground (close to 0 Ω).
  • When short to battery exists: circuit shows battery voltage with component disconnected.
  • Refer to the vehicle service manual for exact component resistance or waveform specs.

Diagnostic algorithm

  1. Connect a capable scan tool, confirm B1484 and any additional codes, save freeze-frame data.
  2. Review wiring diagram to identify harness routing, connectors, fuses, and module pins for F ABG(2)DR.
  3. Perform a careful visual inspection of the harness and connectors, paying attention to door hinges and moving joints.
  4. Inspect and, if necessary, unplug the component at the circuit (F ABG(2)DR). Clear codes and see if DTC returns to determine if the fault is in harness or component.
  5. With connector disconnected, measure resistance from circuit conductor to battery positive and chassis ground to identify short to power or ground.
  6. With ignition ON, backprobe the harness at the module/connector. Measure supply voltage and signal. Operate the circuit and observe changes.
  7. If short suspected in harness, isolate by disconnecting sections or removing fuse, then reconnect sections to locate the short. Use an inline fused test lamp or low-current test lamp when isolating to avoid damage.
  8. Repair damaged wiring (splice with proper gauge wire and insulation, replace harness sections or pigtails), clean or replace corroded connectors, and replace faulty actuator/component as required.
  9. After repair, clear codes, perform function tests and a road or operation test to confirm the repair. Re-scan to ensure code does not return.
  10. If no wiring/component fault found and code persists, consider module driver fault and verify module grounds and power. Follow manufacturer procedure for module testing/ replacement.

Likely causes

  • Chafed wiring at a door hinge or moving joint
  • Water or corrosion in the door/inner harness connector
  • Failed actuator or sensor on the F ABG(2)DR circuit
  • Poor or incomplete previous repair where insulation was not restored

Fault status

⚠️ Status
Active-circuit short detected on F ABG(2)DR — abnormal voltage or current (possible short to ground or battery, or low-resistance fault) in the circuit. Inspection of wiring, connectors and component required.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

B1480 B1481 B1482 B1483 B1485 B1490
406

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