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Home / DTC / B1560 — DR.cut SW fault

B1560 — DR.cut SW fault

Detailed page for trouble code B1560.

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22,461specific
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Code

B1560

MITSUBISHI B — Body

DR.cut SW fault

Brand: MITSUBISHI
Type: B — Body
Views: UK: 16 EN: 40 RU: 41
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty door cut / door ajar switch
  • Open or shorted wiring between switch and body/control module
  • Corroded or loose connector at switch or module
  • Blown fuse or power/ground fault affecting the circuit
  • Intermittent contact due to damage or contamination
  • Control module input fault (rare)

Symptoms

  • Door ajar / related warning lamp may be illuminated or intermittent
  • Interior lights may not behave correctly with door open/close
  • Central locking or alarm may not arm/disarm correctly
  • DTC stored and possible related system disablement

What to check

  • Retrieve freeze frame and live data with a scan tool; note which door input shows fault
  • Visual inspection of door switch, harness in hinge/door jamb, and connectors for damage or corrosion
  • Check related fuse(s) and ground points
  • Operate the door switch manually while monitoring live signal at module and switch connector
  • Perform continuity and resistance checks on switch and wiring

Signal parameters

  • Switch closed: continuity to ground (≈0 ohms) or signal near 0 V at module input (depending on circuit design)
  • Switch open: open circuit or signal pulled to battery voltage via pull-up (approx. 9–14 V)
  • Intermittent: fluctuating voltage between 0 V and battery voltage or unstable resistance
  • Typical switch resistance when closed: low (

Diagnostic algorithm

  1. Confirm DTC and note affected door(s) using an OBD scan tool. Record any freeze frame or live data.
  2. Visually inspect the door switch, striker area, wiring through the door hinge, and connectors for physical damage, corrosion, or pin push-out.
  3. Check fuses and chassis grounds related to the body control/door circuits.
  4. Backprobe the switch connector and monitor voltage while operating the door switch. Verify expected open/closed signal levels match signal_params.
  5. If voltage is incorrect, trace wiring to locate opens/shorts; repair broken wires, pin damage, or poor crimps as needed.
  6. If switch operation is suspect, remove and bench test or replace the switch and retest.
  7. If wiring and switch check good, check voltage/signal at the control module connector; if module input is inactive or erratic, consider module repair/replacement only after confirming wiring/switch integrity.
  8. After repairs, clear DTCs and perform functional test by cycling the door and verifying no reoccurrence of B1560.

Likely causes

  • Damaged door switch or plunger
  • Broken wiring harness in door hinge area
  • Connector corrosion or bent pins at switch/module
  • Ground disconnected or high resistance ground
  • Aftermarket equipment or prior repair damage

Fault status

⚠️ Status
Door cut switch circuit fault detected — open/short or implausible signal from the door switch input.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

Similar codes

B1561 B1570 B1600 B1620 B1000
406

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

MITSUBISHI

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Code

B1560

Other B — Body

Door Lock Cylinder Circuit Open

Brand: Other
Type: B — Body
Views: UK: 27 EN: 59 RU: 55
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty door cut / door ajar switch
  • Open or shorted wiring between switch and body/control module
  • Corroded or loose connector at switch or module
  • Blown fuse or power/ground fault affecting the circuit
  • Intermittent contact due to damage or contamination
  • Control module input fault (rare)

Symptoms

  • Door ajar / related warning lamp may be illuminated or intermittent
  • Interior lights may not behave correctly with door open/close
  • Central locking or alarm may not arm/disarm correctly
  • DTC stored and possible related system disablement

What to check

  • Retrieve freeze frame and live data with a scan tool; note which door input shows fault
  • Visual inspection of door switch, harness in hinge/door jamb, and connectors for damage or corrosion
  • Check related fuse(s) and ground points
  • Operate the door switch manually while monitoring live signal at module and switch connector
  • Perform continuity and resistance checks on switch and wiring

Signal parameters

  • Switch closed: continuity to ground (≈0 ohms) or signal near 0 V at module input (depending on circuit design)
  • Switch open: open circuit or signal pulled to battery voltage via pull-up (approx. 9–14 V)
  • Intermittent: fluctuating voltage between 0 V and battery voltage or unstable resistance
  • Typical switch resistance when closed: low (

Diagnostic algorithm

  1. Confirm DTC and note affected door(s) using an OBD scan tool. Record any freeze frame or live data.
  2. Visually inspect the door switch, striker area, wiring through the door hinge, and connectors for physical damage, corrosion, or pin push-out.
  3. Check fuses and chassis grounds related to the body control/door circuits.
  4. Backprobe the switch connector and monitor voltage while operating the door switch. Verify expected open/closed signal levels match signal_params.
  5. If voltage is incorrect, trace wiring to locate opens/shorts; repair broken wires, pin damage, or poor crimps as needed.
  6. If switch operation is suspect, remove and bench test or replace the switch and retest.
  7. If wiring and switch check good, check voltage/signal at the control module connector; if module input is inactive or erratic, consider module repair/replacement only after confirming wiring/switch integrity.
  8. After repairs, clear DTCs and perform functional test by cycling the door and verifying no reoccurrence of B1560.

Likely causes

  • Damaged door switch or plunger
  • Broken wiring harness in door hinge area
  • Connector corrosion or bent pins at switch/module
  • Ground disconnected or high resistance ground
  • Aftermarket equipment or prior repair damage

Fault status

⚠️ Status
Door cut switch circuit fault detected — open/short or implausible signal from the door switch input.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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