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Home / DTC / B1712 — Mirror Switch R Input Shorted to Ground

B1712 — Mirror Switch R Input Shorted to Ground

Detailed page for trouble code B1712.

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22,461specific
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Code

B1712

HUMMER B — Body

Mirror Switch R Input Shorted to Ground

Brand: HUMMER
Type: B — Body
Views: UK: 19 EN: 17 RU: 21
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in door/jamb harness causing conductor to contact chassis ground
  • Corroded or pushed-out connector pin at mirror switch or BCM
  • Failed mirror switch (internal short to ground)
  • Water intrusion in mirror or connector causing short
  • Poor or missing ground or power reference at control module
  • Faulty BCM or mirror control module (less common)

Symptoms

  • Right-side mirror adjustment inoperative or intermittent
  • Mirror may move only in some directions or not at all
  • Related mirror functions (fold/unfold, heating) may be affected
  • DTC B1712 stored and may illuminate a message or indicator on some vehicles
  • Other body electrical anomalies in the same circuit (fuses, other switch codes)

What to check

  • Use a scan tool to confirm B1712, view freeze-frame and pending counts, then clear and attempt to re-create
  • Visual inspection of right door mirror, door harness, and door jamb wiring boot for damage, corrosion, or water
  • Inspect connectors at mirror, door harness, and BCM for pushed-out pins, corrosion, or bent terminals
  • With ignition ON, back-probe mirror switch signal wire and measure voltage vs ground while operating switch
  • With vehicle powered down, check continuity between the signal wire and chassis ground to detect a short
  • Wiggle test while monitoring voltage/continuity to identify intermittent shorts through door movement

Signal parameters

  • Expected: signal wire shows the reference voltage from the module (often ~5 V reference or battery voltage depending on vehicle) with no switch actuation
  • Actuation: voltage should change (rise/fall or switch to ground from the module) when mirror switch is operated
  • Fault reading: signal stuck near 0 V (ground) indicates a short to ground
  • Resistance (power off): signal circuit should show high resistance to chassis ground (typically >>1 kΩ); very low ohms indicates short
  • Current: a shorted input may show higher than normal current draw on that circuit when powered

Diagnostic algorithm

  1. Retrieve and record freeze frame and any related codes. Confirm B1712 is current or stored.
  2. Visually inspect mirror assembly, connector, door boot, and harness for damage, corrosion, or water entry. Repair visible damage.
  3. With ignition OFF, disconnect mirror switch connector. Measure resistance between the mirror switch signal wire and chassis ground. If low resistance, the short is in harness or mirror.
  4. If resistance is high with switch disconnected, reconnect and back-probe the signal wire with ignition ON. Measure voltage vs ground at rest and while operating the switch. If voltage is ~0 V and should be reference voltage, suspect short to ground upstream.
  5. Perform wiggle test of door harness (open/close door repeatedly) while monitoring voltage/continuity to locate intermittent faults at hinge/boot area.
  6. Inspect and test continuity of wiring from mirror connector through door boot to body harness and to BCM connector. Repair any open, shorted, or damaged wires.
  7. If wiring and connectors are good, swap or bench-test mirror switch (if available) or replace with known-good unit and re-test.
  8. After repairs, clear codes and verify function over repeated cycles. If code returns and wiring/switch checks good, consider BCM/module diagnosis per manufacturer procedures.
  9. Follow vehicle manufacturer repair manual for connector pin repair, wiring harness replacement, or BCM replacement as required.

Likely causes

  • Wiring abrasion at door hinge/boot where wires flex
  • Connector contamination/corrosion at mirror or door harness
  • Mirror switch internal short after impact or moisture exposure
  • Pin misalignment or bent terminal at connector
  • Previous door/harness repair with incorrectly routed wire

Fault status

⚠️ Status
Right mirror switch input circuit reports low voltage/short to ground. Code stored in body control module; mirror adjustment may be inoperative.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-2 hours

Similar codes

B1711 B1700 B1650 B1799
Repair manuals

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Code

B1712

MITSUBISHI B — Body

Rain sensor fail

Brand: MITSUBISHI
Type: B — Body
Views: UK: 18 EN: 19 RU: 25
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in door/jamb harness causing conductor to contact chassis ground
  • Corroded or pushed-out connector pin at mirror switch or BCM
  • Failed mirror switch (internal short to ground)
  • Water intrusion in mirror or connector causing short
  • Poor or missing ground or power reference at control module
  • Faulty BCM or mirror control module (less common)

Symptoms

  • Right-side mirror adjustment inoperative or intermittent
  • Mirror may move only in some directions or not at all
  • Related mirror functions (fold/unfold, heating) may be affected
  • DTC B1712 stored and may illuminate a message or indicator on some vehicles
  • Other body electrical anomalies in the same circuit (fuses, other switch codes)

What to check

  • Use a scan tool to confirm B1712, view freeze-frame and pending counts, then clear and attempt to re-create
  • Visual inspection of right door mirror, door harness, and door jamb wiring boot for damage, corrosion, or water
  • Inspect connectors at mirror, door harness, and BCM for pushed-out pins, corrosion, or bent terminals
  • With ignition ON, back-probe mirror switch signal wire and measure voltage vs ground while operating switch
  • With vehicle powered down, check continuity between the signal wire and chassis ground to detect a short
  • Wiggle test while monitoring voltage/continuity to identify intermittent shorts through door movement

Signal parameters

  • Expected: signal wire shows the reference voltage from the module (often ~5 V reference or battery voltage depending on vehicle) with no switch actuation
  • Actuation: voltage should change (rise/fall or switch to ground from the module) when mirror switch is operated
  • Fault reading: signal stuck near 0 V (ground) indicates a short to ground
  • Resistance (power off): signal circuit should show high resistance to chassis ground (typically >>1 kΩ); very low ohms indicates short
  • Current: a shorted input may show higher than normal current draw on that circuit when powered

Diagnostic algorithm

  1. Retrieve and record freeze frame and any related codes. Confirm B1712 is current or stored.
  2. Visually inspect mirror assembly, connector, door boot, and harness for damage, corrosion, or water entry. Repair visible damage.
  3. With ignition OFF, disconnect mirror switch connector. Measure resistance between the mirror switch signal wire and chassis ground. If low resistance, the short is in harness or mirror.
  4. If resistance is high with switch disconnected, reconnect and back-probe the signal wire with ignition ON. Measure voltage vs ground at rest and while operating the switch. If voltage is ~0 V and should be reference voltage, suspect short to ground upstream.
  5. Perform wiggle test of door harness (open/close door repeatedly) while monitoring voltage/continuity to locate intermittent faults at hinge/boot area.
  6. Inspect and test continuity of wiring from mirror connector through door boot to body harness and to BCM connector. Repair any open, shorted, or damaged wires.
  7. If wiring and connectors are good, swap or bench-test mirror switch (if available) or replace with known-good unit and re-test.
  8. After repairs, clear codes and verify function over repeated cycles. If code returns and wiring/switch checks good, consider BCM/module diagnosis per manufacturer procedures.
  9. Follow vehicle manufacturer repair manual for connector pin repair, wiring harness replacement, or BCM replacement as required.

Likely causes

  • Wiring abrasion at door hinge/boot where wires flex
  • Connector contamination/corrosion at mirror or door harness
  • Mirror switch internal short after impact or moisture exposure
  • Pin misalignment or bent terminal at connector
  • Previous door/harness repair with incorrectly routed wire

Fault status

⚠️ Status
Right mirror switch input circuit reports low voltage/short to ground. Code stored in body control module; mirror adjustment may be inoperative.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-2 hours

Similar codes

B1711 B1700 B1650 B1799
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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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
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Code

B1712

Other B — Body

Seat Driver Front Up Switch Circuit Short To Ground

Brand: Other
Type: B — Body
Views: UK: 29 EN: 44 RU: 31
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged or chafed wiring in door/jamb harness causing conductor to contact chassis ground
  • Corroded or pushed-out connector pin at mirror switch or BCM
  • Failed mirror switch (internal short to ground)
  • Water intrusion in mirror or connector causing short
  • Poor or missing ground or power reference at control module
  • Faulty BCM or mirror control module (less common)

Symptoms

  • Right-side mirror adjustment inoperative or intermittent
  • Mirror may move only in some directions or not at all
  • Related mirror functions (fold/unfold, heating) may be affected
  • DTC B1712 stored and may illuminate a message or indicator on some vehicles
  • Other body electrical anomalies in the same circuit (fuses, other switch codes)

What to check

  • Use a scan tool to confirm B1712, view freeze-frame and pending counts, then clear and attempt to re-create
  • Visual inspection of right door mirror, door harness, and door jamb wiring boot for damage, corrosion, or water
  • Inspect connectors at mirror, door harness, and BCM for pushed-out pins, corrosion, or bent terminals
  • With ignition ON, back-probe mirror switch signal wire and measure voltage vs ground while operating switch
  • With vehicle powered down, check continuity between the signal wire and chassis ground to detect a short
  • Wiggle test while monitoring voltage/continuity to identify intermittent shorts through door movement

Signal parameters

  • Expected: signal wire shows the reference voltage from the module (often ~5 V reference or battery voltage depending on vehicle) with no switch actuation
  • Actuation: voltage should change (rise/fall or switch to ground from the module) when mirror switch is operated
  • Fault reading: signal stuck near 0 V (ground) indicates a short to ground
  • Resistance (power off): signal circuit should show high resistance to chassis ground (typically >>1 kΩ); very low ohms indicates short
  • Current: a shorted input may show higher than normal current draw on that circuit when powered

Diagnostic algorithm

  1. Retrieve and record freeze frame and any related codes. Confirm B1712 is current or stored.
  2. Visually inspect mirror assembly, connector, door boot, and harness for damage, corrosion, or water entry. Repair visible damage.
  3. With ignition OFF, disconnect mirror switch connector. Measure resistance between the mirror switch signal wire and chassis ground. If low resistance, the short is in harness or mirror.
  4. If resistance is high with switch disconnected, reconnect and back-probe the signal wire with ignition ON. Measure voltage vs ground at rest and while operating the switch. If voltage is ~0 V and should be reference voltage, suspect short to ground upstream.
  5. Perform wiggle test of door harness (open/close door repeatedly) while monitoring voltage/continuity to locate intermittent faults at hinge/boot area.
  6. Inspect and test continuity of wiring from mirror connector through door boot to body harness and to BCM connector. Repair any open, shorted, or damaged wires.
  7. If wiring and connectors are good, swap or bench-test mirror switch (if available) or replace with known-good unit and re-test.
  8. After repairs, clear codes and verify function over repeated cycles. If code returns and wiring/switch checks good, consider BCM/module diagnosis per manufacturer procedures.
  9. Follow vehicle manufacturer repair manual for connector pin repair, wiring harness replacement, or BCM replacement as required.

Likely causes

  • Wiring abrasion at door hinge/boot where wires flex
  • Connector contamination/corrosion at mirror or door harness
  • Mirror switch internal short after impact or moisture exposure
  • Pin misalignment or bent terminal at connector
  • Previous door/harness repair with incorrectly routed wire

Fault status

⚠️ Status
Right mirror switch input circuit reports low voltage/short to ground. Code stored in body control module; mirror adjustment may be inoperative.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-2 hours

Similar codes

B1711 B1700 B1650 B1799
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