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Home / DTC / C1712 — Left Front Damper Actuator Open Circuit

C1712 — Left Front Damper Actuator Open Circuit

Detailed page for trouble code C1712.

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C1712

HUMMER C — Chassis

Left Front Damper Actuator Open Circuit

Brand: HUMMER
Type: C — Chassis
Views: UK: 9 EN: 26 RU: 14
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the left front damper circuit
  • Corroded or loose connector at the damper actuator or control module
  • Failed damper actuator (internal open coil or connector)
  • Blown fuse or faulty relay supplying the suspension damper circuit
  • Poor or missing ground for the suspension control/actuator circuit
  • Internal fault in the suspension control module or related ECU/software fault

Symptoms

  • Suspension warning lamp or message displayed
  • Left front corner of vehicle stuck at one ride height or not adjusting
  • Harsh or soft ride on left front wheel; uneven ride height
  • Reduced vehicle stability or traction control events related to suspension
  • Fault stored in suspension control module; possible limp or limited suspension operation

What to check

  • Read DTCs and freeze frame with a capable scan tool; note any related codes
  • Retrieve live data: commanded damper position, actual position/feedback, actuator current and voltage while commanding dampers
  • Visually inspect left front damper actuator, connector, and wiring harness for damage or corrosion
  • Check relevant fuses and relays for the suspension/actuator circuit
  • Perform wiggle test on harness and connector while monitoring live data or watching for intermittent faults
  • Measure continuity and resistance between actuator connector and suspension control module pins with connectors disconnected

Signal parameters

  • Actuator supply voltage (nominal ~12 V)
  • Actuator ground continuity (ohms to chassis ground)
  • Actuator coil/resistance (ohms)
  • Actuator command signal (percentage, counts or PWM duty as reported by module)
  • Actuator feedback/position sensor value (volts or counts)
  • Actuator current draw (amps) when commanded

Diagnostic algorithm

  1. Connect a professional scan tool; record all suspension-related DTCs and freeze frame data.
  2. Verify vehicle is on level surface and safe to work on. Disable any automatic raising systems per service manual before disconnecting components.
  3. Visually inspect LF damper connector and wiring for damage, corrosion, pin push-out or water intrusion; repair or reseal as needed.
  4. Check and verify relevant fuses/relays for the suspension system; replace if blown.
  5. With connector attached, monitor live data while commanding the LF damper (if tool allows). Note if command is sent and whether feedback/position or current changes.
  6. If no response, turn ignition OFF and disconnect the actuator connector. Measure continuity/resistance between actuator connector pins and the suspension control module connector pins. Compare to service spec; an open or infinite reading indicates a wiring open — trace and repair.
  7. With ignition ON and connector disconnected, verify supply voltage and ground at the actuator connector when the system is commanded. If no power or ground, inspect upstream wiring, fuses, relays and module outputs.
  8. If wiring and power/ground are good, bench-test the actuator with proper test voltage per service manual. If actuator does not operate or has open resistance, replace actuator.
  9. After repair or replacement, clear codes, cycle ignition and re-test actuator operation through scan tool. Perform a road or static operational test to confirm proper function and verify the code does not return.
  10. If wiring and actuator test good but code remains, suspect the suspension control module output or internal fault; consult service manual for module tests, update software, or consider module replacement following further diagnostics.

Likely causes

  • Open or broken conductor in harness to left front damper
  • Seized/corroded actuator connector pins or water intrusion at connector
  • Failed actuator motor or position sensor (internal open)
  • Blown fuse feeding actuator power
  • Detached or corroded ground at chassis or module

Fault status

⚠️ Status
Left Front Damper Actuator Open Circuit — service suspension system
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5 - 3.0 hours

Similar codes

C1710 C1711 C1713 C1720 C1722
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Code

C1712

LAND ROVER C — Chassis

Failure in the left seat heater sensor - short circuit to the battery / disconnected

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 9 EN: 25 RU: 12
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the left front damper circuit
  • Corroded or loose connector at the damper actuator or control module
  • Failed damper actuator (internal open coil or connector)
  • Blown fuse or faulty relay supplying the suspension damper circuit
  • Poor or missing ground for the suspension control/actuator circuit
  • Internal fault in the suspension control module or related ECU/software fault

Symptoms

  • Suspension warning lamp or message displayed
  • Left front corner of vehicle stuck at one ride height or not adjusting
  • Harsh or soft ride on left front wheel; uneven ride height
  • Reduced vehicle stability or traction control events related to suspension
  • Fault stored in suspension control module; possible limp or limited suspension operation

What to check

  • Read DTCs and freeze frame with a capable scan tool; note any related codes
  • Retrieve live data: commanded damper position, actual position/feedback, actuator current and voltage while commanding dampers
  • Visually inspect left front damper actuator, connector, and wiring harness for damage or corrosion
  • Check relevant fuses and relays for the suspension/actuator circuit
  • Perform wiggle test on harness and connector while monitoring live data or watching for intermittent faults
  • Measure continuity and resistance between actuator connector and suspension control module pins with connectors disconnected

Signal parameters

  • Actuator supply voltage (nominal ~12 V)
  • Actuator ground continuity (ohms to chassis ground)
  • Actuator coil/resistance (ohms)
  • Actuator command signal (percentage, counts or PWM duty as reported by module)
  • Actuator feedback/position sensor value (volts or counts)
  • Actuator current draw (amps) when commanded

Diagnostic algorithm

  1. Connect a professional scan tool; record all suspension-related DTCs and freeze frame data.
  2. Verify vehicle is on level surface and safe to work on. Disable any automatic raising systems per service manual before disconnecting components.
  3. Visually inspect LF damper connector and wiring for damage, corrosion, pin push-out or water intrusion; repair or reseal as needed.
  4. Check and verify relevant fuses/relays for the suspension system; replace if blown.
  5. With connector attached, monitor live data while commanding the LF damper (if tool allows). Note if command is sent and whether feedback/position or current changes.
  6. If no response, turn ignition OFF and disconnect the actuator connector. Measure continuity/resistance between actuator connector pins and the suspension control module connector pins. Compare to service spec; an open or infinite reading indicates a wiring open — trace and repair.
  7. With ignition ON and connector disconnected, verify supply voltage and ground at the actuator connector when the system is commanded. If no power or ground, inspect upstream wiring, fuses, relays and module outputs.
  8. If wiring and power/ground are good, bench-test the actuator with proper test voltage per service manual. If actuator does not operate or has open resistance, replace actuator.
  9. After repair or replacement, clear codes, cycle ignition and re-test actuator operation through scan tool. Perform a road or static operational test to confirm proper function and verify the code does not return.
  10. If wiring and actuator test good but code remains, suspect the suspension control module output or internal fault; consult service manual for module tests, update software, or consider module replacement following further diagnostics.

Likely causes

  • Open or broken conductor in harness to left front damper
  • Seized/corroded actuator connector pins or water intrusion at connector
  • Failed actuator motor or position sensor (internal open)
  • Blown fuse feeding actuator power
  • Detached or corroded ground at chassis or module

Fault status

⚠️ Status
Left Front Damper Actuator Open Circuit — service suspension system
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5 - 3.0 hours

Similar codes

C1710 C1711 C1713 C1720 C1722
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Code

C1712

Other C — Chassis

Left Front Sensor Circuit Failure

Brand: Other
Type: C — Chassis
Views: UK: 25 EN: 49 RU: 30
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Broken or disconnected wiring in the left front damper circuit
  • Corroded or loose connector at the damper actuator or control module
  • Failed damper actuator (internal open coil or connector)
  • Blown fuse or faulty relay supplying the suspension damper circuit
  • Poor or missing ground for the suspension control/actuator circuit
  • Internal fault in the suspension control module or related ECU/software fault

Symptoms

  • Suspension warning lamp or message displayed
  • Left front corner of vehicle stuck at one ride height or not adjusting
  • Harsh or soft ride on left front wheel; uneven ride height
  • Reduced vehicle stability or traction control events related to suspension
  • Fault stored in suspension control module; possible limp or limited suspension operation

What to check

  • Read DTCs and freeze frame with a capable scan tool; note any related codes
  • Retrieve live data: commanded damper position, actual position/feedback, actuator current and voltage while commanding dampers
  • Visually inspect left front damper actuator, connector, and wiring harness for damage or corrosion
  • Check relevant fuses and relays for the suspension/actuator circuit
  • Perform wiggle test on harness and connector while monitoring live data or watching for intermittent faults
  • Measure continuity and resistance between actuator connector and suspension control module pins with connectors disconnected

Signal parameters

  • Actuator supply voltage (nominal ~12 V)
  • Actuator ground continuity (ohms to chassis ground)
  • Actuator coil/resistance (ohms)
  • Actuator command signal (percentage, counts or PWM duty as reported by module)
  • Actuator feedback/position sensor value (volts or counts)
  • Actuator current draw (amps) when commanded

Diagnostic algorithm

  1. Connect a professional scan tool; record all suspension-related DTCs and freeze frame data.
  2. Verify vehicle is on level surface and safe to work on. Disable any automatic raising systems per service manual before disconnecting components.
  3. Visually inspect LF damper connector and wiring for damage, corrosion, pin push-out or water intrusion; repair or reseal as needed.
  4. Check and verify relevant fuses/relays for the suspension system; replace if blown.
  5. With connector attached, monitor live data while commanding the LF damper (if tool allows). Note if command is sent and whether feedback/position or current changes.
  6. If no response, turn ignition OFF and disconnect the actuator connector. Measure continuity/resistance between actuator connector pins and the suspension control module connector pins. Compare to service spec; an open or infinite reading indicates a wiring open — trace and repair.
  7. With ignition ON and connector disconnected, verify supply voltage and ground at the actuator connector when the system is commanded. If no power or ground, inspect upstream wiring, fuses, relays and module outputs.
  8. If wiring and power/ground are good, bench-test the actuator with proper test voltage per service manual. If actuator does not operate or has open resistance, replace actuator.
  9. After repair or replacement, clear codes, cycle ignition and re-test actuator operation through scan tool. Perform a road or static operational test to confirm proper function and verify the code does not return.
  10. If wiring and actuator test good but code remains, suspect the suspension control module output or internal fault; consult service manual for module tests, update software, or consider module replacement following further diagnostics.

Likely causes

  • Open or broken conductor in harness to left front damper
  • Seized/corroded actuator connector pins or water intrusion at connector
  • Failed actuator motor or position sensor (internal open)
  • Blown fuse feeding actuator power
  • Detached or corroded ground at chassis or module

Fault status

⚠️ Status
Left Front Damper Actuator Open Circuit — service suspension system
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5 - 3.0 hours

Similar codes

C1710 C1711 C1713 C1720 C1722
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Years: 2008–2019 Manual in English Pages: 128 11.1 MB
Short description

Service manual for the 7‑Speed dual‑clutch (DSG) transmissions 0CJ/0CL/0CK/0DN/0DP/0HL fitted to various Audi models. Includes repair information, clutch and gearbox disassembly/assembly, mechatronic and hydraulic system procedures, seals and differential work. Edition 05.2018.

199,00 UAH
Contents
Key sections:
  • 00 - General, Technical Data
  • 1 Repair Information
  • 1.1 General Repair Information
  • 1.2 Contact Corrosion
  • 1.3 ATF Pump, Deactivating and Draining the Hydraulic Pump Reservoir
  • 2 Rules for Cleanliness when Working on DSG® Transmission
  • 30 - Clutch
  • 1 Clutch
  • 1.1 Overview - Flywheel and Dual Clutch
  • 1.2 Flywheel, Removing and Installing
  • 1.3 Dual Clutch, Removing and Installing
  • 1.4 Input Shaft Seal, Replacing
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LAND ROVER 3

Land Rover Defender 300Tdi — Workshop Manual (1996 model year)

Workshop Manual
Defender 300Tdi Years: 1996 Manual in English 7.5 MB
Short description

Official workshop manual for the Land Rover Defender 300Tdi (from 1996 model year). Contains specifications, adjustment, fault diagnosis and step-by-step repair and overhaul procedures for engine, transmission, axles, suspension, brakes, electrical and body. Intended for dealer workshops and trained technicians.

199,00 UAH
Contents
Key sections:
  • 01 INTRODUCTION
  • 04 GENERAL SPECIFICATION DATA
  • 05 ENGINE TUNING DATA
  • 07 GENERAL FITTING REMINDERS
  • 09 LUBRICANTS, FLUIDS AND CAPACITIES
  • 10 MAINTENANCE
  • 12 ENGINE Tdi
  • - Description and operation
  • - Fault diagnosis
  • - Adjustment
  • - Repair and overhaul procedures
  • 19 FUEL SYSTEM Tdi
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Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)

Workshop Manual
Defender Years: 1999–2002 Manual in English 7.6 MB
Short description

Workshop Manual Supplement and Body Repair Manual for the Land Rover Defender. Includes general specifications, maintenance schedules, tuning data and step‑by‑step repair procedures for engine, transmission, suspension, brakes, electrical and body repairs. Covers Defender models from 1999 and 2002 model years.

199,00 UAH
Contents
Key sections:
  • 01 - INTRODUCTION
  • - Introduction
  • - Dimensions
  • - References
  • - Repairs and replacements
  • - Poisonous substances
  • - Fuel handling precautions
  • - Synthetic rubber
  • - Recommended sealants
  • - Used engine oil precautions
  • - Accessories and conversions
  • - Wheels and tyres
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Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)

Workshop Manual
Manual in English Pages: 494 7.1 MB
Short description

Land Rover Range Rover Electrical Library (LRL 0453ENG). Comprehensive manual covering fuse details, earth points, system descriptions, diagnostics and connector pin-outs for electrical troubleshooting and repair. Intended for technicians and service workshops.

199,00 UAH
Contents
Key sections:
  • 1 INTRODUCTION
  • 1.1 About this document
  • 1.2 Battery voltage
  • 1.3 Electrical precautions
  • 1.4 Battery disconnecting / charging
  • 1.5 Disciplines / greases
  • 1.6 Abbreviations
  • 1.7 HeVAC, sensors abbreviations
  • 1.8 How to use this document
  • 1.9 Connector detail format
  • 1.10 Fault diagnosis
  • 1.11 Wire colour codes
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