C1003

Code

LAND ROVER C — Chassis

power frame - right arrangement

Brand: LAND ROVER

Type: C — Chassis

Views: UK: 11 EN: 18 RU: 15

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or short in the right power frame wiring harness
Poor connector contact (corrosion, bent pins, water ingress)
Blown fuse or insufficient battery supply voltage
Failed right power-frame actuator motor or internal gearbox
Faulty position/angle sensor inside the power frame
Control module or CAN/LIN communication error

Symptoms

Warning light or message on instrument cluster referencing suspension/seat/convertible/seat frame (depending on vehicle system)
Right-side frame/actuator does not move or moves slowly
Uneven operation between left and right power frames
Unusual noise (grinding, clicking) from the right frame area during operation
Reduced function or limp mode for the associated system
Relevant CAN/LIN error messages or other DTCs present

What to check

Read freeze-frame data and all stored codes from all modules; note any related body or CAN codes
Visually inspect wiring harness and connectors at the right power frame for damage, corrosion or water ingress
Check main and secondary fuses and relays powering the frame/actuator
Measure battery voltage at the vehicle and at the actuator connector during operation
Check ground continuity from actuator ground to chassis/battery negative
Use a diagnostic tool to monitor live data: position sensor, motor current, supply voltage and communication status

Signal parameters

Supply voltage at actuator connector: nominal ~12 V (should remain stable during operation)
Ground continuity: low resistance to chassis/battery negative
Actuator current draw: should rise when commanding movement — abnormally high current indicates binding/short, near zero can indicate open circuit or failed motor
Position/angle sensor output: voltage or counts within expected range and changes when commanded
PWM duty cycle or control line: 0–100% when commanded (if applicable)
CAN/LIN message presence and error counters for the associated module

Diagnostic algorithm

Retrieve and record DTCs and freeze-frame data from all modules. Note any related codes (electrical, CAN, body control).
Verify vehicle battery state-of-charge and health. Ensure battery is fully charged and connections are clean/tight.
Perform a visual inspection of the right power frame, harness, and connectors. Look for chafing, broken wires, corrosion or water entry.
Check fuses and relays powering the frame/actuator; replace any blown components and retest.
With ignition on, measure supply voltage at the actuator connector and monitor while attempting to operate the frame. Record voltage drop under load.
Check ground continuity from the actuator ground terminal to chassis/battery negative; repair any high-resistance grounds.
Use a scan tool to command the right power frame actuator and observe live data: position feedback, motor current, and any fault codes generated during the command.
If actuator does not respond electrically but has proper supply and ground, isolate and bench-test the actuator (where safe and practical) or measure motor resistance for open/short.
If motor draws excessive current or makes abnormal noises, inspect/replace the actuator assembly and any seized linkages or mechanical components.
If electrical measurements and actuator bench test are correct, inspect communication bus (CAN/LIN) for errors; check wiring and address faults with the control module if necessary.
After repair or parts replacement, clear DTCs, perform any required calibration or module programming, and verify operation through several cycles to ensure code does not return.

Likely causes

Damaged connector at the right power frame (moisture or corrosion)
Actuator motor drawing excessive current due to internal failure or binding
Intermittent battery/ground connection causing voltage drop during operation
Faulty position sensor providing out-of-range feedback to module

Fault status

⚠️ Status

Right power frame fault detected — actuator/circuit failure or communication error. Function may be limited until fault is addressed.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours

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C1003 — power frame - right arrangement