What Does C1782 Mean?
The Intelligent Continuously Controlled Suspension (ICCS2) driver-side left damper output circuit has a short to battery voltage. This means the suspension control module is detecting excessive voltage on the wire that commands the left-front or left-side damper solenoid. The adaptive suspension will likely revert to a fixed firm or soft setting, and the driver may notice degraded ride quality and a suspension warning light.
Common Causes
35%
Chafed or pinched wiring harness shorting damper control wire to a power source
30%
Faulty left damper solenoid with internal short to supply voltage
20%
Water intrusion or corrosion in the damper solenoid connector causing voltage leak
10%
Suspension control module output driver failure
5%
Harness routing contacting positive battery cable or power distribution wire
Diagnostic Steps
1
Disconnect the left damper solenoid connector and measure voltage on the module-side harness pin with key on — should read the module's commanded voltage (0-12V depending on mode), not a constant battery voltage. Constant 12V+ indicates a short to B+ in the harness.
2
With the solenoid disconnected, measure resistance of the solenoid coil — typical spec is 3-8 ohms. Also check for shorts to the solenoid housing/ground and to the power pin.
3
Inspect the wiring harness from the suspension module to the left damper, paying close attention to areas near the shock tower, suspension travel zone, and any areas where the harness crosses other wiring bundles.
4
Check the damper solenoid connector for green corrosion, moisture, or bent pins — clean or replace the connector as needed.
5
If the harness and solenoid test good, command the damper through its range using bidirectional scan tool controls while monitoring current draw — should vary smoothly as damping force changes.
Estimated Repair Cost
$200 - $900
Parts + labor, varies by vehicle and location
The Intelligent Continuously Controlled Suspension (ICCS2) driver-side left damper output circuit has a short to battery voltage. This means the suspension control module is detecting excessive voltage on the wire that commands the left-front or left-side damper solenoid. The adaptive suspension wil...
The most common cause of C1782 (ICCS2 DL Left Output Short Circuit to Bat) is: Chafed or pinched wiring harness shorting damper control wire to a power source
Typical repair costs for C1782 range from $200 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle can be driven, but the adaptive suspension will not function on the affected corner. Ride quality will be degraded, and handling may be unbalanced, particularly during aggressive cornering or on rough roads. Drive moderately and avoid high-speed maneuvers until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1782 to identify the root cause.
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Quick Info
Category
Chassis
System
Active / Adaptive Suspension
Difficulty
Type
Manufacturer
Recommended Tools
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