C1784: OBD-II code C1784 flags the ICCS2 damper right output shorted to battery voltage — the right-side damper drive circuit is held permanently energised.

Symptoms

• The 'Service Ride Control' warning is displayed and the ICCS2 module disables adaptive damping.
• Ride quality on the right side may feel harshly stiff because the damper is held at maximum current.
• Multiple ICCS2 codes may set together because the module cannot control any of its outputs while one is shorted.

Common causes

• A chafed right-output damper drive wire touching a battery-voltage source — a common failure near suspension pivot points.
• An internally shorted damper actuator pulling the drive line high.
• A failed ICCS2 output driver stuck in the on state, keeping the drive line at battery voltage.

What to do?

Disconnect the right damper actuator and verify no B+ on the drive wire with the connector unplugged. Measure the actuator coil resistance. Repair chafed wiring or replace the actuator. If wiring and actuator are good, the ICCS2 module has a failed output driver and needs replacement.