C111F

Code

Generic C — Chassis

Chassis Control Module Internal Fault (C111F)

Brand: Generic

Type: C — Chassis

Views: UK: 6 EN: 6 RU: 5

AI status

Completed

ready

Completed 100%

Page language: EN

Malfunction indicator lamp or chassis warning on dash
Loss or degraded operation of chassis-related functions (e.g., ABS, traction control, stability assist, electronic suspension) depending on vehicle
Intermittent or permanent faults in systems controlled by CCM
Other modules reporting communication timeouts or related DTCs
Vehicle may go into limp/safe mode for affected systems

Read and record all stored DTCs and freeze-frame data with a capable scan tool
Verify battery voltage and charging system (measure with engine off and running)
Inspect CCM connector for corrosion, bent pins, or water intrusion
Check ground continuity from CCM ground to chassis
Check CAN/LIN bus wiring for continuity, shorts to power or ground, and proper termination
Verify other modules' communication with the same scan tool (CAN bus presence)

Battery voltage at CCM power pin (expected near battery voltage, e.g., 12–14.5 V depending on engine state)
Ignition/switched supply presence when key on
Ground resistance/continuity at CCM ground
CAN bus differential voltages (approx. CAN_H ~2.5–3.5 V, CAN_L ~1.5–1.0 V depending on idle state) and message traffic
Module internal status/uptime and software/firmware ID (as reported by scan tool)
Error counters or bus error rates reported by diagnostics

Capture all stored codes and live data from CCM and related modules; note freeze-frame and event logs.
Verify battery voltage (12.4–12.8 V resting; >13.5 V charging) and ensure stable supply during testing; charge or replace battery if low.
Visually inspect CCM connectors and harness for damage, corrosion, water ingress, or pin damage; repair as needed.
Check continuity and low resistance of CCM ground(s) to vehicle chassis; clean and tighten ground connections.
With a diagnostic tool, verify CAN/LIN communication to the CCM. Check for bus errors, missing messages, or lack of node presence. Measure bus voltages and termination.
Perform a wiggle test on harness/connectors while monitoring live data and DTCs to try to reproduce intermittent failures.
If power/ground and bus are good, verify CCM software/firmware version. Compare to factory release; if corrupted or out-of-date, consider reflash using manufacturer procedures.
If module is confirmed faulty after above checks, follow manufacturer procedure for module replacement and programming. Replace only after wiring and bus integrity are confirmed.
After repair or reflash, clear codes and perform road/functional test to confirm fault does not return. Re-scan for related DTCs.