The C2206 diagnostic trouble code (DTC) indicates a vehicle configuration mismatch detected by the Anti-Lock Brake Module (ABM). This error typically arises when the ABM receives a missing or incorrect signal from the gateway module regarding vehicle characteristics. This guide provides a comprehensive overview of the C2206 code, its potential causes, and diagnostic procedures.
Understanding the C2206 DTC
The C2206 DTC sets when the ABM identifies a discrepancy between the expected and received vehicle configuration data. This mismatch can stem from various issues, including incorrect module configuration or a faulty ABM. The error is monitored continuously with the ignition on. If the mismatch persists for a duration exceeding the predefined fault threshold, the C2206 code is triggered. For a complete wiring diagram, consult Section 8W of your vehicle’s service manual.
Diagnosing the C2206 Fault
Troubleshooting the C2206 code involves a systematic approach to identify the root cause. Here’s a step-by-step diagnostic procedure:
1. Verify the C2206 DTC
(Note: This DTC must be active for accurate diagnosis. The DTC will also be active after a new module installation until initialization is completed.)
- Turn the ignition on.
- Using a scan tool, read and record all DTCs and Freeze Frame data.
- Clear the DTCs using the scan tool.
- Perform an ECU initialization with a drive test on the ABM (Refer to ABS Verification Test in Section 5 – Brakes – Standard Procedure).
- Cycle the ignition off and then back on.
- Read and record any DTCs with the scan tool.
If the C2206 DTC reappears: Proceed to the next diagnostic step.
If the C2206 DTC does not reappear: Perform the ABS Intermittent Condition diagnostic procedure (Refer to ABS-Intermittent Condition Test in Section 5 – Brakes – Diagnosis and Testing).
2. Confirm TIPM/PCM Configuration
- Turn the ignition on.
- Verify the following parameters in the TIPM/PCM:
- Engine Displacement (PCM)
- Drivetrain Configuration (XWD 4×2, 4×4, All-Wheel Drive) (TIPM)
- Axle Ratio (TIPM)
- Vehicle Line (TIPM)
- Brake Type (0=ABS, 1=ESP) (TIPM)
(Note: A new controller installation will trigger the DTC until initialization is performed.)
If the TIPM/PCM configuration is correct: Replace the Anti-Lock Brake Module according to the Service Information and perform the ABS Verification Test (Refer to Section 5 – Brakes – Standard Procedure).
If the TIPM/PCM configuration is incorrect: Reprogram the appropriate module and perform the ABS or PCM Verification Test (Refer to Section 5 – Brakes – Standard Procedure).
Possible Causes of C2206
The C2206 DTC can be attributed to several potential causes:
- Incorrect TIPM/PCM Configuration: This is a common cause and often requires reprogramming.
- Faulty Anti-Lock Brake Module: A malfunctioning ABM may require replacement.
Conclusion
Addressing the C2206 Vehicle Configuration Mismatch requires a thorough diagnostic process. By following the outlined steps and verifying the configuration settings, you can effectively pinpoint the source of the problem and implement the appropriate solution. Always refer to your vehicle’s specific service information for detailed procedures and safety precautions. Addressing this issue promptly ensures the proper functioning of your vehicle’s braking system.
