Active Damping Control Module (ADCM)

C212A-84-SYSTEM VOLTAGE-SIGNAL BELOW ALLOWABLE RANGE

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
Continuously with the ignition on.

- Set Condition:
The Active Damping Control Module (ADCM) receives a low charging system voltage message over the CAN Bus or detects voltage under 10 volts on the Fused B(+) circuit.





1. CHECK PCM FOR CHARGING SYSTEM DTC
1. With the scan tool, read the PCM DTCs.

Are there any Charging System DTCs set in the PCM?

Yes

- Perform the Charging System diagnostic procedure. Testing and Inspection.

No

- Go To 2

2. VERIFY THE DTC IS ACTIVE
1. With the scan tool, read the active ADCM DTCs.

Is the DTC active at this time?

Yes

- Go To 3

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test

3. CHECK THE VOLTAGE AT THE (A206) FUSED B(+) CIRCUIT
1. Disconnect the ADCM C2 harness connector.
2. Turn the ignition on.
3. Measure the voltage between the (A206) Fused B(+) circuit and ground. Compare this value to the voltage measured at the vehicle battery.

Is the voltage measured at the ADCM C2 harness connector the same as measured at the battery?

Yes

- Replace the Active Damping Control Module (ADCM). Active Damping Control Module - Removal.
- Perform the ADCM VERIFICATION TEST. Active Damping Control Module (ADCM) Verification Test.

No

- Repair the (A206) Fused B(+) circuit as necessary.
- Perform the ADCM VERIFICATION TEST. Active Damping Control Module (ADCM) Verification Test.