No Response From ADCM (Active Damping Control Module)

NO RESPONSE FROM ADCM (ACTIVE DAMPING CONTROL MODULE)

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





Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

NOTE: Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.

1. Turn the ignition on.

NOTE: Make sure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.

2. With the scan tool, read the module status.

NOTE: Check the TIPM for any active CAN hardware DTCs, perform DTC before proceeding.

Does the scan tool indicate that the module is active on the bus?

Yes
- The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched and partially broken wires and the wiring harness connectors for broken, bent, pushed out and corroded terminals.

No
- Go To 2

2. CHECK THE (A914) FUSED B(+) CIRCUIT FOR AN OPEN OR SHORT
1. Turn the ignition off.
2. Disconnect the Active Damping Control Module C2 harness connector.
3. Using a 12-volt test light connected to ground, check the (A914) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes
- Go To 3

No
- Repair the (A914) Fused B(+) circuit for an open or short.
- Perform the ADCM VERIFICATION TEST. .

3. CHECK THE (Z914) GROUND CIRCUIT FOR AN OPEN
1. Using a 12-volt test light connected to 12-volts, check the (Z914) Ground circuit.

Does the test light illuminate brightly?

Yes
- Go To 4

No
- Repair the (Z914) Ground circuit for an open.
- Perform the ADCM VERIFICATION TEST. .

4. CHECK THE (F930) FUSED RUN RELAY OUTPUT CIRCUIT FOR AN OPEN OR SHORT
1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the (F930) Fused Run Relay Output circuit.

Does the test light illuminate brightly?

Yes
- Go To 5

No
- Repair the (F930) Fused Run Relay Output circuit for an open or short.
- Perform the ADCM VERIFICATION TEST. .

5. CHECK THE (D64) AND (D65) CAN C BUS CIRCUITS FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the TIPM C6 harness connector.
3. Disconnect the Active Damping Control Module C1 harness connector.
4. Measure the resistance of the (D64) CAN C Bus (-) circuit between the TIPM C6 harness connector and the Active Damping Control Module C1 harness connector.
5. Measure the resistance of the (D65) CAN C Bus (+) circuit between the TIPM C6 harness connector and the Active Damping Control Module C1 harness connector.

Are the resistances below 5.0 Ohms?

Yes
- Replace the Active Damping Control Module (ADCM). .
- Perform the ADCM VERIFICATION TEST. .

No
- Repair the open in the (D64) or (D65) CAN C Bus circuit. Inspect the connector for damage.
- Perform the ADCM VERIFICATION TEST. .