DTC: C1640-92, C1641-92, C1642-92, C1643-92

DTC C1640-92  : Left Front Damper Solenoid Current Characteristic Abnormality DTC C1641-92  : Right Front Damper Solenoid Current Characteristic Abnormality DTC C1642-92  : Left Rear Damper Solenoid Current Characteristic Abnormality DTC C1643-92  : Right Rear Damper Solenoid Current Characteristic Abnormality

NOTE: 

• Before you troubleshoot, review the general troubleshooting information .
• When the solenoid coil temperature rises during circuit driving or sporty driving, the DTC might be stored. That time, do not replace parts, because it is not a malfunction.

DTC (Adaptive Damper System)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.

   -4. Wait for 10 seconds or more.

   -5. Check for DTCs with the HDS.

   DTC Description	DTC
   C1640-92 Left Front Damper Solenoid Current Characteristic Abnormality
   C1641-92 Right Front Damper Solenoid Current Characteristic Abnormality
   C1642-92 Left Rear Damper Solenoid Current Characteristic Abnormality
   C1643-92 Right Rear Damper Solenoid Current Characteristic Abnormality

   Is DTC C1640-92, C1641-92, C1642-92 or C1643-92 indicated?

   YES 

   The failure is duplicated. Go to step 2.

   NO 

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .

2. Connector check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Check for loose terminals and poor connections in the following connectors.

   Adaptive damper control unit 24P connector

   Appropriate damper actuator 2P connector

   Is the connector OK?

   YES 

   Go to step 3.

   NO 

   Repair loose terminals or poor connections. Then clear the DTC by using the HDS and recheck DTC C1640-92, C1641- 92, C1642-92, and C1643-92. If DTC C1640-92, C1641-92, C1642-92, and C1643-92 is not confirmed, troubleshooting is complete.

3. Adaptive damper actuator internal resistance check

   -1. Disconnect the following connector.

   Appropriate damper actuator 2P connector

   -2. On the actuator side, measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Appropriate damper actuator 2P connector: disconnected
   Test point 1	Appropriate damper actuator 2P connector (male terminals) No. 1:
   Test point 2	Appropriate damper actuator 2P connector (male terminals) No. 2:

   Courtesy of HONDA, U.S.A., INC.

   Is the resistance between 1.58-3.36 ohms?

   YES 

   Check for loose terminals and poor connections in the adaptive damper control unit 24P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the adaptive damper control unit .

   NO 

   Replace the appropriate damper unit.

   • Front
   • Rear