E-B

Active Damper System DTC Troubleshooting: E-B

DTC E-B:

Active Damper Control Unit Power Supply Circuit Malfunction

NOTE: Make sure the battery is fully charged and in good condition Battery Test, and check the charging system Alternator and Regulator Circuit Troubleshooting.

1. Press the engine start/stop button to select the ON mode.

2. Clear the DTC with the HDS.

3. Press the engine start/stop button to select the OFF mode.

4. Start the engine, and raise the engine speed to 2,000 rpm.

5. Check for DTCs with the HDS.

Is DTC E-B indicated?

YES -

Go to step 6.

NO -

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

6. Press the engine start/stop button to select the OFF mode.

7. Start the engine, and raise the engine speed to 2,000 rpm.

8. Check and note IG1 VOLTAGE in the ACTIVE DAMPER SYSTEM DATA LIST with the HDS within 40 seconds after starting the engine.

Was there 9.3-17.5 V for 30 seconds continuously?

YES -

Replace the active damper control unit Service and Repair.

NO -

Go to step 9.

9. With engine idle speed, wait 40 seconds.

10. Raise the engine speed to 2,000 rpm.

11. Measure the voltage between active damper control unit connector A (20P) terminals No. 8 and No. 18.





Is there 9.3 V or more?

YES -

Replace the active damper control unit Service and Repair.

NO -

Repair poor connection between driver's under-dash fuse/relay box and active damper control unit, or poor ground at G203 and G604, and recheck. If DTCs are still present, replace the active damper control unit Service and Repair, and recheck.