DTC U0199: MICU Lost Communication With Door Multiplex Control Unit
WARNING: This page is about a different car, the 2011 Honda Pilot, 2010 Honda Pilot, and 2009 Honda Pilot. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If you are troubleshooting multiple DTCs, be sure to follow instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Clear the DTCs with the HDS.
- Turn the ignition switch to LOCK (0) and then back to ON (II).
- Wait for 6 seconds or more.
- Check for DTCs with the HDS.
Is DTC U0199 indicated?
YES - Go to step 5.
NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections. ■
- Check for DTCs with the HDS.
Is DTC U1280 indicated?
YES - Go to the DTC U1280 troubleshooting. ■
NO - Go to step 6.
- Turn the ignition switch to LOCK (0).
- Disconnect the power window master switch 37P connector.
- Disconnect under-dash fuse/relay box connector T (34P).
- Check for continuity between power window master switch 37P connector terminals No. 33 and No. 35 and under-dash fuse/relay box connector T (34P) terminals No. 29 and No. 12 individually.
Is there continuity?
YES - Go to the power window master switch input test, and do all power and ground input tests (see POWER WINDOW MASTER SWITCH INPUT TEST ). If the tests prove OK, replace the power window master switch (see REAR POWER WINDOW SWITCH TEST/REPLACEMENT ). ■
NO - Repair an open or high resistance in the wire. ■