( TF09E8FK738000Y2455FAAT00 )
DTC Troubleshooting: B2455
DTC B2455:
 Auto Leveling Unit Lost Communication with Gauge Control Module
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0) and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B2455 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections between the gauge control module and the headlight leveling control unit.■
  1. Check for DTCs with the HDS.
Is DTC B1011 also indicated with DTC B2455?
YES -
Go to Step 6 .
NO -
  1. Connect the HDS to the data link connector, then turn the ignition switch to ON (II).
  1. From the BODY ELECTRICAL system menu, select UNIT INFORMATION, and then select CONNECTED UNIT.
Is the gauge control module detected?
YES -
NO -
Go to Step 8 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the gauge control module 32P connector.
  1. Turn the ignition switch to ON (II).
  1. Measure the voltage between the gauge control module 32P connector No. 16 and No. 32 terminals and body ground respectively.
Is there battery voltage?
YES -
Go to Step 12 .
NO -
Check the No. 1 (10 A) fuse and No. 22 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is blown, replace the fuse and recheck the DTCs. If the fuses are OK, repair and open in the wire between the under-dash fuse/relay box and the gauge control module.■
  1. Turn the ignition switch to LOCK (0).
  1. Check for continuity between the gauge control module 32P connector No. 13 and No. 17 terminals and body ground respectively.
Is there continuity?
YES -
Go to Step 14 .
NO -
Repair an open in the wire or poor ground (G501).■
  1. Disconnect the under-dash fuse/relay box connector Q (16P).
  1. Check for continuity between the under-dash fuse/relay box connector Q (16P) No. 3 terminal and the gauge control module 32P connector No. 18 terminal.
Is there continuity?
YES -
NO -
Repair an open in the wire.■