DTC Troubleshooting: B1157
DTC B1157:
 Gauge Control Module (Tach) Lost Communication with MICU (MICU Message)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch OFF, and then back ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1157 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the gauge control module (tach) is OK at this time. Check for loose or poor connections between the gauge control module (tach) and the MICU.■
  1. Check for DTCs with the HDS.
Are DTCs B1157 and B1905 indicated?
YES -
NO -