DTC Troubleshooting: B1170
DTC B1170:
 Gauge Control Module (Tach) Lost Communication with VSA Modulator-control Unit (VSA 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 B1170 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure. The gauge control module (tach) is OK at this time.■
  1. Check for VSA system DTCs with the HDS.
Is any DTCs indicated?
YES -
Go to the indicated troubleshooting.■
NO -
Go to Step 6 .
  1. Turn the ignition switch OFF.
  1. Disconnect the gauge control module (tach) 36P connector.
  1. Disconnect the VSA modulator-control unit 46P connector.
  1. Connect the gauge control module (tach) 36P connector No. 1 and No. 19 terminals and body ground with jumper wires.