DTC Troubleshooting: B1168
DTC B1168:
 Gauge Control Module Lost Communication with the ECM (ENG 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 B1168 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.■
  1. Check for Fuel and Emission system DTCs with the HDS.
Is any DTCs indicated?
YES -
Go to the indicated DTCs, then recheck.
NO -
Go to Step 6 .
  1. Turn the ignition switch OFF.
  1. Disconnect the gauge control module (tach) 36P connector.
  1. Jump the SCS with the HDS.
  1. Disconnect the ECM connector No. 2 (58P).
  1. Connect the gauge control module (tach) 36P connector No. 1 and No. 19 terminals and body ground with jumper wires.