DTC Troubleshooting: B1011

DTC B1011:  MICU Lost Communication with Gauge Control Module (VSP/NE Message)


1.Clear the DTCs with the HDS.

2.Turn the ignition switch OFF, and then back ON (II).

3.Wait for 6 seconds or more.

4.Check for DTCs with the HDS.

Is DTC B1011 indicated?


YES - Go to 5.


NO - Intermittent failure, the gauge control module (tach) is OK at this time.n


5.Check for DTCs with the HDS.

Are DTCs B1000, B1008, B1011, and B1032 also indicated?


YES - Go to DTC troubleshooting B1000.n


NO - Go to 6.


6.Select the BODY ELECTRICAL SYSTEM SELECT MENU, then enter the UNIT INFORMATION MENU.

7.Check the condition of the gauge control module from the CONNECTED UNIT.

Is NOT AVAILABLE indicated?


YES - Go to 8.


NO - Faulty MICU, replace the under-dash fuse/relay box.n

8.Do the gauge control module input test, and check power supply and ground for the gauge control module.

Do all of the input tests prove OK?


YES - Go to 9.


NO - If any input tests indicate a problem, find and correct them, then recheck the system.n


9.Turn the ignition switch OFF.

10.Disconnect the under-dash fuse/relay box connector Q (16P).

11.Disconnect the gauge control module (tach) 36P connector.

12.Check for continuity between the under-dash fuse/relay box connector Q (16P) No. 6 terminal and the gauge control module (tach) 36P connector No. 21 terminal.

 

Is there continuity?


YES - Replace the gauge control module (tach).n


NO - An open in the wire between the MICU and the gauge control module (tach).n