DTC B1193: Gauge Control Module Lost Communication With Steering Switch (LIN BUS Connected)

NOTE:  If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A - Refer to: Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2015-17), or Body Electrical Troubleshooting - B-CAN System Diagnosis Test Mode A - Initial Communication and DTC Checks (2018-19) .

DTC (Gauge Control Module)

1. Problem verification

   -1. Clear the DTCs with the HDS.

   - 2. Turn the vehicle to the OFF (LOCK) mode and then the ON mode.

   - 3. Wait for at least 4 seconds.

   - 4. Check for DTCs with the HDS.

   DTC Description	DTC
   B1192 Gauge Control Module Lost Communication With Battery Sensor ECU (LIN BUS Connected)
   B1193 Gauge Control Module Lost Communication With Steering Switch (LIN BUS Connected)

   Is DTC B1193 indicated?

   YES 

   Go to step 2.

   YES 

   Go to step 6. Refer to:  6

   NO 

   Intermittent failure, the system is OK at this time. Check for loose or poor connections.

2. Fuse check

   -1. Check the following fuse.

   Fuse	No. A29 (10 A)
   Location	Under-hood fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 3.

   NO 

   Replace the fuse. If the fuse blows again, repair a short to ground in the No. A29 (10 A) fuse circuit.

3. Open wire check (+B BACK UP line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connector.

   Steering commander switch assembly connector B (16P)

   - 3. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Steering commander switch assembly connector B (16P): disconnected
   Test point 1	Steering commander switch assembly connector B (16P) No. 16
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there battery voltage?

   YES 

   The +B BACK UP wire is OK. Go to step 4.

   NO 

   Repair an open or high resistance in the wire.

4. Open wire check (GND line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Steering commander switch assembly connector B (16P): disconnected
   Test point 1	Steering commander switch assembly connector B (16P) No. 1
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 5.

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G305).

5. Open wire check (LIN (BATT SENSOR)/LIN line)

   -1. Disconnect the following connector.

   Gauge control module 32P connector

   - 2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Gauge control module 32P connector: disconnected Steering commander switch assembly connector B (16P): disconnected
   Test point 1	Gauge control module 32P connector No. 24 - Refer to: Gauge Control Module Input Test (2015-17), or Gauge Control Module Input Test (2018-19)
   Test point 2	Steering commander switch assembly connector B (16P) No. 14

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Replace the steering commander switch assembly .

   NO 

   An open or poor connection in the LIN (BATT SENSOR)/LIN wire between the gauge control module and the steering commander switch assembly.

6. Shorted wire check (LIN (BATT SENSOR)/LIN (METER) line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Disconnect the following connectors.

   Steering commander switch assembly connector B (16P) Gauge control module 32P connector 12 volt battery sensor 2P connector

   - 3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Steering commander switch assembly connector B (16P): disconnected Gauge control module 32P connector: disconnected 12 volt battery sensor 2P connector: disconnected
   Test point 1	Steering commander switch assembly connector B (16P) No. 14
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short to ground in the LIN (BATT SENSOR)/LIN (METER) wire between the gauge control module and the steering commander switch assembly.

   NO 

   The LIN (BATT SENSOR)/LIN (METER) wire is not shorted. Go to step 7.

7. Open wire check (LIN (BATT SENSOR)/LIN (METER) line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode Steering commander switch assembly connector B (16P): disconnected Gauge control module 32P connector: disconnected 12 volt battery sensor 2P connector: disconnected
   Test point 1	Gauge control module 32P connector No. 24 - Refer to: Gauge Control Module Input Test (2015-17), or Gauge Control Module Input Test (2018-19)
   Test point 2	Steering commander switch assembly connector B (16P) No. 14

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Replace the gauge control module .

   NO 

   An open or poor connection in the LIN (BATT SENSOR)/LIN (METER) wire between the gauge control module and the steering commander switch assembly.