DTC B1193

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 .

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
   B1193-00 Gauge control module lost communication with Steering Switch (LIN bus connected)

   Is DTC B1193 indicated?

   YES 

   Go to step 2.

   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. C30

   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. C30 fuse circuit.

3. Open wire check (+B line)

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

   -2. Disconnect the following connector.

   Audio remote-HFL switch 12P connector

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

   Test condition	Vehicle OFF (LOCK) mode Audio remote-HFL switch 12P connector: disconnected
   Test point 1	Audio remote-HFL switch 12P connector No. 12
   Test point 2	Body ground

   Is there battery voltage?

   YES 

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

   NO 

   Repair an open or high resistance in the wire.

4. Open wire check (STRG GND line)

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

   Test condition	Vehicle OFF (LOCK) mode Audio remote-HFL switch 12P connector: disconnected
   Test point 1	Audio remote-HFL switch 12P connector No. 7
   Test point 2	Body ground

   Is there continuity?

   YES 

   The GND wire is OK. Go to step 5.

   NO 

   Repair an open or high resistance in the STRG GND wire or poor ground (G403).

5. Open wire check (LIN (START SW)/STRG SW LIN line)

   -1. Disconnect the following connector.

   Gauge control module connector A (32P)

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

   Test condition	Vehicle OFF (LOCK) mode Gauge control module connector A (32P): disconnected Audio remote-HFL switch 12P connector: disconnected
   Test point 1	Gauge control module connector A (32P) No. 4
   Test point 2	Audio remote-HFL switch 12P connector No. 10

   Is there continuity?

   YES 

   Replace the audio remote-HFL switch .

   NO 

   An open or poor connection in the LIN (START SW)/STRG SW LIN wire.