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
   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 B1192 and/or B1193 indicated?

   YES: B1193 indicated

   Go to step 2.

   YES: B1192 and B1193 indicated

   Go to step 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. B43

   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. B43 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 STRG GND wire is OK. Go to step 5.

   NO 

   Repair an open or high resistance in the ground wire or poor ground (G502).

5. Open wire check (LIN (BATT SNSR)/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 

   LIN (BATT SNSR)/STRG SW LIN wire is OK. Replace the audio remote-HFL switch .

   NO 

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

6. Shorted wire check (LIN (BATT SNSR)/STRG SW LIN line)

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

   -2. Disconnect the following connectors.

   Gauge control module connector A (32P) Audio remote-HFL switch 12P connector 12 volt battery sensor 3P connector

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

   Test condition	Vehicle OFF (LOCK) mode Audio remote-HFL switch 12P connector: disconnected Gauge control module connector A (32P): disconnected 12 volt battery sensor 3P connector: disconnected
   Test point 1	Audio remote-HFL switch 12P connector No. 10
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the LIN (BATT SNSR)/STRG SW LIN wire.

   NO 

   The LIN (BATT SNSR)/STRG SW LIN wire is not shorted. Go to step 7.

7. Open wire check (LIN (BATT SNSR)/STRG SW LIN line)

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

   Test condition	Vehicle OFF (LOCK) mode Audio remote-HFL switch 12P connector: disconnected Gauge control module connector A (32P): disconnected 12 volt battery sensor 3P 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 

   LIN (BATT SNSR)/STRG SW LIN wire is OK. Replace the gauge control module .

   NO 

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