VSA DTC Troubleshooting: 86-14
DTC 86-14: F-CAN Communication With Gauge Control Module Malfunction
NOTE:

DTC Description
DTC
Freeze Frame
86-14 F-CAN Communication With Gauge Control Module Malfunction
    

1.
DTC check:

DTC check
?1.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
86-11 F-CAN Bus-Off Malfunction
    
86-14 F-CAN Communication With Gauge Control Module Malfunction
    

Is DTC 86-14 indicated?

     
YES
     
     
     
If only DTC 86-14 is indicated, go to step 2.
     
YES
     
     
     
If DTC 86-11 is also indicated, go to DTC 86-11.?
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.?
2.
Gauge control module check:

Gauge control module check
?1.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

Do the each indicators come on then go off?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
3.
Open wire check (F CAN-L, F CAN-H lines):

Open wire check (F CAN-L, F CAN-H lines)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connectors.

?3.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected
 
Gauge control module connector A (32P): disconnected
Test circuit
F CAN-L
Test point 1
VSA modulator-control unit 21P connector No. 15 (RED)
Test point 2
Gauge control module connector A (32P) No. 20 (RED)

Test circuit
F CAN-H
Test point 1
VSA modulator-control unit 21P connector No. 8 (WHT)
Test point 2
Gauge control module connector A (32P) No. 19 (WHT)


Is there continuity?

     
YES
     
     
     
The F CAN-L and F CAN-H wires are OK. Go to step 4.
     
NO
     
     
     
Repair an open in the wire between the gauge control module and the VSA modulator-control unit.?
4.
Gauge control module check (substitution):

Gauge control module check (substitution)
?1.
Substitute a known-good gauge control module.

?2.
Reconnect the following connectors.

?3.
Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

?4.
Clear the DTC with the HDS.


?5.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?6.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
86-14 F-CAN Communication With Gauge Control Module Malfunction
    

Is DTC 86-14 indicated?

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
5.
VSA modulator-control unit check (update):

VSA modulator-control unit check (update)
?1.
Update the VSA modulator-control unit if it does not have the latest software.

?2.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?3.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 86-14 indicated?

     
YES
     
     
     
Check for loose terminals in the VSA modulator-control unit 21P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit.?
     
NO
     
     
     
Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?