VSA DTC Troubleshooting: 86-12, 86-13
DTC 86-12: F-CAN Communication With PCM (Engine) Malfunction
DTC 86-13: F-CAN Communication With PCM (AT/CVT) Malfunction
NOTE:

DTC Description
DTC
Freeze Frame
86-12 F-CAN Communication With PCM (Engine) Malfunction
    
86-13 F-CAN Communication With PCM (AT/CVT) 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), or press the engine start/stop button to select the OFF mode.

?4.
Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
86-11 F-CAN Bus-Off Malfunction
    
86-12 F-CAN Communication With PCM (Engine) Malfunction
    
86-13 F-CAN Communication With PCM (AT/CVT) Malfunction
    

Is DTC 86-12 or 86-13 indicated?

     
YES
     
     
     
If only DTC 86-12 or 86-13 are 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.
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.
Short the SCS line with the HDS.


?3.
Disconnect the following connectors.

?4.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
VSA modulator-control unit 21P connector: disconnected
 
PCM connector A (51P): disconnected
Test circuit
F CAN-L
Test point 1
VSA modulator-control unit 21P connector No. 15 (RED)
Test point 2
L4 engine: PCM connector A (51P) No. 1 (RED)
V6 engine: PCM connector A (51P) No. 10 (RED)

Test circuit
F CAN-H
Test point 1
VSA modulator-control unit 21P connector No. 8 (WHT)
Test point 2
L4 engine: PCM connector A (51P) No. 2 (WHT)
V6 engine: PCM connector A (51P) No. 9 (WHT)
L4 engine

V6 engine


Is there continuity?

     
YES
     
     
     
The F CAN-L and F CAN-H wires are OK. Go to step 3.
     
NO
     
     
     
Repair an open in the wire between the PCM and the VSA modulator-control unit.?
3.
PCM check (update or substitution):

PCM check (update or substitution)
?1.
Reconnect the following connectors.

?2.
Update the PCM if it does not have the latest software, or substitute a known-good PCM.

?3.
Clear the DTC with the HDS.


?4.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?5.
Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

?6.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
86-12 F-CAN Communication With PCM (Engine) Malfunction
    
86-13 F-CAN Communication With PCM (AT/CVT) Malfunction
    

Is DTC 86-12 or 86-13 indicated?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM.?
4.
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), or press the engine start/stop button to select the OFF mode.

?3.
Test-drive the vehicle at 6 mph (10 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
     

Is DTC 86-12 or 86-13 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.?