EPS DTC Troubleshooting: 83-01, 83-02
DTC 83-01: CAN Communication Failure
DTC 83-02: CAN Communication Timeout Error
NOTE:

DTC Description
DTC
Freeze Frame
83-01 CAN Communication Failure
    
83-02 CAN Communication Timeout Error
    

1.
Problem verification:

Problem verification
?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.
Wait 60 seconds or more.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
83-01 CAN Communication Failure
    
83-02 CAN Communication Timeout Error
    

Is DTC 83-01 or 83-02 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time.?
2.
Open wire check (F CAN-H, F CAN-L lines) 1:

Open wire check (F CAN-H, F CAN-L lines) 1
?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
 
EPS control unit connector A (11P): disconnected
 
VSA modulator-control unit 21P connector : disconnected
Test circuit
F CAN-H
Test point 1
EPS control unit connector A (11P) No. 10 (WHT)
Test point 2
VSA modulator-control unit 21P connector No. 8 (WHT)

Test circuit
F CAN-L
Test point 1
EPS control unit connector A (11P) No. 11 (RED)
Test point 2
VSA modulator-control unit 21P connector No. 15 (RED)


Is there continuity?

     
YES
     
     
     
The F CAN-H and F CAN-L wires are not open. Go to step 3.
     
NO
     
     
     
Repair an open in the wire between the EPS control unit and the VSA modulator-control unit.?
3.
Open wire check (F CAN-H, F CAN-L lines) 2:

Open wire check (F CAN-H, F CAN-L lines) 2
?1.
Reconnect the following connector.

?2.
Disconnect the following connector.

?3.
Check for continuity between test points 1 and 2.
Test condition
IG LOCK (0) or OFF mode
 
EPS control unit connector A (11P): disconnected
 
Steering angle sensor 4P connector: disconnected
Test circuit
F CAN-H
Test point 1
EPS control unit connector A (11P) No. 10 (WHT)
Test point 2
Steering angle sensor 4P connector No. 2 (WHT)

Test circuit
F CAN-L
Test point 1
EPS control unit connector A (11P) No. 11 (RED)
Test point 2
Steering angle sensor 4P connector No. 3 (RED)


Is there continuity?

     
YES
     
     
     
The F CAN-H and F CAN-L wires are OK. Go to step 4.
     
NO
     
     
     
Repair an open in the wire between the EPS control unit and the steering angle sensor.?
4.
EPS control unit check (update):

EPS control unit check (update)
?1.
Reconnect the following connectors.

?2.
Update the EPS control unit if it does not have the latest software.

?3.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, then start the engine.

?4.
Wait 60 seconds or more.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
83-01 CAN Communication Failure
    
83-02 CAN Communication Timeout Error
    

Is DTC 83-01 or 83-02 indicated?

     
YES
     
     
     
     
NO
     
     
     
Troubleshooting is complete.?