EPS DTC Troubleshooting: 53-03
DTC 53-03: Torque Sensor (Power Supply Check)
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the how to troubleshoot the EPS.

DTC Description
DTC
Freeze Frame
53-03 Torque sensor (Power Supply Check)
    

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), or press the engine start/stop button to select the OFF mode, then start the engine.

?4.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
53-03 Torque sensor (Power Supply Check)
    

Is DTC 53-03 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time.?
2.
Torque sensor check (TS-VDD line):

Torque sensor check (TS-VDD line)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connector.

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

?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
TS-VDD
   

Is the voltage between 4.5?5.5 V?

     
YES
     
     
     
The TS-VDD wire is OK. Replace the steering gearbox.?
     
NO
     
     
     
Go to step 3.
3.
Shorted wire check (TS-VDD line):

Shorted wire check (TS-VDD line)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connector.

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

?4.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
TS-VDD
   

Is the voltage between 4.5?5.5 V?

     
YES
     
     
     
Repair a short to ground in the wire between the torque sensor and the EPS control unit.?
     
NO
     
     
     
Go to step 4.
4.
EPS control unit check (update):

EPS control unit check (update)
?1.
Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

?2.
Reconnect the following connector.

?3.
Update the EPS control unit if it does not have the latest software.

?4.
Turn the ignition switch to LOCK (0), then turn it to ON (II) again, or select the OFF mode, then the ON mode.

?5.
Check for DTCs with the HDS.
DTC Description
DTC
Freeze Frame
53-03 Torque sensor (Power Supply Check)
    

Is DTC 53-03 indicated?

     
YES
     
     
     
     
NO
     
     
     
Troubleshooting is complete.?