DTC Troubleshooting: P1890
DTC P1890: CVT Speed Control System
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1890 CVT Speed Control System
     

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.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
       

Is there any DTC(s) other than DTC P1890?

     
YES
     
     
     
Go to the indicated DTC's troubleshooting.?
     
NO
     
     
     
Go to step 2.
2.
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.
Start the engine, and warm it up to normal operating temperature (the radiator fan comes on twice).

?4.
Test-drive the vehicle in D, accelerate slowly until the vehicle speed reaches 37 mph (60 km/h) on a flat road, then keep the vehicle at speeds about 37 mph (60 km/h) for at least 60 seconds.

?5.
Monitor the OBD STATUS for P1890 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P1890 CVT Speed Control System
 


Does the HDS indicate FAILED?

     
YES
     
     
     
     
NO
     
     
     
If the HDS indicates PASSED, intermittent failure, the system is OK at this time. If the HDS indicates NOT COMPLETED, test-drive again.?
Repair verification (OBD STATUS 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.
Start the engine, and warm it up to normal operating temperature (the radiator fan comes on twice).

?4.
Test-drive the vehicle in D, accelerate from a stop at over 0.5/8 throttle (with 1.22 V of the APP sensor voltage by monitoring APP Sensor A (V) with the HDS) until the vehicle speed reaches 37 mph (60 km/h) on a flat road for at least 18 seconds, then keep the vehicle at speeds about 37 mph (60 km/h) for at least 60 seconds.

?5.
Monitor the OBD STATUS for P1890 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P1890 CVT Speed Control System
 


Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?

     
PASSED
     
     
     
Troubleshooting is complete. Check for other DTC after this troubleshooting. If any other Pending or Confirmed DTCs were indicated, go to the indicated DTC's troubleshooting.?
     
FAILED
     
     
     
Troubleshooting is incomplete. Go to step 2, and recheck.
     
NOT COMPLETED
     
     
     
Repair verification is incomplete. Meet the test condition, and check the OBD STATUS again.