DTC Troubleshooting: C1C20-62
DTC C1C20-62: Neutral Sensor Failure
NOTE: Before you troubleshoot, review the general troubleshooting information.

DTC Description
DTC
Freeze Frame
C1C20-62 Neutral Sensor Failure
    

1.
DTC check:

DTC check
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Turn the vehicle to the OFF (LOCK) mode.

?4.
Test-drive the vehicle at 19 mph (30 km/h) or more for 60 seconds 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
U0029-00 CAN Communication Failure (Bus OFF)
    
U0100-00 CAN Communication Failure with ECM/ISU
    
C1C20-62 Neutral Sensor Failure
    

Is DTC C1C20-62 indicated?

     
YES
     
     
     
If DTC C1C20-62 is only indicated, go to step 2.
     
YES
     
     
     
If DTC U0029-00 or U0100-00 are also indicated, go to U0029-00 or U0100-00 .?
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.?
2.
PGM-FI system parameter check:

PGM-FI system parameter check
?1.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
Status of Neutral Position
    

Does the parameter changes when the shift lever is in neutral, and then shift lever is not in neutral?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
3.
VSA modulator-control unit check:

VSA modulator-control unit check
?1.
Check the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
NEUTRAL SWITCH STATUS
    

Does the parameter changes when the shift lever is in neutral, and then shift lever is not in neutral?

     
YES
     
     
     
The system is OK at this time. Refer to intermittent failures troubleshooting.?
     
NO
     
     
     
Check for loose terminals and poor connections in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit.?