DTC Troubleshooting: P1855
DTC P1855: Inclination Sensor Circuit Range/Performance
NOTE:
Before you troubleshoot, review the General Troubleshooting Information.
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P1855 Inclination Sensor Circuit Range/Performance
      

1.
Determine possible failure area (VSA system, CVT system):

Determine possible failure area (VSA system, CVT system)
?1.
Turn the vehicle to the ON mode.

?2.
Clear the DTC with the HDS.




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

?4.
Turn the vehicle to the ON mode.

?5.
Check for DTCs in the VSA system with the HDS.
DTC Description
DTC
Freeze Frame
     

Is any DTC indicated in the VSA system?

     
YES
     
     
     
     
NO
     
     
     
Go to step 2.
2.
Inclination sensor check:

Inclination sensor check
?1.
Park the vehicle on the level ground.

?2.
Check and record the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
Inclination Sensor Output Voltage
    

?3.
Apply the parking brake, block the rear wheels, and raise the front of the vehicle over 300 mm (11.81 in).

?4.
Check and record the parameter(s) below with the HDS.
Signal
Current conditions
Values
Unit
Inclination Sensor Output Voltage
    

?5.
Calculate the fluctuation of the output voltage.

Is the fluctuation of the output voltage less than 0.03 V?

     
YES
     
     
     
Faulty inclination sensor. Replace the VSA modulator-control unit.?
     
NO
     
     
     
The inclination sensor is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If DTC P1855 goes away and the PCM was updated, troubleshooting is complete. If DTC P1855 goes away and the PCM was substituted, replace the original PCM.?