The 4WD ECU operates the Pump motor to obtain a target oil pressure which will tranfer a given torque to rear wheels.
If the 4WD ECU detects that the power voltage is more than a normal value, it sets P1825 and lets a warning lamp turn on.
Item
Detecting Condition
Possible cause
DTC Strategy
Checking power voltage of pressure sensor
Short in the circuit
Internal error in the coupling
Enable conditions
IG ON or Engine ON
Threshold value
The supply voltage of pressure sensor >= 5,25V
Detecting time
1 second
Fail Safe
Prohibition for 4WD control
Fig.1) Idle state