Code No. P1B0E:
Motor coil U-phase temperature sensor (short to power supply/short circuit) Code
No. P1B0F: Motor coil U-phase temperature sensor (short to earth/open circuit) Code
No. P1B10: Motor coil V-phase temperature sensor (short to power supply/short circuit) Code
No. P1B11: Motor coil V-phase temperature sensor (short to earth/open circuit) Code
No. P1B12: Motor coil W-phase temperature sensor (short to power supply/short circuit) Code
No. P1B13: Motor coil W-phase temperature sensor (short to earth/open circuit)
ELECTRIC MOTOR UNIT CONTROL SYSTEM CIRCUIT
DIAGNOSIS CODE SET CONDITIONS
Diagnosis code No. P1B0E
If the motor (electric motor unit) coil U-phase temperature is kept at 201°C or
more when the electric motor switch is set to the ON position, the MCU will set the diagnosis code
No. P1B0E.
Diagnosis code No. P1B0F
If the motor (electric motor unit) coil U-phase temperature is kept at -41°C
or less when the electric motor switch is set to the ON position, the MCU will set the diagnosis
code No. P1B0F.
Diagnosis code No. P1B10
If the motor (electric motor unit) coil V-phase temperature (presumption) is kept
at 201°C or more when the electric motor switch is set to the ON position, the MCU
will set the diagnosis code No. P1B10.
Diagnosis code No. P1B11
If the motor (electric motor unit) coil V-phase temperature (presumption) is kept
at -41°C or less when the electric motor switch is set to the ON position,
the MCU will set the diagnosis code No. P1B11.
Diagnosis code No. P1B12
If the motor (electric motor unit) coil W-phase temperature is kept at 201°C or
more when the electric motor switch is set to the ON position, the MCU will set the diagnosis code
No. P1B12.
Diagnosis code No. P1B13
If the motor (electric motor unit) coil W-phase temperature is kept at -41°C
or less when the electric motor switch is set to the ON position, the MCU will set the diagnosis
code No. P1B13.
PROBABLE CAUSES
Malfunction of the temperature sensor circuit system
Malfunction of the motor (electric motor unit) (Malfunction of the temperature sensor)
Malfunction of the MCU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list
Check the motor service data. (Refer to .)
Data list
Item No. 17 : U-phase coil temperature
Item No. 18 : V-phase coil temperature
Item No. 19 : W-phase coil temperature
OK: Normal conditions are displayed for all the items.
Q.
Is the check result normal?
Go to Step 4.
Go to Step 2.
STEP 2. Connector check: E-07 MCU, motor (electric motor unit) connector
Q.
Is the check result normal?
YES : Go to Step 3.
Repair the damaged connector.
STEP 3. Check the resistance of the coil temperature sensor.
(1)Disconnect the E-07 MCU, motor (electric motor unit) connector.
(2)Measure the resistance value of the coil temperature sensor (U-phase and W-phase)
between the E-07 motor (electric motor unit) connector terminals.
Terminal No.
Normal value
3 - 9 (W-phase)
12.3 to 12.8 kΩ: 20°C 5.6 to 6.1 kΩ: 40°C 2.8 to 3.2 kΩ: 60°C 1.5 to 1.8 kΩ: 80°C
2 - 8 (U-phase)
Q.
Is the check result normal?
Go to Step 4.
Replace the motor (electric motor unit) (). Then
go to Step 4.
STEP 4. Diagnosis code recheck
Check again if the diagnosis code is set to the MCU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Set the electric motor switch to the "LOCK" (OFF) position, and start the electric
motor unit.
(4)Run the vehicle.
(5)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
Replace the MCU. (Refer to .) Then go to Step
5.
The diagnosis is complete.
STEP 5. Diagnosis code recheck
Check again if the diagnosis code is set to the MCU.
(1)Erase the stored diagnosis code.
(2)Set the electric motor switch from the "LOCK" (OFF) position to the "ON" position.
(3)Set the electric motor switch to the "LOCK" (OFF) position, and start the electric
motor unit.
)
)
.)
Go to Step 4.
Go to Step 2.
: Go to Step 3.