If there is any problem in the CAN bus lines,
an incorrect diagnosis code may be set. Prior to this diagnosis, always diagnose the CAN bus lines.
REGULAR CHARGING CONTROL SYSTEM CIRCUIT
OPERATION
The high-voltage circuit activation and shutdown are
controlled by the EV-ECU. The EV-ECU also monitors the voltage of the smooth condenser in the
MCU via the CAN communication.
DIAGNOSIS CODE SET CONDITIONS
When the main contactors (+) and (-)
are set to ON, if the voltage of the smooth condenser in the MCU is kept at 200 V or less, the
diagnosis code No. P1A17 will be set.
PROBABLE CAUSES
Damaged wiring harness or connector(s)
Malfunction of the main battery assembly
Malfunction of the MCU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnosis
Use the M.U.T.-III to diagnose the CAN bus lines.
Q.
Is the check result normal?
Go to Step 3.
Repair the CAN bus line. (Refer to GROUP 54C - Troubleshooting .)
Then go to Step 2.
STEP 2. Diagnosis code recheck after resetting CAN bus lines
Check again if the diagnosis code No. P1A17 is set to the EV-ECU.
(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 "START" position, and start the electric motor
unit.
(4)Check if the diagnosis code is set.
Q.
Is the diagnosis code set?
Go to Step 3.
This diagnosis is complete.
STEP 3. Use M.U.T.-III to confirm a diagnosis code of other systems.
Check if the diagnosis code No. P1A1B is set to the MCU.
Q.
Is the diagnosis code set?
Carry out troubleshooting for the diagnosis code P1A1B. (Refer to .)
Then go to Step 4.
)
)
Go to Step 3.
Repair the CAN bus line. (Refer to GROUP 54C - Troubleshooting 
.)
Then go to Step 2.