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 EMCU via the CAN communication.
DIAGNOSIS CODE SET CONDITIONS
If the charging time of the smooth condenser in the EMCU
reaches the specified time or more, the diagnosis code No. P1A15 will be set.
PROBABLE CAUSES
Damaged wiring harness or connector(s)
Malfunction of the high-voltage fuse No.1 (Main, 280A) (main battery assembly)
Malfunction of the main battery assembly
Malfunction of the EMCU
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. P1A15 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.