P3000 / INF388

DTC P3000-388 HV Battery Malfunction

DESCRIPTION

DTC Detection Condition:

The hybrid vehicle control ECU alerts the driver and performs fail-safe control based on error signals received from the battery smart unit. This DTC is set when the SOC (state of charge) of the HV battery starts to drop as a result of leaving the shift lever in the N position, running out of fuel, or a malfunction in the HV control system.

Step 1-2:

Step 2(Continued)-4:

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

HINT:
- If the vehicle is stopped or parked with the shift lever in the N position for a long time, DTC P3000-388 may be set because the HV battery cannot be charged.

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

- If the vehicle is stopped or parked with the shift lever in the N position for a long time, DTC P3000-388 may be set because the HV battery cannot be charged.
- When the engine cannot be started, DTC P3000-388 may be set because the HV battery cannot be charged.