P3000-388

L110F HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3000-388: HV Battery Malfunction

DTC P3000-388 - HV Battery Malfunction

DESCRIPTION

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.






INSPECTION PROCEDURE
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.
- When the engine cannot be started, DTC P3000-388 may be set because the HV battery cannot be charged.

PROCEDURE

1. CHECK DTC OUTPUT (HV)
(a) Connect the intelligent tester or Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / HV ECU / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Hybrid Control / Trouble Codes.
(d) Check if DTCs are output.
Result:






B -- GO TO DTC CHART
A -- Continue to next step.
2. CHECK DTC OUTPUT (ENGINE CONTROL SYSTEM)
(a) Select the following menu items:
(1) Intelligent tester - Select: DIAGNOSIS /ENHANCED OBDII / DTC INFO / CURRENT CODES.
(2) Techstream - Select: Powertrain / Engine and ECT / Trouble Codes.
(b) Check if DTCs are output.
Result:






B -- GO TO DTC CHART
A -- Continue to next step.
3. CHECK AMOUNT OF GASOLINE
(a) Turn the power switch on (IG).
(b) Check the amount of fuel by referring to the fuel gauge in the meter.
Result:





HINT: Add fuel until the low fuel level warning light turns off.

B -- REFUEL VEHICLE
A -- Continue to next step.
4. CHECK ENGINE START
(a) Turn the power switch on (READY).
(b) Check if the engine starts.
HINT: Depressing the accelerator pedal with the shift lever in the P position will cause the engine to start.

Result:






B -- REPLACE HV BATTERY ASSEMBLY
A -- LEAVE VEHICLE IN P POSITION, AND CHARGE HV BATTERY IN IDLE STATUS UNTIL IDLING STOPS