P3000-603 - HV Battery Malfunction

L110 HYBRID VEHICLE CONTROL: HYBRID CONTROL SYSTEM: P3000-603: HV Battery Malfunction
P3000-603 - HV Battery Malfunction

DESCRIPTION

The hybrid vehicle control ECU monitors its internal operation and detects malfunctions.





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

PROCEDURE

1. CHECK DTC OUTPUT (HV)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Select the following menu items: Powertrain / Hybrid Control / Trouble Codes.

(d) Check if DTCs are output.

Result:

DTCs other than P3000-603 are output.

YES -- GO TO DTC CHART
NO -- Continue to next step.

2. REPLACE HYBRID VEHICLE CONTROL ECU

(a) Replace the hybrid vehicle control ECU Service and Repair.

HINT
If DTC P3000-603 is output, replace the HV battery. This code indicates that an HV battery cooling system problem exists, and this problem will result in deterioration of the battery due to high temperatures.

NEXT -- REPLACE HV BATTERY ASSEMBLY Components