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Home >> Toyota >> 2013 >> RAV4 EV >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (HYBRID CONTROL SYSTEM (DIAGNOSTIC CODES (BMS_f001 - CHG_f075)) (ELECTRIC)) >> Hybrid Control System >> DTC BMS_f079: Contactor Power Supply Interrupted [09/2013 - ] >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2014 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • When performing BMS_f079 troubleshooting, use either a tool wrapped with vinyl insulation tape or an insulated tool. (It is extremely dangerous when a high-voltage charge passes through a non-insulated tool causing a short.)
  • Before inspecting the high-voltage system or disconnecting the low voltage connector of the electric vehicle traction motor assembly (inverter), DC/DC converter assembly, electric vehicle battery assembly or electric vehicle charger assembly, take safety precautions such as wearing insulated gloves and protective goggles, and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, attach a note to it to prevent other technicians from mistakenly reconnecting it while you are working on the high-voltage system.
  • After removing the service plug grip, wait for at least 10 minutes, and then check the voltage at the terminals in the inspection point in the electric vehicle battery assembly. The voltage should be 0 V before beginning work. Refer to PRECAUTION [09/2013 - ] .

    HINT: 

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the electric vehicle traction motor assembly (inverter), DC/DC converter assembly, electric vehicle battery assembly and electric vehicle charger assembly.

NOTE:

Check the condition of the auxiliary battery, as an alert code may be output due to a drop in the auxiliary battery voltage.

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