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Home >> Toyota >> 2007 >> Camry CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 64 (P311 Hybrid Vehicle Control - Control System Diagnostic & Troubleshooting Introduction, Precautions, Parts Location, System Description, Terminals Of Ecu, Diagnostic Trouble Code Chart) >> Hybrid Control System >> Precaution
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Hybrid Control System: Precaution

WARNING: This page is about a different variant/trim than selected.
NOTE: When the negative (-) battery cable has been disconnected, initialize the following systems after the cable is reconnected.
SYSTEM REFERENCE

System See Procedure
SFI System INITIALIZATION
  1. PRECAUTIONS FOR INSPECTING THE HYBRID CONTROL SYSTEM 
    1. 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. Make sure to turn the power switch off before removing the service plug grip. 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.
      NOTE: Turning the power switch on (READY) with the service plug grip removed could cause a malfunction. Do not turn the power switch on (READY) unless instructed by the repair manual.
    2. After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals.
      Fig 1: Disconnecting Service Plug
      G05007263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

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

    3. Turn the power switch off, wear insulated gloves, and disconnect the negative terminal of the auxiliary battery before touching any of the orange-colored wires of the high-voltage system.
    4. Turn the power switch off before performing any resistance checks.
    5. Turn the power switch off before disconnecting or reconnecting any connectors.
  2. PRECAUTIONS FOR HYBRID CONTROL SYSTEM ACTIVATION 
    1. When the auxiliary battery has been disconnected and reconnected, attempting to turn the power switch on (READY) may not start the system (the system may not enter the READY-on state) on the first attempt. If so, turn the power switch off and re-attempt to turn the power switch on (READY).