Pinpoint Test 15: The High-Voltage Traction Battery (HTVB) Is Noisy
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PINPOINT TEST 15: THE HIGH-VOLTAGE TRACTION BATTERY (HVTB) IS NOISY - HYBRID
Normal Operation
NOTE: The battery fans may continue running for approximately 15 seconds after the key is turned to the OFF position. Once the fans turn off, they do not start again until the key is cycled to the ON position.
With the ignition switch in the ON position and the engine running, the HVTB has 2 internal cooling fans that circulate air through the HVTB.
Possible Causes
- HVTB internal cooling fans (part of the HVTB)
- HVTB
- Climate control system air leakage due to poor sealing
Diagnostic Procedure
WARNING: Wear high-voltage insulated safety gloves and a face shield when working with high-voltage batteries or cables. The high-voltage insulated safety gloves should be of the appropriate safety and protection rating. Inspect the gloves before use and always wear them with the leather outer glove. Any hole in the rubber insulating glove is a potential entry point for high-voltage. Failure to follow these instructions may result in serious personal injury or death.
WARNING: Turn OFF the ignition switch for a minimum of 5 minutes before removing high-voltage cables. High-voltage cables and wiring are orange in color. The nominal high-voltage traction battery voltage (HVTB) is 330 V DC. Failure to follow these instructions may result in serious personal injury or death.
WARNING: Depower the high-voltage traction battery (HVTB) before carrying out any removal or installation procedures affecting the high-voltage battery system. Failure to follow this instruction may result in serious personal injury or death.
WARNING: When servicing the high-voltage system, establish a buffer zone per the specified procedure. Failure to follow this instruction may result in serious personal injury or death.
