Pinpoint Test 14: DTCs P0A81, P0A96 - Hybrid Battery Pack Cooling Fans 1 And 2 Control Circuits

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PINPOINT TEST 14: DTCs P0A81, P0A96 - HYBRID BATTERY PACK COOLING FANS 1 AND 2 CONTROL CIRCUITS

Normal Operation

With the ignition switch in the ON position and the engine on or off (the engine must have started at least once after the key was cycled to ON), 2 internal fans in the high-voltage traction battery (HVTB) circulate air to maintain a specific temperature range. A failure of the cooling fan(s) or their associated circuits causes one (or both) of the DTCs to be set.

- P0A81 (Hybrid Battery Pack Cooling Fan 1 Control Circuit) - An open in battery junction box (BJB) fuse 15 (50A), an HVTB cooling fan 1 fault or circuit (W/R) feedback status does not match battery control module (BCM) commands or an open or high resistance on HVTB ground circuit (B/GY) causes the BCM to set this DTC.
- P0A96 (Hybrid Battery Pack Cooling Fan 2 Control Circuit) - An open in BJB fuse 15 (50A), an HVTB cooling fan 2 fault or circuit (W/R) feedback status does not match BCM commands or an open or high resistance on HVTB ground circuit (B/GY) causes the BCM to set this DTC.

Possible Causes
- Fuse
- Wiring, terminals or connectors
- Cooling fan 1 or 2 (part of HVTB)
- HVTB

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.

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