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Home >> Toyota >> 2006 >> Prius >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> P112 Hybrid Vehicle Control - DTC P0A94 - P3226, U0100 - U0146 >> DTC P0AA4-232 Hybrid Battery Negative Contractor Circuit Stuck Closed >> Monitor Description

Monitor Description

The HV control ECU monitors the No. 3 system main relay, because shutting off the high-voltage system might be impossible if the relay terminal becomes stuck. If the HV control ECU detects that the relay terminal has stuck closed, it illuminates the MIL and sets a DTC.

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