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Home >> Toyota >> 2002 >> Prius >> Repair and Diagnosis >> Electrical >> Charging Systems >> HV Battery Control System - Diagnostics >> Circuit Inspection >> DTC P1600: Back Up Power Source Circuit Malfunction >> Circuit Description

Circuit Description

Battery positive voltage is supplied to terminal AM of the Battery ECU even when the ignition switch is OFF to read the DTC memory and freeze frame data adaptive control value memory, etc.

Fig 1: Identifying DTC P1600 Trouble Areas
G01112757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NOTE: If DTC P1600 appears, the Battery ECU does not store any other DTC.
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