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Home >> Toyota >> 2020 >> Avalon Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 32 (Power Steering System - Diagnostic Codes & Circuit Tests (Hybrid)) >> POWER STEERING SYSTEM (for HV Model) >> DTC C1582: Assist Map Number Mismatch [04/2018 - ] >> Description

DTC C1582: Assist Map Number Mismatch [04/2018 - ]: Description

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When an incorrect hybrid vehicle control ECU, main body ECU (multiplex network body ECU) or skid control ECU (brake booster with master cylinder assembly) is installed after the assist map has been written to the power steering ECU (rack and pinion power steering gear assembly), DTC C1582 is stored because the information stored in the power steering ECU (rack and pinion power steering gear assembly) does not match the vehicle specifications.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
C1582 Assist Map Number Mismatch Assist map number mismatch
  • CAN communication system
  • Incorrect hybrid vehicle control ECU
  • Incorrect main body ECU (multiplex network body ECU)
  • Incorrect skid control ECU (brake booster with master cylinder assembly)
  • Rack and pinion power steering gear assembly
EPS warning light: Does not come on Assist Map Writing is performed or the power switch is turned on (IG) again -