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Home >> Volvo >> 2004 >> V40 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Guard Lock And Alarm (GLA) & Immobilizer Module (IMM) Diagnostic Trouble Codes >> IMM-321: Communication With The Engine Control Module (ECM). Signal Missing (B4204T2 CVVT; 2000) >> Signal missing >> Replacement of the immobilizer control unit

Replacement of the immobilizer control unit

Test using a new immobilizer control unit, see: Immobilizer control module

Initiate the control module as follows:Immobilizer control module, initiating

Continue when the fault has been remedied.