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TOYOTA’S DEFECTIVE “SAFETY LAYERS”Layer 1Layer 2Mirroring of Critical VariablesDTCs and Fail-Safe ModesBarr Chapter RegardingToyota’s Memory ProtectionsBarr Chapter RegardingToyota’s Fail-Safe ModesLayer 3Layer 4Watchdog SupervisorESP-B2 Monitor CPUBarr Chapter RegardingToyota’s Watchdog SupervisorBarr Chapter RegardingToyota’s Monitor CPU34