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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 22 ((Telematics Control Unit - Electrical Diagnostics - 500 - Electric)) >> DTC Troubleshooting >> B1590-00-Sim Card Error >> When Monitored

When Monitored

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The Telematics Control Unit (TCU) performs an internal self test. The repair of this fault condition does not involve any external circuitry and centers on verifying the integrity of the internal circuitry and software validity.

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