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Home >> Nissan-Datsun >> 2019 >> Altima Edition ONE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Control System (DTC/Circuit Diagnosis) (Pr25DD) (4 Of 4)) >> DTC/Circuit Diagnosis >> U1040 Eng Comm Circuit >> DTC Description >> PR25DD engine >> DTC Detection Logic

DTC Detection Logic

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When ECM unable to transmit engine communication signal.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

U1040

00

ENG COMM CIRCUIT

(Engine communication circuit)

Diagnosis condition

Ignition switch ON

Signal (terminal)

Engine communication signal

Threshold

ECM unable to transmit engine communication signal to generator

Diagnosis delay time

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