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Home >> Nissan-Datsun >> 2017 >> Murano SL, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (1 Of 4) >> DTC / Circuit Diagnosis >> DTC U1040: Eng Comm Circuit >> DTC Description >> DTC Detection Logic

DTC Detection Logic

When ECM unable to transmit engine communication signal.

DTC CONSULT screen terms
(Trouble diagnosis content)		 DTC detection condition
U1040 Engine communication line Diagnosis condition Ignition switch ON
Signal (terminal) Engine communication signal
Threshold ECM unable to transmit engine communication signal
Diagnosis delay time -
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