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Home >> Nissan-Datsun >> 2017 >> Quest SL >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> Power Control System (IPDM E/R) >> System Description >> System >> Relay Control System >> Fail-Safe >> Can Communication Control >> If No Can Communication Is Available With ECM
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If No Can Communication Is Available With ECM

Control part Fail-safe operation
Cooling fan
  • Turns ON the cooling fan relay - 2 and the cooling fan relay - 3 when the ignition switch is turned ON (Cooling fan operates at HI)
  • Turns OFF the cooling fan relay - 1, the cooling fan relay - 2 and the cooling fan relay - 3 when the ignition switch is turned OFF (Cooling fan does not operate)
A/C compressor A/C relay OFF
Alternator Outputs the power generation command signal (PWM signal) 0%
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