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Electronic Spark Timing <--> [Electronic Spark Control Module] > < Horn Relay|Locations

Camaro V8-350 5.7L (1989)

  • Relays and Modules
  • Relays and Modules - Powertrain Management
  • Relays and Modules - Computers and Control Systems
  • Mass Air Flow Relay <--> [Air Flow Meter/Sensor Relay]
  • Component Information
  • Description and Operation

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Mass Air Flow Relay: Description and Operation

Mass Air Flow Relay

Due to contaminants in the atmosphere, a residue may build up on a Mass Air Flow (MAF) Sensor sensing wire.  To maintain an accurate reading from
the sensor, a burn-off cycle will occur when the ignition is turned off after the the engine has been running a specific amount of time and the engine is
warmed up.

The burn-off function is enabled when the ECM energizes the MAF sensor burn-off relay.  With the MAF sensor burn-off relay energized, voltage will
be supplied to the MAF Sensor.  Voltage will also be supplied through the normally closed set of contacts in the MAF power relay in some models which
will supply 12 volts to the MAF Sensor.   

  • Relays and Modules
  • Relays and Modules - Powertrain Management
  • Relays and Modules - Computers and Control Systems
  • Mass Air Flow Relay <--> [Air Flow Meter/Sensor Relay]
  • Component Information
  • Description and Operation

Electronic Spark Timing <--> [Electronic Spark Control Module] > < Horn Relay|Locations