acura Workshop Repair Guides

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Testing For a Short With a Short Circuit Locator (Short Finder)|Page 3514 > < Testing For a Short With a Short Circuit Locator (Short Finder)|Page 3512

MDX V6-3471cc 3.5L (2002)

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Main Relay (Computer/Fuel System): Description and Operation

PGM-FI Main Relay

The PGM-FI relay contains two separate relays. One is energized whenever the ignition is on to supply battery voltage to the PCM, power to the
injectors, and power for the second relay. The second relay is energized to supply power to the fuel pump for two seconds when the ignition is switched
ON (II), and when the engine is running.

Testing For a Short With a Short Circuit Locator (Short Finder)|Page 3514 > < Testing For a Short With a Short Circuit Locator (Short Finder)|Page 3512