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My 1998 pontiac grand prix gt has A code po1676

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DTC P1676 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
DTC P1676 set indicates an improper voltage level has been detected on the output circuit which controls the EVAP purge solenoid.
Circuit Description
Output Driver Modules (ODMs) are used by the PCM to turn on many of the current-driven devices that are needed to control various engine and Transaxle functions. Each ODM is capable of controlling up to 7 separate outputs by applying ground to the device which the PCM is commanding ON. Unlike the Quad Driver Modules (QDMs) used in prior model years, ODMs have the capability of diagnosing each output circuit individually.
Diagnostic Aids
Check for the following conditions:
?€¢
Poor connection at the PCM.


Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.


?€¢
Damaged harness.


?€¢
Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM, turn the ignition ON and observe a voltmeter connected between the EVAP purge solenoid control circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the EVAP purge solenoid. A change in voltage will indicate the location of the malfunction.

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Posted on May 01, 2015

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