Code 32, EGR Circuit Error BACKPRESSURE EGR With Sol: Notes
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Control module controls a solenoid regulating vacuum to EGR valve. Normally closed solenoid prevents vacuum from passing until it is energized by control module. A properly operating EGR will directly affect fuel integrator counts. With EGR valve open, integrator counts will be less than without EGR operation. If monitored integrator counts do not change with EGR commanded, Code 32 will set.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- EGR valve should open when vacuum is applied to solenoid. Vacuum should hold.
- When Tech 1 energizes EGR solenoid, vacuum to EGR valve should bleed through a vent in solenoid and EGR valve should close. Vacuum gauge may or may not bleed off vacuum. However, this does not indicate a problem.
- Determines if fault lies in electrical control part of system, connector or solenoid.
- This system uses a negative backpressure EGR valve. Valve should hold vacuum with engine off.
- When engine is started, backpressure should cause vacuum to bleed off and valve should fully close.