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It doesn't matter what the outside air temperature is.
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Oh yeah??? well , get it straight....
..And who said air temp???
Criteria for 94/95 HFM N3/1 mapping/signal control of AIR system:
10C [50F] -40C [104F] Coolant temp.
RPM < 3600
Specified MAF air mass not exceded
Open Loop 02 sensor circuit.
ALL have to be satisfied for for N3/1 control module siginal operation
SOV y32 circuit simultaneously energized when same conditions are met.
Vac flow from SOV opens 126 AIR valve, pump pressure flows through 127 Check valve to exhaust ports 3&4.
Per Benz
Don't confuse AIR Emmissions Cat warm-up mapping with diagnostic module self-test...
Last edited by Arthur Dalton; 02-10-2005 at 09:34 PM.
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