See Figures 1 thru 12
Following are vacuum diagrams for most of the engine and emissions package combinations covered by this guide. Because vacuum circuits will vary based on various engine and vehicle options, always refer first to the vehicle emission control information label, if present.
Should the label be missing, or should vehicle be equipped with a different engine from the vehicle's original equipment, refer to the diagrams below for the same or similar configuration.
If you wish to obtain a replacement emissions label, most manufacturers make the labels available for purchase. The labels can usually be ordered from a local dealer.
Fig. Fig. 1: A vacuum diagram label is located under the hood-1MZ-FE engine shown
Fig. Fig. 2: Emission control system-1C-LTC and 2C-LTC engines
Fig. Fig. 3: Emission control system-2S-ELC engine Canada
Fig. Fig. 4: Emission control system-2S-ELC engine except Canada
Fig. Fig. 5: Emission control system-2VZ-FE engine
Fig. Fig. 6: Emission control system-3S-FE engine
Fig. Fig. 7: Emission control system-3VZ-FE engine
Fig. Fig. 8: Emission control system-1992-95 California 5S-FE engine
Fig. Fig. 9: Emission control system-1992-95 except California 5S-FE engine
Fig. Fig. 10: Emission control system-1996 A/T 5S-FE engine
Fig. Fig. 11: Emission control system-1996 M/T 5S-FE engine
Fig. Fig. 12: Emission control system-1MZ-FE engine
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