97 Lexus LS400 MAF's Wiring Schematic
01-01-18, 03:30 PM
#1
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97 Lexus LS400 MAF's Wiring Schematic
Hi there,
Does anyone have a schematic showing the connections of the 5 wires at the other end of the MAF's connector? I have an intermittent at the connector & it affects my Long Term Fuel Trims (LTFT's). I can push or pull or play w/ the wires & the LTFT's can go from rich condition (-18% on both banks) to normal (0%). Let me know. Thanks in advance.
John
Does anyone have a schematic showing the connections of the 5 wires at the other end of the MAF's connector? I have an intermittent at the connector & it affects my Long Term Fuel Trims (LTFT's). I can push or pull or play w/ the wires & the LTFT's can go from rich condition (-18% on both banks) to normal (0%). Let me know. Thanks in advance.
John
01-01-18, 05:46 PM
#2
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Hi there,
Does anyone have a schematic showing the connections of the 5 wires at the other end of the MAF's connector? I have an intermittent at the connector & it affects my Long Term Fuel Trims (LTFT's). I can push or pull or play w/ the wires & the LTFT's can go from rich condition (-18% on both banks) to normal (0%). Let me know. Thanks in advance.
John
Does anyone have a schematic showing the connections of the 5 wires at the other end of the MAF's connector? I have an intermittent at the connector & it affects my Long Term Fuel Trims (LTFT's). I can push or pull or play w/ the wires & the LTFT's can go from rich condition (-18% on both banks) to normal (0%). Let me know. Thanks in advance.
John
01-02-18, 06:54 AM
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Yamae- It's kind of hard to read when it's only a partial schematic & in Japanese but from what I can see, pin 1 is the supplied 12V to the MAF, pin 4 is the supplied 5V to the IAT, pin 5 is ground. Pins 3 & 5 are being pulled up to 5V & ground through the resistors, respectively so they must be the MAF's outputs to the ECU. Thanks
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