And I've done the MAF cleaner ad Nauseum, greased all elec. Anyway, given the low amount of success others have posted, I will keep trying to track this down, and if it IS a wiring issue, get some definitive info/pictures of what and where the problem lies. Voltage? Sometimes I feel like just Driving the "F-Bomb" (01 F-150 that is!). So everything points to wiring/lowfrequency/voltage, But yet I can't catch it in the act displaying a bad ground/signal voltage/or ign.
MASS OR VOLUME AIRFLOW A CIRCUIT LOW CODE
Remove the EFI No.Well, I did my Due Diligence-read all the "P0102 Posts" and mine seems to fit the bill-stuttering, runs fine for a bit after clearing the code, runs fine "MAF unplugged", Already swaped 2 "Known good" MAF's from other cars-they Throw the code ONLY on this one, and No Codes on any of the other MAF's-including mine-on the other cars.And swapped out the PCM (Have the original as well as an "Intense" tuned mild PCM).Measure the resistance according to the value(s) in the.Or N position and the A/C switch should be turned off.Ĥ CHECK HARNESS AND CONNECTOR (MASS AIR FLOW METER - ECM) The transmission gear selector lever should be in the P Measure the voltage between the terminals of the E9.Measure the voltage according to the value(s) in the.Turn the ignition switch to the ON position.Disconnect the M6 Mass Air Flow (MAF) meter.*1: The value must be changed when the throttle valve isĢ INSPECT MASS AIR FLOW METER (POWER SOURCE VOLTAGE) Read the values displayed on the tester.Select the following menu items: DIAGNOSIS /ĮNHANCED OBD II / DATA LIST / PRIMARY / MAF.Connect the intelligent tester to the DLC3.Warmed up or not, whether the air-fuel ratio was lean or rich, as well as otherġ READ VALUE OF INTELLIGENT TESTER (MASS AIR FLOW RATE) WhenĬan be helpful in determining whether the vehicle was running or stopped, Information as freeze frame data the moment a DTC is stored. Read freeze frame data using the intelligent tester. If the malfunction is not repaired successfully, a DTC is set 3 seconds after When the sensor voltage output remains less than 0.2 V, or more than 4.9 V, for The ECM interprets this deviation as a malfunction in the MAF If there is a defect in the MAF meter or an open or short circuit, the Open in Mass Air Flow (MAF) meter power source circuit.Intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / MAF. When any of these DTCs are set, check the air-flow rate by selecting the Short in MAF meter circuit (+B circuit).Short in Mass Air Flow (MAF) meter circuit for 3 Open in Mass Air Flow (MAF) meter circuit for 3 Open or short in Mass Air Flow (MAF) meter circuit for 3 Timing is calculated by the ECM, according to the engine RPM and throttle valveĬontinues until a pass condition is detected When any of these DTCs are set, the ECM enters fail-safe mode. The circuit is constructed so that the platinum hot wire and the temperatureĬircuit, and the power transistor is controlled so that the potentials of A and
Voltage level is proportional to the air flow through the sensor, and the ECM Incoming air cools both the wire and an internal thermistor, changing theirĬonstant current value, the ECM varies the voltage applied to these components Inside the MAF meter, there is a heated platinum wire which is exposed toīy applying a specific electrical current to the wire, the ECM heats it to a The ECM uses this information to determine the fuel injection time and to The Mass Air Flow (MAF) meter is a sensor that measures the amount of air Mass or Volume Air Flow Circuit High Input
MASS OR VOLUME AIRFLOW A CIRCUIT LOW MANUAL
Toyota Sienna Service Manual / 2GR-FE Engine control system / SFI system / Diagnostic trouble code chart / Mass or Volume Air Flow Circuit/ Mass or Volume Air Flow Circuit Low Input/
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