Dtc P0101 Mass Or Volume Air Flow Circuit Range / Performance Problem. Corolla Auris

Двигатель. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150
Система Управления Двигателем 2Ad-Fhv. COROLLA, AURIS. ZZE150 ZRE151,152 NDE150

DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0101)

DTC P0101 Mass or Volume Air Flow Circuit Range / Performance Problem


DESCRIPTION

The mass air flow meter uses a platinum hot wire. The mass air flow meter consists of a platinum hot wire, a temperature sensor and a control circuit installed in a plastic housing. The mass air flow meter hot wire and temperature sensor (located in the intake air by-pass of the housing) detect changes in the intake air temperature.
The hot wire is maintained at the predetermined temperature by controlling the current flow through the hot wire. This current flow is then related as the output voltage of the mass air flow meter.
The circuit is constructed so that the platinum hot wire and temperature sensor provide a bridge circuit, with the power transistor controlled so that the potential of A and B remains equal to maintain the predetermined temperature.

COROLLA, AURIS. ZZE150 ZRE151,152 NDE150.Система Управления Двигателем 2Ad-Fhv.Система Ecd. Dtc P0101 Mass Or Volume Air Flow Circuit Range / Performance Problem


DTC No.
DTC Detection Condition
Trouble Area
P0101
After engine is warmed up, condition (a) continues for more than 10 seconds at idling (2-trip detection logic):
(a) Mass air flow meter output more than 2.2 V
Mass air flow meter
Conditions (a) and (b) continue for more than 6 seconds with engine speed at 2000 rpm or more (2-trip detection logic):
(a) VTA more than 0.1 V
(b) Mass air flow meter output less than 0.25 V

INSPECTION PROCEDURE

УКАЗАНИЕ:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0101)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch on (IG) and turn the tester on.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Result
    		Proceed to
    DTC P0101 and other DTCs are output
    		A
    DTC P0101 is output
    		B
    УКАЗАНИЕ:
    If codes other than P0101 are output, perform troubleshooting for those DTCs first.


B
REPLACE MASS AIR FLOW METER (Нажмите здесь)
A

GO TO DTC CHART (Нажмите здесь)