Removal Of Air Flow Meter; Inspection Of Air Flow Meter; Installation Of Air Flow Meter - Toyota MR2 1988 Repair Manual

EFI SYSTEM - Air Induction System
Fl-95
Fl1859
f:C3~~~~~
u u
Fe Vs
Measuring
Plate
REMOVAL OF AIR FLOW METER
1. REMOVE RESONATOR (4A-GE) OR INTERCOOLER
(4A-GZE)
2. DISCONNECT AIR FLOW METER CONNECTOR
3.
DISCONNECT AIR CLEANER HOSES FROM AIR FLOW
METER
4. REMOVE AIR FLOW METER
Remove the three bolts and air flow meter.
INSPECTION OF AIR FLOW METER
MEASURE RESISTANCE OF AIR FLOW METER
Using an ohmmeter, measure the resistance between each
terminal by moving the measuring plate.
i
Resistance f!
Terminals
Measuring plate
4A-GE 4A-GZE opening
Infinity
Fully closed
E1- Fe
I
Zero
Other than
closed
20-400 200- 600 Fully closed
Ez- Vs
20- 3,000
20-1,200 Fully open
NOTE: Resistance between terminals Ez and Vs will
change in a wave pattern as the measuring plate slowly opens.
INSTALLATION OF AIR FLOW METER
1. INSTALL AIR FLOW METER
2. CONNECT AIR CLEANER HOSES TO AIR FLOW
METER
3.
CONNECT AIR FLOW METER CONNECTOR
4. INSTALL RESONATOR (4A-GE) OR INTERCOOLER
(4A-GZE)