Toyota MR2 1988 Repair Manual page 318

Fl-122
Ohmmeter
DO
lO:
~+8
"-"'-~""
EFI SYSTEM - Electronic Control System
HT
F12850
3. INSPECT HEATER COIL RESISTANCE OF OXYGEN
SENSOR
Using an ohmmeter, measure the resistance between the
terminals +B and HT.
Resistance: 5.1 - 6.3
!1
If the resistance is not as specified, replace the sensor.