Toyota 3S-GE Repair Manual page 302

EG'288 ENGINE — EFI SYSTEM
CONTINUED FROM PAGE EG-287
@ ® @
(D I A
Disconnect the water temp. sensor connector and connect
resistor with a resistance of 4 — 8 kQ or send an equivalent
simulation signal.
Connect terminals TE1 and E1 of the check connector.
Warm up the oxygen sensor with the engine at 2,500 rpm
for approx. 90 seconds. Maintain engine speed at
2,500 rpm.
Measure voltage between terminals VF1 and E1.
» IOV 5V
I
——i——~>< Replace the oxygen sensor. D Repair (Over Iean)
%
VOSQN
Ohmmeter 3. INSPECT HEATER RESISTANCE OF OXYGEN
((Il(Q(¢mm_\ B HT
O .
Q 3'
O
\II'|~I
"'
P0307?
SENSOR
Using an ohmmeter, measure the resistance between
the terminal +B and HT.
Resistance (Cold):
5.1 —~ 6.3 Q at 20°C(68°F)
If the resistance is not as specified, replace the
SBHSOF.