Toyota 3F-E Repair Manual Supplement page 135

FI-76
CONTINUED FROM PAGE FI-75
T
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EFI SYSTEM —
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Repair the relevant diagnostic code.
Read and record diagnostic codes. (See pages FI-24, 25)
Disconnect terminals TE1 and El of the check connector.
And maintain engine at 2,500 rpm.
Measure voltage between terminals VF1 (VF2) and El.
Disconnect the PCV hose.
Measure voltage between terminals VF1 (VF2) and El.
0V
( Repair (Over rich)
Disconnect the water temp. sensor connector and
connect resistor with a resistance of 4 — 8 k) or
another coded water temp. sensor.
Connect terminals TE1 and El of the check connector.
Warm up the oxygen sensor with the engine at 2,500
rpm for approx. 120 seconds. And maintain engine
speed at 2,500 rpm.
Measure voltage between terminals VF1 (VF2) and El.
Replace the oxygen sensor.
Electronic Control System
Malfunction code(s)
(Ex. code Nos. 21, 25, 26 and 28)
Normal code, code Nos. 21,
25, 26 and 28
0V
More than 0 V
OV
5V
)
5V
Repair (Over lean) )
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