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CONTINUED FROM PAGE FI-73
① ② ③ ④
Repair the relevent diagnostic code
Malfunction code(s)
(ex. code 21)
Read and record diagnostic codes (See page FI-22)
Normal code
and code 21
Unshort terminals T and E₁ of the service connector.
And maintain engine at 2,500 rpm.
Measure voltage between terminals V_F and E₁.
0V 5V
Disconnect the PCV hose.
Measure voltage between terminals D_F and E₁
0V More than 0V
Repair (Over rich)
Disconnect the water temp. sensor connector and
connect resistor with a resitace of 4 — 8 KΩ or
another coded water temp. sensor.
Short terminals T and E₁ of the service connector.
Warm up the oxygen sensor with the engine at
2,500 rpm for approx. 90 seconds. And
maintain engine speed at 2,500 rpm.
Measure voltage between terminals V_F and E₁.
0V 5V
Replace the oxygen sensor Repair (Over lean)
