Special tools and equipment
Schematic and routing diagramDTC “c21” (p0110-h/l): iat sensor circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
C21
Output voltage is not with in the following
range.
0.15 V ≤ Sensor voltage < 4.85 V
Iat sensor circuit open or short.
Iat sensor malfunction.
Ec ...
Fuel mesh filter inspection and cleaning
Inspect the fuel mesh filter in the following procedures:
remove the fuel mesh filter. Refer to “fuel pump disassembly and
assembly” .
If the fuel mesh filter is clogged with foreign particles,
it hinders smooth gasoline flow resulting in loss of
engine power. Such a filter ...
Continuity check
Measure resistance across coupler “b” (between “a”
and “c” in figure).
If no continuity is indicated (infinity or over limit), the
circuit is open between terminals “a” and “c”.
Disconnect the coupler “b” and measure resistance
between couplers “a” and “b-1”.
If no continuity ...