If voltage is supplied to the circuit being checked, voltage check can be used as circuit check.
Voltage between
“a” and body ground: approx. 5 V
“b” and body ground: approx. 5 V
“c” and body ground: 0 V
Voltage between
“a” and body ground: approx. 5 V
“b” and body ground: approx. 5 V – 2 v voltage
drop
“c” and body ground: 3 v – 2 v voltage drop


Continuity check
Short circuit check (wire harness to ground)Diagnostic information and procedures
Engine lubrication symptom diagnosis
Oil pressure check
Check the engine oil pressure periodically. This will give
a good indication of the condition of the moving parts.
Note
before checking the oil pressure, check the
following.
Oil level (refer to “engine oil and fi ...
Wiring diagram
Refer to “wire color symbols” in section 0a .
For e-02, 19, 24, 51
For e-03, 28
For e-14, 33
...
DTC “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 ...