Dtc “c36” (p1764), “c37” (p1765), “c38” (p1766) or “c39” (p1767): secondary
fuel injector circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
Some failure exists in the fuel injector signal in a high
load, high revolution condition.
Injector circuit open or short.
Injector malfunction.
Ecm malfunction.
...
Engine coolant solution
Use engine coolant that is com·
patible with an aluminum radiator,
mixed with distilled water at a
50:50 mixture ratio for engine
coolant solution. An engine coolant
mixture other than 50:50 can
affect cooling efficiency or rust
inhibiting performance.
Engine coolant
Engine coolant should b ...
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 ...