Engine cooling symptom diagnosis

Schematic and routing diagramDTC “c60” (p0480): cooling fan relay
circuit malfunction
Detected condition and possible cause
Detected condition
Possible cause
Cooling fan relay signal is not input to ecm.
Cooling fan relay circuit open or short.
Ecm malfunction.
Wiring diagram
Troubleshooting
Caution
when using ...
Excva adjustment
Inspect the excva operation and adjust it if necessary
in the following steps:
Step 1
Set the excva to the adjustment position. Refer to
“excv cable removal and installation” (page 1k-
6).
Step 2
Turn the ignition switch off.
Turn the mode select switch off.
Turn the ...
Diagnostic information and procedures
Engine mechanical symptom diagnosis
Refer to “engine symptom diagnosis” in section 1a .
Compression pressure check
The compression pressure reading of a cylinder is a
good indicator of its internal condition.
The decision to overhaul the cylinder is often based on
the results of a compressio ...