Engine cooling symptom diagnosis

Schematic and routing diagramDTC “c42” (p1650): ig switch circuit
malfunction
Detected condition and possible cause
Detected condition
Possible cause
Ignition switch signal is not input to the ecm.
Ignition system circuit open or short.
Ecm malfunction.
When the id agreement is not verified.
Ecm does not re ...
General description
Engine coolant description
Caution
use a high quality ethylene glycol base
anti-freeze, mixed with distilled water. Do
not mix an alcohol base anti-freeze and
different brands of anti-freeze.
Do not put in more than 60% anti-freeze or
less than 50%. (Refer ...
Cam chain guide inspection
Inspect the cam chain guide in the following procedures:
remove the cam chain guides. Refer to “cam chain guide / cam chain
tensioner removal and installation” .
Check the contacting surface of the cam chain
guides. If it is worn or damaged, replace it with a new
one.
...