 DTC DETECTION LOGIC
NOTE:
If DTC P0116 is displayed with P0117 or P0118, first perform the trouble diagnosis for DTC P0117, P0118. Refer to DTC Logic (GT-R certified NISSAN dealer).
DTC No.
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Trouble diagnosis name
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DTC detecting condition
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Possible cause
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P0116
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Engine coolant temperature sensor circuit range/performance
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Engine coolant temperature signal from engine coolant temperature sensor does not fluctuate, even when some time has passed after starting the engine with pre-warming up condition.
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- Harness or connectors
(High or low resistance in the circuit)
- Engine coolant temperature sensor
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 DTC CONFIRMATION PROCEDURE
 1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test. - Turn ignition switch OFF and wait at least 10 seconds.
- Turn ignition switch ON.
- Turn ignition switch OFF and wait at least 10 seconds.
TEST CONDITION:Before performing the following procedure, do not fill with the fuel. >>GO TO 2.
 2.PERFORM DTC CONFIRMATION PROCEDURE
- Start engine and warm it up to normal operating temperature.
- Rev engine up to 2,000 rpm for more than 10 minutes.
- Move the vehicle to a cool place, then stop engine and turn ignition switch OFF.
- Check resistance between “fuel level sensor unit and fuel pump (main)” terminals 1 and 3.
- Soak the vehicle until the resistance between “fuel level sensor unit and fuel pump (main)” terminals 1 and 5 becomes 0.5 kΩ higher than the value measured before soaking.
■ CAUTION ■ Never turn ignition switch ON during the soaking time.
NOTE: Soak time changes depending on ambient air temperature. It may take several hours.
- Start engine and let it idle for 5 minutes.
- Check 1st trip DTC.
Is 1st trip DTC detected?
YES >>Diagnosis Procedure (GT-R certified NISSAN dealer)NO >>INSPECTION END
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