Infiniti QX4 (R50). Manual - part 212
of 2 liters per minute like pouring coolant from a kettle. Be sure
to use coolant with the proper mixture ratio. Refer to MA-12,
“Anti-freeze Coolant Mixture Ratio”.
b)
After refilling coolant, run engine to ensure that no water-flow
noise is emitted.
c)
After checking or replacing coolant, go to step 3 below.
2)
Ask the customer if engine coolant has been added. If it has
been added, go to “Diagnostic Procedure”, EC-316. After
repair, go to the next step.
3)
Start engine and let it idle.
4)
Make sure that A/C switch is “OFF” and air conditioner is not
operating. If NG, check air conditioner circuit. Refer to HA-30
or HA-35, “TROUBLE DIAGNOSES”. After repair, go to the
next step.
5)
Check for blocked coolant passage.
a)
Warm up engine to normal operating temperature, then grasp
radiator upper hose and lower hose and make sure that cool-
ant flows.
If NG, go to “Diagnostic Procedure”, EC-316. After repair, go
to the next step.
Be extremely careful not to touch any moving or adjacent
parts.
6)
Check for blocked radiator air passage.
a)
When market fog lamps have been installed, check for dam-
aged fans and clogging in the condenser and radiator.
b)
Check the front end for clogging caused by insects or debris.
c)
Check for improper fitting of front-end cover, damaged radia-
tor grille or bumper, damaged vehicle front.
If NG, take appropriate action and then go to the next step.
7)
Check function of ECT sensor.
Refer to step 7 of “Diagnostic Procedure”, EC-316.
If NG, replace ECT sensor and go to the next step.
8)
Check ignition timing. Refer to basic inspection, EC-101.
Make sure that ignition timing is 15°
±
5° at idle.
If NG, adjust ignition timing and then recheck.
WITH GST
NBEC0612S02
1)
Check the coolant level and mixture ratio (using coolant tester)
in the reservoir tank and radiator.
Allow engine to cool before checking coolant level and
mixture ratio.
I
If the coolant level in the reservoir and/or radiator is below the
proper range, and go to “Diagnostic Procedure”, EC-316.
I
If the coolant mixture ratio is out of the range of 45 to 55%,
replace the coolant in the following procedure MA-14, “Chang-
ing Engine Coolant”.
a)
Fill radiator with coolant up to specified level with a filling speed
of 2 liters per minute like pouring coolant from a kettle. Be sure
to use coolant with the proper mixture ratio. Refer to MA-12,
“Anti-freeze Coolant Mixture Ratio”.
b)
After refilling coolant, run engine to ensure that no water-flow
noise is emitted.
c)
After checking or replacing coolant, go to step 3 below.
2)
Ask the customer if engine coolant has been added. If it has
been added, go to “Diagnostic Procedure”, EC-316. After
repair, go to the next step.
3)
Start engine and let it idle.
GI
MA
EM
LC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Overall Function Check (Cont’d)
EC-315