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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-318. 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-28,
“TROUBLE DIAGNOSES”. After repair, go to the next step.
5) Turn ignition switch “OFF”
6) Disconnect engine coolant temperature sensor harness con-
nector.
7) Connect 150Ω resistor to engine coolant temperature sensor.
8) Start engine and make sure that cooling fan operates.
Be careful not to overheat engine.
If NG, go to “Diagnostic Procedure”, EC-318. After repair, go
to the next step.
9) 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-318. After repair, go
to the next step.
Be extremely careful not to touch any moving or adjacent
parts.
10) 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.
11) Check function of ECT sensor.
Refer to step 6 of “Diagnostic Procedure”, EC-318.
If NG, replace ECT sensor and go to the next step.
12) Check ignition timing. Refer to basic inspection, EC-109.
Make sure that ignition timing is 15°±2° at idle.
If NG, adjust ignition timing and then recheck.
GI
MA
EM
LC
FE
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0217 COOLANT OVERTEMPERATURE ENRICHMENT PROTECTION
Overall Function Check (Cont’d)
EC-315
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