Page 1457 of 2898
Wiring DiagramNJEC0665SEDANNJEC0665S01
HEC827
DTC P1217 OVER HEATYD
Wiring Diagram
EC-733
Page 1458 of 2898
HATCHBACKNJEC0665S02
NEF336A
DTC P1217 OVER HEATYD
Wiring Diagram (Cont'd)
EC-734
Page 1459 of 2898
Diagnostic ProcedureNJEC0666SEDANNJEC0666S03
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 4.
2 CHECK COOLING FAN LOW SPEED OPERATION
With CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
SEF384Y
2. Turn ignition switch ªONº.
3. Perform ªCOOLING FANº in ªACTIVE TESTº mode with CONSULT-II.
SEF646X
4. Make sure that cooling fans-1 and -2 operate at low speed.
OK or NG
OK©GO TO 3.
NG©Check cooling fan low speed control circuit. (Go to PROCEDURE A, EC-740.)
DTC P1217 OVER HEATYD
Diagnostic Procedure
EC-735
Page 1460 of 2898
3 CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-II
1. Turn ignition switch ªOFFº.
2. Reconnect cooling fan relays-2 and -3.
3. Turn ignition switch ªONº.
4. Perform ªCOOLING FANº in ªACTIVE TESTº mode with CONSULT-II.
SEF111X
5. Make sure that cooling fans-1 and -2 operate at high speed.
OK or NG
OK©GO TO 6.
NG©Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-743.)
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont'd)
EC-736
Page 1461 of 2898
4 CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-II
1. Disconnect cooling fan relays-2 and -3.
SEF384Y
2. Start engine and let it idle.
3. Set temperature lever at full cold position.
4. Turn air conditioner switch ªONº.
5. Turn blower fan switch ªONº.
6. Make sure that cooling fans-1 and -2 operate at low speed.
SEC163BA
OK or NG
OK©GO TO 5.
NG©Check cooling fan low speed control circuit. (Go to PROCEDURE A, EC-740.)
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont'd)
EC-737
Page 1462 of 2898

5 CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch ªOFFº.
2. Reconnect cooling fan relays-2 and -3.
3. Turn air conditioner switch and blower fan switch ªOFFº.
4. Disconnect engine coolant temperature sensor harness connector.
5. Connect 150Wresistor to engine coolant temperature sensor harness connector.
6. Restart engine and make sure that cooling fans-1 and -2 operate at high speed.
MEC475B
OK or NG
OK©GO TO 6.
NG©Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-743.)
6 CHECK COOLING SYSTEM FOR LEAK
Apply pressure to the cooling system with a tester, and check if the pressure drops.
Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm2, 23 psi)
CAUTION:
Higher than the specified pressure may cause radiator damage.
SLC754A
Pressure should not drop.
OK or NG
OK©GO TO 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following for leak.
+Hose
+Radiator
+Water pump (Refer to LC-39, ªWater Pumpº.)
©Repair or replace.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont'd)
EC-738
Page 1463 of 2898
8 CHECK RADIATOR CAP
Apply pressure to cap with a tester and check radiator cap relief pressure.
SLC755A
Radiator cap relief pressure:
59 - 98 kPa (0.59 - 0.98 bar, 0.6 - 1.0 kg/cm2,9-14psi)
OK or NG
OK©GO TO 9.
NG©Replace radiator cap.
9 CHECK THERMOSTAT
1. Remove thermostat.
2. Check valve seating condition at normal room temperatures.
It should seat tightly.
3. Check valve opening temperature and valve lift.
SLC343
Valve opening temperature:
82ÉC (180ÉF) [standard]
Valve lift:
More than 8.6 mm/95ÉC (0.339 in/203ÉF)
4. Check if valve is closed at 5ÉC (9ÉF) below valve opening temperature. For details, refer to LC-41, ªThermostatº.
OK or NG
OK©GO TO 10.
NG©Replace thermostat.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont'd)
EC-739
Page 1464 of 2898
10 CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Remove engine coolant temperature sensor.
2. Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure.
SEF304X
OK or NG
OK©GO TO 11.
NG©Replace engine coolant temperature sensor.
11 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-756.
©INSPECTION END
Procedure ANJEC0666S0301
1 CHECK COOLING FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan relay-1.
3. Turn ignition switch ªONº.
4. Check voltage between cooling fan relay-1 terminals 1, 3, 6 and ground with CONSULT-II or tester.
SEF590X
OK or NG
OK©GO TO 3.
NG©GO TO 2.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont'd)
EC-740