2003 NISSAN ALMERA N16 relay

TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA(DC Voltage)
221 LG/B Cooling fan relay (High)[Engine is running]
Cooling fans are not operating
Cooling fans are operating at low speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
Cooling fans are operating at high speedApproximately 0.1V
On Board Diagnosis LogicNJEC0663This diagnosis continuously monitors the engine coolant temperature.
If the cooling fan or another component in the cooling system malfunctions, engine coolant temperature will
rise.
When the engine coolant temperature reaches an abnormally high temperature condition, a malfunction is
indicated.
This self-diagnosis has the one trip detection logic.
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1217
0208Cooling fan does not operate properly (Overheat).
Cooling fan system does not operate properly
(Overheat).
Engine coolant was not added to the system using
the proper filling method.Harness or connectors
(The cooling fan circuit is open or shorted.)
Cooling fan
Radiator hose
Radiator
Radiator cap
Water pump
Thermostat
Engine coolant temperature sensor
For more information, refer to “MAIN 12 CAUSES OF
OVERHEATING”, EC-144.
CAUTION:
When a malfunction is indicated, be sure to replace the coolant following the procedure in the LC-43,
“Changing Engine Coolant”. Also, replace the engine oil.
1) Fill radiator with coolant up to specified level with a filling speed of 2liters per minute. Be sure
to use coolant with the proper mixture ratio. Refer to MA-21, “Engine Coolant Mixture Ratio”.
2) After refilling coolant, run engine to ensure that no water-flow noise is emitted.
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DTC P1217 OVER HEATYD
ECM Terminals and Reference Value (Cont’d)
EC-131

4 CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-II
1. Disconnect cooling fan relay-3.
SEF384Y
2. Start engine and let it idle.
3. Set temperature lever at full cold position.
4. Turn air conditioner switch “ON”.
5. Turn blower fan switch “ON”.
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-138.)
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DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-135

5 CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch “OFF”.
2. Reconnect cooling fan relay-3.
3. Turn air conditioner switch and blower fan switch “OFF”.
4. Disconnect engine coolant temperature sensor harness connector.
5. Connect 150Ωresistor 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-141.)
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/cm2,23psi)
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-38, “Water Pump”.)
Repair or replace.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-136

10 CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Remove engine coolant temperature sensor.
2. Check resistance between engine coolant temperature sensor terminals1 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 “MAIN 12 CAUSES OF OVERHEATING”, EC-144.
INSPECTION END
PROCEDURE ANJEC0666S05
1 CHECK COOLING FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan relay-1.
3. Turn ignition switch “ON”.
4. Check voltage between cooling fan relay-1 terminals 2, 3 and ground withCONSULT-II or tester.
SEF899Y
OK or NG
OK GO TO 3.
NG GO TO 2.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-138

2 DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E104
10A fuse
40A fusible link
Harness for open or short between cooling fan relay-1 and fuse
Harness for open or short between cooling fan relay-1 and battery
Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
SEF385Y
3. Check harness continuity between cooling fan relay-1 terminal 5 and cooling fan motor-1 terminal 1, cooling fan
motor-2 terminal 2 and body ground. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 4.
NG Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Check harness continuity between cooling fan motor-1 terminal 2 and cooling fan motor-2 terminal 1. Refer to Wiring
Diagram.
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 7.
NG GO TO 5.
5 CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT-III
1. Disconnect cooling fan relays-2, 4.
2. Check harness continuity between cooling fan motor-1 terminal 2 and cooling fan relays-2, 4 terminal 3, cooling fan
relays-2, 4 terminal 4 and cooling fan motor-2 terminal 1. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 6.
NG Repair open circuit or short to ground or short to power in harness or connectors.
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DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-139

6 CHECK COOLING FAN RELAY-2, 4
Check continuity between cooling fan relays-2, 4 terminals 3 and 4, 3 and 5 under the following conditions.
SEF900Y
OK or NG
OK GO TO 11.
NG Replace cooling fan relay.
7 CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 219 and cooling fan relay-1 terminal 1. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 9.
NG GO TO 8.
8 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E75, F36
Harness for open or short between cooling fan relay-1 and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
9 CHECK COOLING FAN RELAY-1
Check continuity between cooling fan relay-1 terminals 3 and 5 under the following conditions.
SEF901Y
OK or NG
OK GO TO 10.
NG Replace cooling fan relay.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-140

10 CHECK COOLING FAN MOTORS-1 AND -2
Supply battery voltage between the following terminals and check operation.
YEC059A
OK or NG
OK GO TO 11.
NG Replace cooling fan motors.
11 CHECK INTERMITTENT INCIDENT
Perform “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-71.
INSPECTION END
PROCEDURE BNJEC0666S06
1 CHECK COOLING FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan relays-2, 3 and 4.
SEF384Y
3. Turn ignition switch “ON”.
4. Check voltage between cooling fan relays-2, 4 terminals 1 and ground, cooling fan relay-3 terminals 2, 3 and ground
with CONSULT-II or tester.
YEC394A
OK or NG
OK GO TO 3.
NG GO TO 2.
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DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-141

2 DETECT MALFUNCTIONING PART
Check the following.
30A fusible link
10A fuse
Harness for open or short between cooling fan relays-2, 3, 4 and fuse
Harness for open or short between cooling fan relay-3 and fusible link
Repair harness or connectors.
3 CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan motor-2 harness connector.
SEF385Y
3. Check harness continuity between cooling fan relays-2, 4 terminal 5 andbody ground, cooling fan relay-3 terminal 5
and cooling fan motor-2 terminal 1. Refer to Wiring Diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 4.
NG Repair open circuit or short to ground or short to power in harness or connectors.
4 CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 221 and cooling fan relays-2, 4 terminal 2, cooling fan relay-3 terminal
1. Refer to Wiring Diagram.
Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
OK GO TO 6.
NG GO TO 5.
5 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E75, F36
Harness for open or short between cooling fan relays-2, 3, 4 and ECM
Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1217 OVER HEATYD
Diagnostic Procedure (Cont’d)
EC-142