NISSAN ALMERA TINO 2001 Service Repair Manual

MODELS WITH FUSE AND FUSIBLE LINK BOX E90NLEC1623S04
YEC927
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Wiring Diagram (Cont'd)
EC-886

Diagnostic ProcedureNLEC1772
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. Turn ignition switch ªONº.
2. Select ªCOOLING FANº in ªACTIVE TESTº mode with CONSULT-II.
3. Touch ªLOWº.
SEF784Z
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-892.)
3 CHECK COOLING FAN HIGH SPEED OPERATION
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªCOOLING FANº in ªACTIVE TESTº mode with CONSULT-II.
3. Touch ªHIGHº.
SEF785Z
4. Make sure that cooling fans-1 and -2 operate at higher speed than low speed.
OK or NG
OK©GO TO 6.
NG©Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-895.)
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure
EC-887

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 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-892.)
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-888

5 CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch ªOFFº.
2. Reconnect cooling fan relay-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 higher speed than low speed.
MEF613EA
OK or NG
OK©GO TO 6.
NG©Check cooling fan high speed control circuit. (Go to PROCEDURE B, EC-895.)
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 7.
NG©Check the following for leak
+Hose
+Radiator
+Water pump
Refer to LC-14, ªWater Pumpº.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-889

7 CHECK RADIATOR CAP
Apply pressure to cap with a tester.
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 8.
NG©Replace radiator cap.
8 CHECK THERMOSTAT
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
SLC343
Valve opening temperature:
82ÉC (180ÉF) [standard]
Valve lift:
More than 9 mm/95ÉC (0.35 in/203ÉF)
3. Check if valve is closed at 5ÉC (9ÉF) below valve opening temperature.
For details, refer to LC-15, ªThermostatº.
OK or NG
OK©GO TO 9.
NG©Replace thermostat
9 CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to ªCOMPONENT INSPECTIONº, EC-699.
OK or NG
OK©GO TO 10.
NG©Replace engine coolant temperature sensor.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-890

10 CHECK MAIN 12 CAUSES
If the cause cannot be isolated, go to ªMAIN 12 CAUSES OF OVERHEATINGº, EC-898.
©INSPECTION END
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-891

PROCEDURE A=NLEC1772S01
1 CHECK POWER SUPPLY
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 2, 3 and ground with CONSULT-II or tester.
SEF899Y
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
+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 MOTOR CIRCUIT FOR OPEN AND SHORT-I
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
SEF780Z
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.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-892

4 CHECK COOLING FAN MOTOR 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 MOTOR CIRCUIT FOR OPEN AND SHORT-III
1. Disconnect cooling fan relay-2.
2. Check harness continuity between cooling fan motor-1 terminal 2 and cooling fan relays-2 terminal 3, cooling fan
relay-2 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.
6 CHECK COOLING FAN RELAY-2
Refer to ªComponent Inspectionº, EC-899.
OK or NG
OK©GO TO 7.
NG©Replace cooling fan relay.
7 CHECK OUTPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 13 and cooling fan relays-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 MALFUNCTION PART
Check the following.
+Harness connectors E76, 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 connectors.
9 CHECK COOLING FAN RELAY-1
Refer to ªComponent Inspectionº, EC-898.
OK or NG
OK©GO TO 10.
NG©Replace cooling fan relay.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-893

10 CHECK COOLING FAN MOTORS-1 AND -2
Refer to ªComponent Inspectionº, EC-899.
OK or NG
OK©GO TO 11.
NG©Replace cooling fan motors.
11 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-670.
©INSPECTION END
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-894

PROCEDURE B=NLEC1772S02
1 CHECK COOLING FAN POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan relays-2 and -3.
SEF384Y
3. Turn ignition switch ªONº.
4. Check voltage between cooling fan relays-2 terminal 1 and ground, cooling fan relay-3 terminals 2, 3 and ground with
CONSULT-II or tester.
SEF903Y
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
+10A fuse
+40A fusible link
+Harness for open or short between cooling fan relays-2 -3 and fuse
+Harness for open or short between cooling fan relay-3 and fusible link
©Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1217 OVERHEAT (COOLING SYSTEM)SR20DE
Diagnostic Procedure (Cont'd)
EC-895