2001 NISSAN ALMERA diagram

5 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
SEF609Y
3. Check harness continuity between relay terminal 5 and motor-1 terminal 2, motor-1 terminal 1 and body ground.
Refer to wiring diagram.
Continuity should exist.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between relay terminal 7 and motor-2 terminal 2, motor-2 terminal 1 and body ground.
Refer to wiring diagram.
Continuity should exist.
6. 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 OUTPUT SIGNAL CIRCUIT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 13 and relay terminal 2. 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 8.
NG©GO TO 7.
7 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E75, F36
+Harness for open or short between cooling fan relay and ECM
©Repair open circuit or short to ground or short to power in harness or connectors.
8 CHECK COOLING FAN RELAY
Refer to ªComponent Inspectionº, EC-416.
OK or NG
OK©GO TO 9.
NG©Replace cooling fan relay.
DTC P1217 OVERHEAT (COOLING SYSTEM)QG
Diagnostic Procedure (Cont'd)
EC-412

Wiring DiagramNJEC0346SEDAN MODELS AND HATCHBACK MODELS WITH
ECM IN ENGINE COMPARTMENT
NJEC0346S01
HEC807
DTC P1401 EGR TEMPERATURE SENSOR (WHERE FITTED)QG
Wiring Diagram
EC-421

HATCHBACK MODELS WITH ECM IN CABINNJEC0346S02
HEC962
DTC P1401 EGR TEMPERATURE SENSOR (WHERE FITTED)QG
Wiring Diagram (Cont'd)
EC-422

Diagnostic ProcedureNJEC0347
1 CHECK POWER SUPPLY
1. Turn ignition switch ªOFFº.
2. Disconnect EGR temperature sensor harness connector.
SEF127X
3. Turn ignition switch ªONº.
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.
SEF945X
OK or NG
OK©GO TO 2.
NG©Repair harness or connectors.
2 CHECK GROUND CIRCUIT
1. Turn ignition switch ªOFFº.
2. Check harness continuity between EGR temperature sensor harness terminal 2 and engine ground.
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 4.
NG©GO TO 3.
3 DETECT MALFUNCTIONING PART
Check the following.
+Harness for open or short between EGR temperature sensor and ECM
+Harness for open or short between TCM (Transmission Control Module) and ECM
+Joint connector-3 (If so equipped)
+Joint connector-6 (If so equipped)
©Repair open circuit or short to ground or short to power in harness or connector.
DTC P1401 EGR TEMPERATURE SENSOR (WHERE FITTED)QG
Diagnostic Procedure
EC-423

Wiring DiagramNJEC0352SEDAN MODELS AND HATCHBACK MODELS WITH
ECM IN ENGINE COMPARTMENT
NJEC0352S01
HEC794
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)QG
Wiring Diagram
EC-429

HATCHBACK MODELS WITH ECM IN CABINNJEC0352S02
HEC976
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)QG
Wiring Diagram (Cont'd)
EC-430

Diagnostic ProcedureNJEC0353
1 CHECK POWER SUPPLY
1. Disconnect EGR volume control valve harness connector.
2. Turn ignition switch ªONº.
3. Check voltage between terminals 2, 5 and ground with CONSULT-II or tester.
SEF327X
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
+Harness connectors E75, F36 (If so equipped)
+Harness for open or short between EGR volume control valve and ECM relay
©Repair harness or connectors.
3 CHECK OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between
ECM terminal 8 and terminal 1,
ECM terminal 9 and terminal 4,
ECM terminal 17 and terminal 3,
ECM terminal 18 and terminal 6.
Refer to wiring diagram.
Continuity should exist.
If OK, check harness for short to ground and short to power.
OK or NG
OK©GO TO 4.
NG©Repair open circuit, short to ground or short to power in harness connectors.
4 CHECK EGR TEMPERATURE SENSOR
Refer to ªCOMPONENT INSPECTIONº, EC-432.
OK or NG
OK©GO TO 5.
NG©Replace EGR temperature sensor.
DTC P1402 EGR FUNCTION (OPEN) (WHERE FITTED)QG
Diagnostic Procedure
EC-431

Wiring DiagramNJEC0577
HEC804
DTC P1605 A/T DIAGNOSIS COMMUNICATION LINEQG
Wiring Diagram
EC-435