2001 NISSAN ALMERA diagram

Wiring DiagramNJEC0712SEDAN MODELS AND HATCHBACK MODELS WITH ECM IN ENGINE COMPARTMENTNJEC0712S01
HEC825
DTC P1600 P3´PUMP COMM LINEYD
Wiring Diagram
EC-788

HATCHBACK MODELS WITH ECM IN CABINNJEC0712S02
HEC993
DTC P1600 P3´PUMP COMM LINEYD
Wiring Diagram (Cont'd)
EC-789

4 CHECK COMMUNICATION LINE FOR OPEN AND SHORT
1. Check continuity between the following terminals. Refer to Wiring Diagram.
MTBL0462
Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG
OK©GO TO 5.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
5 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-665.
OK or NG
OK©Replace electronic control fuel injection pump.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1600 P3´PUMP COMM LINEYD
Diagnostic Procedure (Cont'd)
EC-791

Wiring DiagramNJEC0747SEDAN MODELS AND HATCHBACK MODELS WITH ECM IN ENGINE COMPARTMENTNJEC0747S01
HEC839
DTC P1620 ECM RLYYD
Wiring Diagram
EC-795

HATCHBACK MODELS WITH ECM IN CABINNJEC0747S02
HEC994
DTC P1620 ECM RLYYD
Wiring Diagram (Cont'd)
EC-796

Diagnostic ProcedureNJEC0748
1 CHECK ECM POWER SUPPLY CIRCUIT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM relay. (For ECM relay location, refer to ªEngine Control Component Parts Locationº.)
3. Check voltage between ECM terminals 1, 6 and ground with CONSULT-II or tester.
SEF399Y
OK or NG
OK©GO TO 3.
NG©GO TO 2.
2 DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors E75, F36 (Sedan models and hatchback models with ECM in engine compartment)
2. 20A fuse
3. 10A fuse (Hatchback models with ECM in cabin)
4. Harness for open and short between ECM relay and battery
©Repair open circuit or short to ground or short to power in harness or connectors.
3 CHECK ECM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch ªOFFº.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 107, 108, 109 and ECM relay terminal 7. 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 5.
NG©Repair open circuit or short to ground or short to power in harness or connectors.
4 DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors E75, F36 (New H/B)
2. Harness for open and short between ECM and ECM relay
©Repair open circuit or short to ground or short to power in harness or connectors.
DTC P1620 ECM RLYYD
Diagnostic Procedure
EC-797

5 CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 325 and ECM relay terminal 2. 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 6.
6 DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors E174, M159 (New H/B)
2. Harness connectors M63, F102 (New H/B)
3. Harness for open and short between ECM and ECM relay
©Repair open circuit or short to ground or short to power in harness or connectors.
7 CHECK ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between ECM relay terminals 3 and 5, 6 and 7.
SEF296X
OK or NG
OK©GO TO 8.
NG©Replace ECM relay.
8 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-665.
©INSPECTION END
DTC P1620 ECM RLYYD
Diagnostic Procedure (Cont'd)
EC-798

Wiring DiagramNJEC0762
NEF337A
GLOW CONTROL SYSTEMYD
Wiring Diagram
EC-808