2001 NISSAN ALMERA N16 Electronic Repair Manual

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Page 961 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Diagnostic ProcedureNJEC0671
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation

Page 962 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual ECM Terminals and Reference ValueNJEC0744Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output

Page 963 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Wiring DiagramNJEC0747
YEC018A
DTC P1620 ECM RLYYD
Wiring Diagram
EC-667

Page 964 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 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.)

Page 965 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual 6 DETECT MALFUNCTIONING PART
Check the following.
1. Harness connectors E174, M159
2. Harness connectors M63, F102
3. Harness for open and short between ECM and ECM relay
©Repair open circuit or shor

Page 966 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual SEC220B
DescriptionNJEC0749The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the engine.
On Board Diagnosis LogicNJEC0750
DTC Malfu

Page 967 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual Diagnostic ProcedureNJEC0752
1 INSPECTION START
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªSELF DIAG RESULTSº mode with CONSULT-II.
3. Touch ªERASEº.
4. Perform ªDTC Confirmation

Page 968 of 2493

NISSAN ALMERA N16 2001 Electronic Repair Manual On Board Diagnosis LogicNJEC1258The ECM checks if battery voltage is within the tolerance range for the engine control system.
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1660
0

On Board Diagnosis LogicNJEC1258The ECM checks if battery voltage is within the tolerance range for the engine control system.
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1660
0502+An abnormally high or low voltage from the battery
is sent to ECM.+Incorrect jump starting
+Battery
+Alternator
+ECM
DTC Confirmation ProcedureNJEC1259With CONSULT-II
1) Check the following.
+Jumper cables are connected for jump starting.
+Battery or alternator has been replaced.
If the result is ªYesº for one item or more, skip the following steps and go to ªDiagnostic Procedureº,
EC-672.
2) Check that the positive battery terminal is connected to battery properly. If NG, reconnect it properly.
3) Check that the alternator functions properly. Refer to SC-26, ªTrouble Diagnosisº.
4) Turn ignition switch ªONº and select ªDATA MONITORº mode with CONSULT-II.
5) Wait one minute.
6) If DTC is detected, go to ªDiagnostic Procedureº, EC-672.
If DTC is not detected, go to next step.
7) Start engine and wait one minute at idle.
8) If DTC is detected, go to ªDiagnostic Procedureº, EC-672.
Without CONSULT-II
1) Check the following.
+Jumper cables are connected for jump starting.
+Battery or alternator has been replaced.
If the result is ªYesº for one item or more, skip the following steps and go to ªDiagnostic Procedureº,
EC-672.
2) Check that the positive battery terminal is connected to battery properly. If NG, reconnect it properly.
3) Check that the alternator functions properly. Refer to SC-26, ªTrouble Diagnosisº.
4) Turn ignition switch ªONº and wait one minute.
5) Turn ignition switch ªOFFº, wait 5 seconds and then turn ªONº.
6) Perform ªDiagnostic Test Mode II (Self-diagnostic result)º with ECM.
7) If DTC is detected, go to ªDiagnostic Procedureº, EC-672.
If DTC is not detected, go to next step.
8) Start engine and wait one minute at idle.
9) Turn ignition switch ªOFFº, wait 5 seconds and then turn ªONº.
10) Perform ªDiagnostic Test Mode II (Self-diagnostic result)º with ECM.
11) If DTC is detected, go to ªDiagnostic Procedureº, EC-672.
Diagnostic ProcedureNJEC1260
1 INSPECTION START
Are jumper cables connected for the jump starting?
YesorNo
Ye s©GO TO 3.
No©GO TO 2.
DTC P1660 BATTERY VOLTAGEYD
On Board Diagnosis Logic
EC-672

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