NISSAN ALMERA TINO 2001 Service Repair Manual

MODELS WITH ECM IN CABINNLEC1880S04
YEC943
REFRIGERANT PRESSURE SENSORSR20DE
Wiring Diagram (Cont'd)
EC-1046

Diagnostic ProcedureNLEC1881
1 CHECK REFRIGERANT PRESSURE SENSOR OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower switch ªONº.
3. Check voltage between ECM terminal 74 and ground with CONSULT-II or tester.
SEF952XA
OK or NG
OK©INSPECTION END
NG©GO TO 2.
2 CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn A/C switch and blower switch ªOFFº.
2. Stop engine.
3. Disconnect refrigerant pressure sensor harness connector.
JEF147Y
4. Turn ignition switch ªONº.
5. Check voltage between refrigerant pressure sensor terminal 3 and ground with CONSULT-II or tester.
SEF953X
OK or NG
OK©GO TO 4.
NG©GO TO 3.
REFRIGERANT PRESSURE SENSORSR20DE
Diagnostic Procedure
EC-1047

3 DETEC TMALFUNCTIONIN GPART
4 CHEC KREFRIGERAN TPRESSUR ESENSO RGROUN DCIRCUIT
5 DETEC TMALFUNCTIONIN GPART
6 CHEC KREFRIGERAN TPRESSUR ESENSO RINPU TSIGNA LCIRCUIT
7 DETEC TMALFUNCTIONIN GPART
8 CHEC KREFRIGERAN TPRESSUR ESENSOR
or HA-74,ªRefrigeran tpressur esensorº.
Diagnostic Procedure (Cont'd)

9 CHECK INTERMITTENT INCIDENT
Refer to ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-670.
©INSPECTION END
REFRIGERANT PRESSURE SENSORSR20DE
Diagnostic Procedure (Cont'd)
EC-1049

CONSULT-II Reference Value in Data Monitor
Mode
NLEC1882Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
LOAD SIGNAL+Ignition switch: ONRear window defogger is operating
and/or lighting switch is on.ON
Rear window defogger is not oper-
ating and lighting switch is not on.OFF
HEATER FAN SW+Ignition switch: ONHeater fan motor is operating. ON
Heater fan motor is not operating. OFF
ECM Terminals and Reference ValueNLEC1883Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
50 L/BElectric load signal
(Load switch)[Ignition switch ªONº]
+Rear window defogger is operating and/or lighting
switch is onBATTERY VOLTAGE
(11 - 14V)
[Ignition switch ªONº]
+Rear window defogger is not operating and lighting
switch is not onApproximately 0V
51 LG/B Heater fan motor switch[Ignition switch ªONº]
+Heater fan motor is operatingApproximately 0V
[Ignition switch ªONº]
+Heater fan motor is not operatingApproximately 5V
ELECTRICAL LOAD SIGNALSR20DE
CONSULT-II Reference Value in Data Monitor Mode
EC-1050

Wiring DiagramNLEC1884MODELS WITH ECM IN ENGINE COMPARTMENTNLEC1884S04
YEC716
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram
EC-1051

YEC717
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1052

MODELS WITH ECM IN CABINNLEC1884S05
YEC945
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1053

YEC946
ELECTRICAL LOAD SIGNALSR20DE
Wiring Diagram (Cont'd)
EC-1054

Diagnostic Procedure Ð Load Signal ÐNLEC1885
1 INSPECTION START
Do you have CONSULT-II?
YesorNo
Ye s©GO TO 2.
No©GO TO 4.
2 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-I
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªLOAD SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF954X
OK or NG
OK©GO TO 3.
NG©GO TO 6.
3 CHECK LOAD SIGNAL CIRCUIT OVERALL FUNCTION-II
With CONSULT-II
1. Turn ignition switch ªONº.
2. Check ªLOAD SIGNALº in ªDATA MONITORº mode with CONSULT-II under the following conditions.
SEF955X
OK or NG
OK©INSPECTION END
NG©GO TO 9.
ELECTRICAL LOAD SIGNALSR20DE
Diagnostic Procedure Ð Load Signal Ð
EC-1055