2003 NISSAN PICK-UP Repair Manual

IACV-FICD Solenoid Valve
FOR LHD MODELS
GEC301A
TROUBLE DIAGNOSIS FOR NON-DETECTABLE ITEMSKA24DE
EC-4005

Circuit Diagram
GEC388A
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM
KA24DE (EURO OBD)
EC-4006

Wiring Diagram
MODEL WITH MANUAL AIR CONDITIONER
GEC389A
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
EC-4007

MODEL WITH AUTO AIR CONDITIONER
GEC390A
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Wiring Diagram (Cont'd)
EC-4008

Diagnostic Procedure
1 CHECK OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
700 50 rpm
If NG, adjust idle speed.
3. Push air conditioner switch ON and turn fan switch to 4-speed.
4. Recheck idle speed.
MEF634E850 rpm or more
OK or NG
OKcINSPECTION END
NGcGO TO 2.
2 CHECK AIR CONDITIONER FUNCTION
Check if air conditioner compressor functions normally.
OK or NG
OKcGO TO 3.
NGcRefer to ªSymptom Tableº in ªTROUBLE DIAGNOSISº, HA section.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
EC-4009

3 CHECK POWER SUPPLY
1. Stop engine.
2. Disconnect IACV-FICD solenoid valve harness connector.
SEF342V3. Start engine, then push A/C switch ON and turn fan switch to 4-speed.
4. Check voltage between terminal 1 and ground with CONSULT-II or tester.
SEC281DVoltage: Battery voltage
OK or NG
OKcGO TO 5.
NGcGO TO 4.
4 DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E101, M5
Harness for open or short between IACV-FICD solenoid valve and air conditioner relay
Repair open circuit, short to ground or short to power in harness or connectors.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure (Cont'd)
EC-4010

5 CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check harness continuity as follows.
MTBL1755
Continuity should exist.
3. Also check harness for short to ground or short to power.
OK or NG
OKcGO TO 7.
NGcGO TO 6.
6 DETECT MALFUNCTIONING PART
MANUAL AIR CONDITIONER
Check the following.
IACV-FICD solenoid valve
Ambient temperature switch
Diode M53
Harness connectors M5, E101
Check the harness for open or short between air conditioner relay and ambient temperature switch
Check the harness for open or short between diode M53 and ECM
Check the harness for open or short between ambient temperature switch and ECM
Check the harness for open or short between ambient temperature switch and ground
AUTO AIR CONDITIONER
Check the following.
Harness connectors E101, M5
IACV-FICD solenoid valve
Diode M83
Check the harness for open or short between air conditioner relay and ECM
Check the harness for open or short between diode M83 and A/C auto amp
Check the harness for open or short between A/C auto amp and ECM
cRepair open circuit or short to power in harness or connectors.
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure (Cont'd)
EC-4011

7 CHECK IACV-FICD SOLENOID VALVE
Disconnect IACV-FICD solenoid valve harness connector.
SEF610YCheck for clicking sound when applying 12V direct current to terminals.
Check plunger for seizing or sticking.
Check for broken spring.
SEC953D
OK or NG
OKcGO TO 8.
NGcReplace IACV-FICD solenoid valve.
8 CHECK AMBIENT AIR TEMPERATURE SWITCH
Refer to HA section, ªTROUBLE DIAGNOSISº.
OK or NG
OKcGO TO 9.
NGcReplace ambient air temperature switch.
9 CHECK INTERMITTENT INCIDENT
Perform ªTROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENTº, EC-192 in Service Manual (Pub. No. SM1E-1D22FG1).
cINSPECTION END
IACV-FICD SOLENOID VALVEKA24DE (EURO OBD)
Diagnostic Procedure (Cont'd)
EC-4012