Page 15 of 229
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
Page 33 of 229
Wiring Diagram Ð POWER Ð
BATTERY POWER SUPPLY Ð IGNITION SWITCH IN ANY POSITION
GEL359A
POWER SUPPLY ROUTING
EL-4004
Page 36 of 229
ACCESSORY POWER SUPPLY Ð IGNITION SW. IN ªACCº OR ªONº
GEL362A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-4007
Page 37 of 229
IGNITION POWER SUPPLY Ð IGNITION SW. IN ªONº AND/OR ªSTARTº
GEL600A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-4008
Page 103 of 229
Use the chart below to find out what each wiring diagram code
stands for.
Refer to the wiring diagram code in the alphabetical index to find
the location (page number) of each wiring diagram.
Code Section Wiring Diagram Name
AAC/V EC IACV-AAC Valve
A/C, A HA Auto Air Conditioner
A/C, M HA Manual Air Conditioner
A/CCUT EC Air Conditioner Control
AIRREG EC IACV-Air Regulator
AUDIO EL Audio
BACK/L EL Back-up Lamp
CHIME EL Warning Chime
CMPS EC Camshaft Position Sensor
COOL/F LC, EC Cooling Fan Control
ECTS ECEngine Coolant Temperature
Sensor
F/FOG EL Front Fog Lamp
FICD EC IACV-FICD Solenoid Valve
F/PUMP EC Fuel Pump
GLOW EC Quick-glow System
H/AIM EL Headlamp Aiming Control
IGNSYS EC Ignition Signal
ILL EL Illumination
INJECT EC Injector
KS EC Knock Sensor
LOAD EC Electric Load Signal
MAFS EC Mass Air Flow SensorCode Section Wiring Diagram Name
MAIN ECMain Power Supply and Ground Cir-
cuit
METER ELSpeedometer, Tachometer, Temp.
and Fuel Gauges
MIL/DL EC MIL and Data Link Connectors
NATS EL Nissan Anti-theft System
O2H1B1 EC Heated Oxygen Sensor 1 Heater
O2H2B1 EC Heated Oxygen Sensor 2 Heater
O2S1B1 EC Heated Oxygen Sensor 1
O2S2B1 EC Heated Oxygen Sensor 2
PGC/V ECEVAP Canister Purge
Control Solenoid Valve
PNP/SW EC Park/Neutral Position Switch
POWER EL Power Supply Routing
PST/SW EC Power Steering Oil Pressure Switch
R/FOG EL Rear Fog Lamp
ROOM/L EL Interior Room Lamp
SRS RS Supplemental Restraint System
S/SIG EC Start Signal
TAIL/L EL Parking, License and Tail Lamps
TPS EC, AT Throttle Position Sensor
VSS EC Vehicle Speed Sensor
WARN EL Warning Lamps
WIRING DIAGRAM CODES (CELL CODES)
EL-4074
Page 159 of 229
Wiring Diagram Ð POWER Ð
BATTERY POWER SUPPLY Ð IGNITION SWITCH IN ANY POSITION
GEL359A
POWER SUPPLY ROUTING
EL-4004
Page 162 of 229
ACCESSORY POWER SUPPLY Ð IGNITION SW. IN ªACCº OR ªONº
GEL362A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-4007
Page 163 of 229
IGNITION POWER SUPPLY Ð IGNITION SW. IN ªONº AND/OR ªSTARTº
GEL600A
POWER SUPPLY ROUTING
Wiring Diagram Ð POWER Ð (Cont'd)
EL-4008
