1999 INFINITI QX4

Infiniti QX4 1999 - BUZZERS, RELAYS & TIMERS

Infiniti QX4 1999 BUZZERS, RELAYS & TIMERS

Component	Component Location
ABS Relay Unit	On right side of engine compartment.
A/C Relay	In relay box No. 1. See Fig. 3 .
Accessory Relay	On fuse block. See Fig. 5 .
ASCD Hold Relay	In relay box No. 1. See Fig. 3 .
Audio Amplifier Relay	Behind left kick panel. See Fig. 6 .
Blower Motor Relay	On fuse block. See Fig. 5 .
Door Mirror Defogger Relay	In relay box No. 1. See Fig. 3 .
ECCS Relay	In relay box No. 2. See Fig. 4 .
Front Foglight Relay	In relay box No. 1. See Fig. 3 .
Fuel Pump Relay	In relay box No. 2. See Fig. 4 .
Glass Hatch Opener Relay	Behind left luggage room trim.
Horn Relay	In relay box No. 1. See Fig. 3 .
Ignition Relay	On fuse block. See Fig. 5 .
Inhibitor Relay	In relay box No. 2. See Fig. 4 .
Multi-Remote Control Relay	In relay box No. 1. See Fig. 3 .
Power Socket Relay	In relay box No. 1. See Fig. 3 .
Power Window Relay	On top of fuse block. See Fig. 5 .
Rear Window Defogger Relay	In relay box No. 1. See Fig. 3 .
Rear Wiper Relay	Behind left luggage room trim.
Theft Warning Horn Relay	In relay box No. 1. See Fig. 3 .
Theft Warning Light Relay	In relay box No. 1. See Fig. 3 .
Theft Warning Relay	In relay box No. 1. See Fig. 3 .
Transfer Indicator Light Relay	In relay box No. 2. See Fig. 4 .
Transfer Motor Relay	On left side of engine compartment, behind relay box No. 1. See Fig. 2 .
Warning Chime	On right rear of instrument cluster.

Infiniti QX4 1999 - CIRCUIT PROTECTION DEVICES

Infiniti QX4 1999 CIRCUIT PROTECTION DEVICES

Component	Component Location
Circuit Breaker No. 1	On top of fuse block. See Fig. 5 .
Circuit Breaker No. 2	On top of fuse block. See Fig. 5 .
Fuse Block	Behind dash, left of steering column. See Fig. 6 .
Fuses (Engine Compartment)	In relay box No. 2. See Fig. 4 .
Fuses (Passenger Compartment)	In fuse block.
Fusible Link	In relay box No. 2. See Fig. 4 .
Relay Box No. 1	On left front fender well. See Fig. 2 .
Relay Box No. 2	On right front fender well. See Fig. 2 .

Infiniti QX4 1999 - CONTROL UNITS

Infiniti QX4 1999 CONTROL UNITS

Component	Component Location
ABS Control Unit	Below center of dash, forward of center console. See Fig. 6 .
A/C Auto Amplifier	Behind center of dash.
Air Bag Diagnosis Sensor Unit	Below rear of center console. See Fig. 6 .
ASCD Control Unit	Behind left kick panel. See Fig. 6 .
A/T Device	At base of selector lever.
Combination Flasher Unit	Behind left side of dash. See Fig. 6 .
Daytime Light Control Unit (Canada)	On right front fender well. See Fig. 2 .
ECCS Control Module (ECM)	Behind center of dash. See Fig. 6 .
Fan Control Amplifier	Behind glove box.
Front Wiper Amplifier	On right rear corner of engine compartment. See Fig. 2 .
Rear Speaker Amplifier	Behind left luggage room trim.
Rear Wiper Amplifier	Behind left luggage room trim.
Smart Entrance Control Unit	Behind dash, next to fuse block. See Fig. 6 .
Transmission Control Module (TCM)	Behind dash, left of steering column. See Fig. 6 .

Infiniti QX4 1999 - MOTORS

Infiniti QX4 1999 MOTORS

Component	Component Location
ABS Actuator	On right side of engine compartment. See Fig. 2 .
Air Mix Door Motor	Behind center of dash, on bottom of heater unit.
ASCD Pump	On right front fender well. See Fig. 2 .
Blower Motor	Below right side of dash.
Front Wiper Motor	On right side of firewall. See Fig. 2 .
Fuel Pump	In fuel tank.
Intake Door Motor	Behind glove box, on heater intake unit.
Mode Door Motor	Behind center of dash, on heater unit.
Power Antenna	On right front fender.
Rear Wiper Motor	On lower right side of hatch.
Sun Roof Motor	At front of sun roof opening.
Transfer Motor	On left rear of transfer case.
Washer Motor (Front)	On washer fluid reservoir.
Washer Motor (Rear)	On washer fluid reservoir.

Infiniti QX4 1999 - SENDING UNITS & SENSORS

Infiniti QX4 1999 SENDING UNITS & SENSORS

Component	Component Location
Absolute Pressure Sensor	On left front fender well, near air cleaner box. See Fig. 1 .
Ambient Air Temperature Sensor (Thermometer)	Center front of engine compartment.
Ambient Sensor	Center front of engine compartment.
Camshaft Position Sensor	In distributor. See Fig. 1 .
Crankshaft Position Sensor (OBD)	On transmission housing, facing flywheel gear teeth. See Fig. 1 .
EGR Temperature Sensor	On left rear of engine. See Fig. 1 .
Engine Coolant Temperature Sensor	On top front of engine. See Fig. 1 .
EVAP Control System Pressure Sensor	Left rear underside of vehicle, near fuel tank.
Fuel Tank Gauge Unit	On top of fuel tank.
"G" Sensor	Below rear of center console. See Fig. 6 .
Heated Oxygen Sensor (Left Front)	On left exhaust manifold. See Fig. 1 .
Heated Oxygen Sensor (Left Rear)	Behind left catalytic converter, on front tube.
Heated Oxygen Sensor (Right Front)	On right exhaust manifold. See Fig. 1 .
Heated Oxygen Sensor (Right Rear)	Behind right catalytic converter, on front tube.
Intake Air Temperature Sensor	On lower left front of engine compartment, in air duct housing. See Fig. 1 .
Intake Sensor	Behind center of dash, on cooling unit.
In-Vehicle Sensor	Attached to instrument lower cover, right of steering column.
Knock Sensor	On top rear of engine. See Fig. 1 .
Mass Airflow (MAF) Sensor	On air intake assembly, near air cleaner box. See Fig. 1 .
Revolution Sensor (Front)	On left front of transfer case.
Revolution Sensor (Rear)	On top rear of transmission.
Sunload Sensor	On center defroster grille.
Thermal Transmitter	On top front of engine.
Throttle Position Sensor	On throttle body. See Fig. 1 .
Vehicle Speed Sensor	On left side of transmission.
Wheel Speed Sensors (4)	On inside of respective wheel.

Infiniti QX4 1999 - SOLENOIDS & SOLENOID VALVES

Infiniti QX4 1999 SOLENOIDS & SOLENOID VALVES

Component	Component Location
EGRC Solenoid Valve	On left front of engine. See Fig. 1 .
EVAP Canister Purge Volume Control Solenoid Valve	On left rear of engine. See Fig. 1 .
EVAP Canister Vent Control Valve	Left rear underside of vehicle, near fuel tank.
IACV-AAC Valve	On left rear of engine. See Fig. 1 .
IACV-FICD Solenoid Valve	On left rear of engine. See Fig. 1 .
MAP/BARO Switch Solenoid Valve	On left front fender well, near air cleaner box. See Fig. 1 .
Shift Lock Solenoid	Integral to A/T device.
Vacuum Cut Valve By-Pass Valve	Left rear underside of vehicle, near fuel tank.

Infiniti QX4 1999 - SWITCHES

Infiniti QX4 1999 SWITCHES

Component	Component Location
Ambient Air Temperature Switch	Center front of engine compartment.
ASCD Brake Switch	On bracket, above brake pedal.
ATP Switch	On left rear of transfer case.
Brake Fluid Level Switch	On brake fluid reservoir.
Dual Pressure Switch	Right front of engine compartment, on A/C liquid tank.
Hood Switch	On left front of engine compartment. See Fig. 2 .
Inhibitor Switch	On right side of transmission.
Neutral-4Lo Switch	On left rear of transfer case.
Oil Pressure Switch	On lower left front of engine.
Park Position Switch	Integral to A/T device.
Parking Brake Switch	At base of park brake lever.
Power Steering Pressure Switch	Lower right front of engine compartment, on power steering high pressure tube. See Fig. 1 .
Seat Belt Buckle Switch	In driver's seat belt buckle.
Stoplight Switch	On bracket, above brake pedal.
Throttle Position Switch	Integral to throttle position sensor. See Fig. 1 .
Wait Detection Switch	On left front of transfer case.
Washer Level Switch	Lower right front of engine compartment.
4WD Switch	On right side of transfer case.

Infiniti QX4 1999 - MISCELLANEOUS

Infiniti QX4 1999 MISCELLANEOUS

Component	Component Location
Condenser (Ignition)	On top of engine, near distributor. See Fig. 1 .
Data Link Connector (DLC) (CONSULT)	On lower dash panel, left of steering column.
Data Link Connector (DLC) (GST)	On lower left dash panel.
Diode (A/T)	Behind left side of dash.
Diode (Brake Indicator)	Upper left kick panel, taped to harness.
Diode (Door Switch)	Behind left kick panel.
Diode (Glass Hatch Opener Relay)	Behind left kick panel.
Diode (Glass Hatch Switch)	Behind left kick panel.
Diode (IACV-FICD Solenoid Valve)	Behind center of dash, taped to harness.
Diode (Inhibitor Switch)	Behind left side of dash.
Diode (Interior Light)	Behind right side of dash.
Diode (Rear Wiper)	Behind left luggage room trim.
Diode (Recirculation Switch)	Behind center of dash.
Dropping Resistor (A/T)	On right side of engine compartment, near battery.
Dropping Resistor (Transfer)	On right side of engine compartment, between battery & inner fender.
Ignition Coil	In distributor. See Fig. 1 .
Injectors (6)	On top of engine. See Fig. 1 .
Power Transistor	In distributor. See Fig. 1 .
Resistor (Ignition)	On top of engine, near distributor. See Fig. 1 .
Theft Warning Horn	On right front fender well. See Fig. 2 .

Infiniti QX4 1999 - CONNECTORS

Infiniti QX4 1999 CONNECTORS

Component	Component Location
B1 (SMJ)	At left end of dash.
B4 (White, 2-Pin)	Under center console.
B10 (White, 10-Pin)	At left "B" pillar.
B23 (White, 12-Pin)	Above left taillight assembly.
B24 (White, 6-Pin)	Above left taillight assembly.
B25 (White, 4-Pin)	Above left taillight assembly.
B40 (White, 2-Pin)	Under center console.
B43 (Gray, 8-Pin)	Under left rear of vehicle.
B50 (White, 20-Pin)	At right kick panel.
B51 (White, 24-Pin)	At right kick panel.
B52 (White, 16-Pin)	At right kick panel.
B70 (White, 10-Pin)	At right "B" pillar.
B77 (White, 12-Pin)	At right kick panel.
B78 (Gray, 8-Pin)	At right side of transfer case.
B79 (Black, 4-Pin)	At right side of transfer case.
B80 (Black, 8-Pin)	At right side of transfer case.
B101 (White, 8-Pin)	At left "B" pillar.
B151 (Gray, 2-Pin)	Under left rear of vehicle.
B152 (Gray, 2-Pin)	Under left rear of vehicle.
B206 (Gray, 8-Pin)	At right side of transfer case.
B207 (Black, 8-Pin)	At right side of transfer case.
B208 (Black, 4-Pin)	At right side of transfer case.
D3 (White, 16-Pin)	At left lower "B" pillar.
D4 (White, 10-Pin)	At left lower "B" pillar.
D11 (Brown, 4-Pin)	At left lower "B" pillar.
D33 (White, 12-Pin)	At right lower "B" pillar.
D34 (White, 6-Pin)	At right lower "B" pillar.
D41 (Brown, 6-Pin)	At right lower "B" pillar.
D50 (White, 10-Pin)	At left lower "B" pillar.
D70 (White, 10-Pin)	At right lower "B" pillar.
D100 (White, 12-Pin)	Above left taillight assembly.
D101 (White, 6-Pin)	Above left taillight assembly.
D102 (White, 4-Pin)	Above left taillight assembly.
D105 (White, 12-Pin)	At left side of tailgate.
D106 (White, 4-Pin)	At left side of tailgate.
D107 (White, 2-Pin)	At left top of tailgate.
D108 (White, 1-Pin)	At left top of tailgate.
D205 (White, 12-Pin)	At left side of tailgate.
D206 (White, 4-Pin)	At left side of tailgate.
D300 (White, 2-Pin)	At left top of tailgate.
D301 (White, 1-Pin)	At left top of tailgate.
E1 (SMJ)	At left end of dash.
E48 (Gray, 4-Pin)	At right side of engine compartment.
E49 (Gray, 1-Pin)	At right side of engine compartment.
E102 (Gray, 4-Pin)	At right side of engine.
E104 (Gray, 1-Pin)	At right side of engine.
F5 (Gray, 8-Pin)	At left side of engine.
F6 (Black, 8-Pin)	At left side of engine.
F14 (Gray, 2-Pin)	At left side of engine.
F22 (Gray, 16-Pin)	At rear of engine compartment.
F23 (White, 24-Pin)	At rear of engine compartment.
F27 (White, 18-Pin)	At rear of engine compartment.
F28 (Black, 4-Pin)	At right rear of engine compartment.
F100 (Gray, 8-Pin)	At left side of engine.
F101 (Black, 8-Pin)	At left side of engine.
F112 (Black, 4-Pin)	At right rear of engine compartment.
F200 (Gray, 2-Pin)	At left front of engine compartment.
M1 (SMJ)	At left end of dash.
M2 (SMJ)	At left end of dash.
M5 (White, 16-Pin)	At left end of dash.
M6 (White, 10-Pin)	At left end of dash.
M32 (White, 24-Pin)	At center of dash.
M33 (Gray, 16-Pin)	At center of dash.
M47 (White, 12-Pin)	At right side of dash.
M62 (White, 6-Pin)	At base of right "A" pillar.
M63 (White, 6-Pin)	At base of right "A" pillar.
M67 (White, 16-Pin)	At right end of dash.
M68 (White, 6-Pin)	At right end of dash.
M70 (White, 20-Pin)	At right kick panel.
M71 (White, 24-Pin)	At right kick panel.
M72 (White, 16-Pin)	At right kick panel.
M94 (White, 18-Pin)	At center of dash.
M97 (Brown, 4-Pin)	At left end of dash.
M99 (White, 12-Pin)	At right kick panel.
M101 (Brown, 6-Pin)	At right end of dash.
R1 (White, 6-Pin)	At base of right "A" pillar.
R2 (White, 6-Pin)	At base of right "A" pillar.
Z1 (White, 12-Pin)	At upper center of dash.

Infiniti QX4 1999 - GROUNDS

Infiniti QX4 1999 GROUNDS

Component	Component Location
B11	Under left kick panel.
B22	At lower rear of left rear quarterpanel.
B55	At right kick panel.
B75	At lower rear of right rear quarterpanel.
D210	At lower right of tailgate.
D305	At upper right of tailgate.
E13	At left front of engine compartment. See Fig. 2 .
E41	At right front of engine compartment. See Fig. 2 .
E101	Under fuse & fusible link box.
F20	At rear of engine. See Fig. 2 .
F25	At rear of engine. See Fig. 2 .
M4	At left end of dash. See Fig. 6 .
M66	At right end of dash. See Fig. 6 .
M77	Near front wiper motor. See Fig. 2 .
M95	At left front center console support. See Fig. 6 .