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1990 Mazda 323 CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Mazda REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
A/C & Cooling System Maintenance -> Mazda -> 1990-2002 Miata, Millenia, Protege, 323, MX-3, MX-6, 626, RX-7 & 929
Vehicle: 1990 Mazda 323 SE 1.6 L4 GAS
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BRAKE SERVICE PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Anti-Lock Brakes -> COMPONENT TESTING -> 1990-91 MX-6 & 626 -> 1992 MX-6 & 626 -> 929 -> ABS Diode -> ABS Fail Safe Relay -> ABS Motor Relay -> ABS Relay -> ABS Warning Light -> Anti-Lock Warning Light -> Brake Light Switch -> Check Motor At Hydraulic Unit -> Check Solenoid Valve A Hydraulic Unit -> Checking ABS System -> Control Unit -> Front & Rear Valves -> Hydraulic System -> Left Front & Rear Valves -> MIATA -> Motor Relay -> MPV, B2200 & B2600i -> MX-3 -> Pressure Differential Switch -> Pump Motor -> Relay Box -> RX-7 -> Sensor Rotor -> System Ground -> Valve Relay -> Voltage Check Of Wheel Speed Sensor -> Wheel Speed Sensor
Vehicle: 1990 Mazda 323 1.6 L4 GAS
MIATA
System Ground
Check for open circuit in terminals 1D, 1S and 2F of control unit connector and ground, Fig. .
Anti-Lock Warning Light
- Remove instrument cluster.
- Connect 12 volts to terminal 2K and ground to terminal 1K, Fig. .
- Ensure ABS warning light glows.
- If light does not glow, check meter fuse, bulb and wiring harness.
- If light glows, check wiring harness to control unit or hydraulic unit. Repair or replace as necessary.
ABS Diode
- Check meter fuse and bulb, then the wiring harness to control unit or hydraulic unit.
- Disconnect hydraulic unit 12 pin connector.
- Using ohmmeter, ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Mazda -> Component Locations -> 1986-94 323 w/1.6L SOHC Engine
Vehicle: 1990 Mazda 323 SE 1.6 L4 GAS
Refe...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1990 Mazda 323 SE 1.6 L4 GAS
- Raise and support vehicle.
- Remove tires and wheels.
- Remove hub nut.
- Remove splash shield.
- Remove stabilizer bar attaching nuts and stabilizer bar from lower control arm.
- Remove tie rod end nut and remove tie rod end from steering knuckle.
- Remove ball joint nut and remove ball joint from lower control arm.
- Using a suitable pry bar, pry driveshaft out of transaxle...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Alternator, Replace
Vehicle: 1990 Mazda 323 SE 1.6 L4 GAS
- Disconnect battery ground cable.
- Disconnect wire and connector from alternator.
- Remove drive belt.
- Remove alternator mounting bolts and nut.
- Remove alternator from vehicle.
- Reverse proc...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Mazda -> Low Coolant Lamp ->
Vehicle: 1990 Mazda 323 LX 1.8 L4 GAS
This lamp should light when engine coolant level in the radiator drops below a predetermined le...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Radiator, Replace
Vehicle: 1990 Mazda 323 SE 1.6 L4 GAS
- Disconnect negative cable from battery.
- Drain coolant into a suitable container.
- Remove resonance chamber from radiator.
- Disconnect cooling fan motor connector.
- Remove overflow hose from radiator.
- Remove radiator upper hose.
- Remove radiator lower hose.
- On models with automatic transaxle, disconnect radiator thermoswitch connector.
- Remove two ...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1990 Mazda 323 AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1990 Mazda 323 1.6 L4 GAS
- Remove air intake pipe.
- Loosen alternator pivot bolt.
- Loosen alternator adjustment bolt and relieve belt tension.
- Remove drive be...
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COMPONENT LOCATION DIAGRAMS FOR 1990 Mazda 323 AUTOMOBILES
Component location diagrams for most 1990 Mazda 323 cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 1990 Mazda 323 AUTOMOBILES
OEM drawn wiring diagrams for most 1990 Mazda 323 cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1990 Mazda 323 AUTOMOBILES
OEM TSB listings for most 1990 Mazda 323 cars and light trucks sold in the U.S. from 1985+.
Document: SERVICE BUMPER SPECIFICATION CHANGE Vehicle: 1990 Mazda 323 DX 1.8 L4 GAS Auto Systems: |
Document: SERVICE BUMPER SPECIFICATION CHANGE Vehicle: 1990 Mazda 323 DX 1.8 L4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1990 Mazda 323 AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1990 Mazda 323 cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1990 Mazda 323 cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1990 Mazda 323 cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1990 Mazda 323 cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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