A/C Cut-Off System; Supplemental Service Information; Fuelsystem; Precaution - Mazda 1990 323 Workshop Manual Supplement

A/C CUT-OFF SYSTEM, SUPPLEMENTAL SERVICE INFORMATION, FUEL SYSTEM
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A/C CUT-OFF SYSTEM (For ATX)
To improve the reliability of the engine at high temperature condition, the water thermoswitch on the radiator
is switched OFF above approx. 111 OC (232OF) and stops the A/C operation.
03UOFX-829
SUPPLEMENTAL SERVICE INFORMATION
The following points in this section are changed in comparison with 1990 Mazda 323 Workshop Manual
(1195-l O-89E).
Fuel tank
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Removal / Inspection / installation
4x4 control unit (Fuel pump control unit)
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Inspection procedure added
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Replacement procedure added
Transfer pump switch
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Inspection procedure added
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Replacement procedure added
Transfer pump
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Inspection procedure added
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Replacement procedure added
Exhaust system components
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Removal I Inspection I Installation
03UOFX-810
K
BU
03UOFX-81
9MUOF2-122
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FUEL SYSTEM
PRECAUTION
Fuel Pressure Release and Servicing Fuel System
Fuel in the fuel system remains under high pressure when the
engine is not running.
a) Before disconnecting any fuel line, release the fuel pres-
sure from the fuel system to reduce the possibility of injury
or fire.
1. Start the engine.
2. Push the rear seat cushion buttons and remove the
cushion.
3. Disconnect the fuel pump connector.
4. After the engine stalls, turn off the ignition switch.
5. Reconnect the fuel pump connector and install the rear
seat cushion.
b) Use a rag as protection from fuel spray when disconnect-
ing the hoses.
Plug the hoses after removal.
c) When inspecting the fuel system, use a suitable fuel pres-
sure gauge.
Caution
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Install hose clamps to secure the fuel pressure
gauge to the fuel filter and the fuel main hose to pre-
vent fuel leakage.
Priming Fuel System
After releasing the fuel pressure for repairs or inspection, the
system must be primed to avoid excessive cranking when first
starting the engine. Follow the steps below.
1, Connect the diagnosis connector terminals F/P and GND
with a jumper wire.
2. Turn the ignition switch ON for approx. 10 sec. and check
for fuel leaks.
3. Turn the ignition switch OFF and remove the jumper wire.
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