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Home >> Mazda >> 1988 >> 323 L4-1600 1597cc >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> Switch Monitor Function - Individual Switches >> Water Thermo Switch Circuit
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Water Thermo Switch Circuit


Disconnect water thermo switch connector from switch. If monitor lamp does not illuminate, check for E/L control unit malfunction, water thermo switch or relay malfunction, open circuit in wiring harness between water thermo switch and E/L control unit or engine control unit terminal 1H (non-turbo) or 1I (turbo) malfunction.