Corolla S Sedan L4-1.8L (1ZZ-FE) (2002)
c. Connect the connector to amplifier and inspect wire harness side connector from the back side, as shown in the chart.
Test conditions:
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Running engine at idle speed
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Blower speed control switch at "HI" position
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A/C switch ON
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Temperature control dial at "MAX. COOL" position
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Set on manifold gauge set
If circuit is as specified, try to replace the amplifier with a new one. If the circuit is not as specified, inspect the circuits connected to other
parts.