Protege LX L4-1489cc 1.5L DOHC MFI (1998)
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Open or short circuit in harness
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Harness/pin clamp is loose or disconnected.
Investigate the GND system
1. Confirm that terminal sensor #4 is at 0 V.
(1) If it is at 0 V, inspect the sensor. If necessary, replace the sensor.
(2) If not at 0 V, check the following points:
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Open circuit in harness
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Female terminal opening loose
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Coupler (pin holder) damage
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Pin discoloration (blackness)
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Harness/pin clamp is lose or disconnected
Thermistor Type (Intake Air Temperature and Engine Coolant Temperature Sensors).
