Protege DX L4-2.0L DOHC (2002)
1. Remove the PCM.
2. Connect the SST (104 Pin Breakout Box) to the PCM as shown.
3. Tighten the connector attaching screw.
Tightening torque
16 - 23 N.m {1.6 - 2.4 kgf.m, 12 - 17 ft.lbf}
4. Inspect for an open or short circuit in the following wiring harnesses by probing the applicable sensor and SST (104 Pin Breakout Box) terminals
with ohmmeter leads.
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If there is an open or short circuit, repair or replace wiring harnesses.
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If there is no open or short circuit, replace the ECT sensor.
Open circuit
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ECT signal circuit (ECT sensor connector terminal A and PCM connector terminal 38 through common connector)
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GND circuit (ECT sensor connector terminal B and PCM connector terminal 91)
Short circuit
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ECT signal circuit (ECT sensor connector terminal A and PCM connector terminal 38 to GND)
5. Install the ECT sensor.