1.CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from TCM.
3) Measure the resistance between TCM connector terminals.
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Is the resistance 500 Ω or more?
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2.CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR.
Measure the resistance of harness between TCM connector and chassis ground.
Connector & terminal
(B55) No. 23 — Chassis ground:
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Is the resistance 1 MΩ or more?
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3.CHECK HARNESS.
Measure the resistance between TCM connector terminals while shaking the harness.
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Does the resistance change?
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Replace the TCM. 
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4.CHECK HARNESS CONNECTOR BETWEEN TCM AND ATF TEMPERATURE SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from transmission.
3) Measure the resistance of harness between TCM connector and chassis ground.
Connector & terminal
(B55) No. 12 — Chassis ground:
(B55) No. 23 — Chassis ground:
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Is the resistance 1 MΩ or more?
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Repair the short circuit of harness between TCM and transmission harness.
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5.CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between transmission connector terminals.
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Is the resistance 500 Ω or more?
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Check short circuits in harnesses or connectors, and repair the defective part.
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6.CHECK TRANSMISSION HARNESS.
2) Drain the automatic transmission fluid.
CAUTION:
Do not drain ATF until it cools down.
4) Disconnect the harness connector from control valve.
5) Measure the resistance between transmission connector and transmission ground.
Connector & terminal
(T4) No. 11 — Transmission ground:
(T4) No. 15 — Transmission ground:
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Is the resistance 1 MΩ or more?
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Replace the transmission harness.
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7.CHECK ATF TEMPERATURE SENSOR.
Measure the resistance between control valve connector terminals.
Connector & terminal
FF model
(AT2) No. 1 — No. 3:
AWD model
(AT2) No. 4 — No. 9:
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Is the resistance 500 Ω or more?
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Check short circuits in harnesses or connectors, and repair the defective part.
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Replace the control valve body. 
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