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DTC 15

id070200803000

DTC 15 | Water temperature sensor (past)
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POSSIBLE CAUSE | • Water temperature sensor malfunction • Climate control unit malfunction • Open or short circuit between water temperature sensor and climate control unit

Diagnostic Procedure

STEP | INSPECTION | ACTION
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1 | • Is water temperature sensor normal? | Yes | Go to the next step.
No | Replace water temperature sensor.
2 | • Disconnect climate control unit connector (24-pin) and water temperature sensor connector. • Is there open circuit between following terminals of climate control unit connector (24-pin) and water temperature sensor connector? - 1O-A - 1I-B | Yes | Repair wiring harness.
No | Go to the next step.
3 | • Is there short circuit to ground between terminal 1O of climate control unit connector (24-pin) and terminal A of water temperature sensor connector? | Yes | Repair wiring harness.
No | Connect climate control unit connector and go to the next step.
4 | • Turn the ignition switch to ON position. • Is voltage at terminal 1O of climate control unit connector (24-pin) above 5 V? | Yes | This system is normal at present. (Erase the past failure from memory.)
No | Replace climate control unit.