DTC 78

id070200804600

DTC 78 | Rear evaporator temperature sensor (present)
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POSSIBLE CAUSE | • Rear evaporator temperature sensor malfunction • Open or short circuit between rear evaporator temperature sensor and front climate control unit

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | • Is resistance between terminals 2J and 2P of front climate control unit connector (16-pin) as indicated below? ― 166 ohms—32 kilohms (-30—80 °C {-22—176 °F}) ― 2.107—2.575 kilohms (15 °C {59 °F}) | Yes | Inspect the connection of the front climate control unit connector.
No | Go to the next step.
2 | • Inspect rear evaporator temperature sensor. (See REAR EVAPORATOR TEMPERATURE SENSOR INSPECTION.) • Is it okay? | Yes | Repair wiring harness.
No | Replace rear evaporator temperature sensor. (See REAR EVAPORATOR TEMPERATURE SENSOR REMOVAL/INSTALLATION.)