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31–EVAPORATOR SENSOR OPEN (MTC) (CONTINUED) 2. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT, (C121) SENSOR GROUND Turn the ignition off. Measure the resistance between the (C21) Evaporator Temperature • 1468 ohms @ 40°C (104°F) • 1800 ohms @ 35°C (95°F) • 2221 ohms @ 30°C (86°F) • 2757 ohms @ 25°C (77°F) • 3443 ohms @ 20°C (68°F) • 4330 ohms @ 15°C (59°F) • 5485 ohms @ 10°C (50°F) • 6998 ohms @ 5°C (41°F) • 7354 ohms @ 4°C (39°F) • 7731 ohms @ 3°C (37°F) • 8130 ohms @ 2°C (36°F) • 8553 ohms @ 1°C (34°F) • 9000 ohms @ 0°C (32°F) Is the resistance within the specifications? Yes >> Replace the A/C Heater Control in accordance with the Service Information. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL No >> Go To 3 3. CHECK (C21) EVAPORATOR TEMPERATURE SENSOR SIGNAL CIRCUIT FOR AN OPEN Disconnect the Evaporator Temperature Sensor harness connector. Measure the resistance of the (C21) Evaporator Temperature Sensor Is the resistance below 5.0 ohms? Yes >> Go To 4 No >> Repair the (C21) Evaporator Temperature Sensor Signal circuit for an open. Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 24 - 28 HVAC - ELECTRICAL DIAGNOSTICS WK |