Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC indicator light G: An Open in the Evaporator Temperature Sensor Circuit
2004 Acura 3.5RLSECTION DTC indicator light G: An Open in the Evaporator Temperature Sensor Circuit
WARNING: This page is about a different car, the 2003 Acura 3.2CL and 2002 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the evaporator temperature sensor 2P connector.
- Measure the resistance between the No. 1 and No. 2 terminals of the evaporator temperature sensor.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is the resistance within the specifications shown on the graph ?
- YES : Go to step 3.
- NO : Replace the evaporator temperature sensor.
- Disconnect climate control unit connector B (20P).
- Check for continuity between the No. 13 terminal of climate control unit connector B (20P) and the No. 2 terminal of the evaporator temperature sensor 2P connector.Fig 2: Checking Continuity Between The No. 13 Terminal Of Climate Control Unit Connector B (20P) And The No. 2 Terminal Of The Evaporator Temperature Sensor 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity ?
- YES : Go to step 5.
- NO : Repair open in the wire between the climate control unit and the evaporator temperature sensor.
- Check for continuity between the No. 15 terminal of climate control unit connector B (20P) and the No. 1 terminal of the evaporator temperature sensor 2P connector.Fig 3: Checking Continuity Between The No. 15 Terminal Of Climate Control Unit Connector B (20P) And The No. 1 Terminal Of The Evaporator Temperature Sensor 2P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity ?
- YES : Check for loose wires or poor connections at climate control unit connector B (20P) and at the evaporator temperature sensor 2P connector. If the connections are good, substitute a known-good climate control unit, and recheck. If the symptom/ indication goes away, replace the original climate control unit.
- NO : Repair open in the wire between the climate control unit and the evaporator temperature sensor.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.