Temperature gauge does not work

Hi,

Chances are the sensor is bad. However, it could be a wiring issue or even related to the instrument panel.

Before replacing the sensor, make sure the wiring is connected to it and make sure nothing is damaged.

If everything appears to be good, here are the directions for replacement. The attached pic correlates with the directions.

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2003 Honda Truck CR-V 4WD L4-2.4L
Procedures
Vehicle Sensors and Switches Sensors and Switches - Cooling System Engine - Coolant Temperature Sensor/Switch Service and Repair Procedures
PROCEDURES
ECT Sensor Replacement

1. Remove the air cleaner.
2. Disconnect the ECT sensor 2P connector.

Pic 1

3. Remove the ECT sensor (A).
4. Install the sensor in the reverse order of removal with a new O-ring (B).

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Let me know if this helps.

Joe

So the temperature gauge is controlled by the cluster and it gets the information directly from the PCM. The PCM gets the engine temp from the coolant temperature sensor. Most likely the temp sensor is the issue. The way to confirm this is to monitor the PCM data and see if there is an engine temperature reading and if there is, then the cluster is just not getting the signal from the PCM.

However, I suspect we have a sensor issue. If you don't have a scan tool that can do that then you can remove the sensor and put it in a pot of water then boil it. As the temperature goes up, the resistance should come down.

Let me know if you have questions. Thanks