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.
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HOMESERVICE MANUALSDODGE AND RAM1996CARAVAN L4-2.4L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
1996 Dodge and Ram Caravan L4-2.4L DOHC
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1996 Dodge and Ram Caravan L4-2.4L DOHCSECTION Testing and Inspection
Fig 93 Engine Coolant Temperature Sensor:
1. With the key OFF, disconnect wire harness connector from coolant temperature sensor (Fig. 93).
Fig 96 Engine Coolant Temperature Sensor Connector:
2. Connect a high input impedance (digital) volt-ohmmeter to terminals A and B (Fig. 96). The ohmmeter should read as follows:
- Normal operating temperature around 200°F ohmmeter should read approximately 700 to 1,000 ohms.
- Room temperature around 70°F ohmmeter should read approximately 7,000 to 13,000 ohms.
3. Test the resistance of the wire harness between the PCM connector terminal 26 and the sensor harness connector. Also check for continuity between PCM connector terminal 43 and the sensor harness connector.
- If the resistance is greater than 1 ohm, repair the wire harness as necessary.
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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.