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 MANUALSPLYMOUTH1994SUNDANCE BASE, 2D HATCHBACK, 2.2 D, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 17 (A/C-HEATER SYSTEM - AUTOMATIC)TROUBLE SHOOTINGTEST 25B - IN-CAR TEMPERATURE SENSOR
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, Automatic
Test 25B - In-Car Temperature Sensor
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, AutomaticSECTION Test 25B - In-Car Temperature Sensor
WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Perform TEST 19A before proceeding with this test.
- Unplug in-car temperature sensor, located above glove box. With DRB in voltmeter mode, probe Red/Tan wire at sensor harness connector. If meter does not indicate higher than 10 volts, go to next step. If meter indicates higher than 10 volts, repair short to voltage on Red/Tan wire. Perform VERIFICATION TEST.
- If meter does not indicate higher than 4 volts, go to next step. If meter indicates higher than 4 volts, go to step 5).
- With DRB in voltmeter mode, backprobe Red/Tan wire in BCM Black connector. BCM is located above right kick panel. If meter does not indicate higher than 4 volts, go to next step. If meter indicates higher than 4 volts, repair Red/Tan wire between in-car sensor and BCM. Perform VERIFICATION TEST.
- Unplug BCM connectors. With DRB in ohmmeter mode, probe Red/Tan wire in BCM Black connector. If resistance is not less than 5 ohms, replace BCM. If resistance is less than 5 ohms, repair short to ground on Red/Tan wire. Perform VERIFICATION TEST.
- Turn off courtesy light switch. Close all doors. Wait one minute. With DRB in ohmmeter mode, probe Gray/Tan wire at sensor harness connector. If resistance is not less than 5 ohms, go to next step. If resistance is less than 5 ohms, go to step 7).
- With DRB in ohmmeter mode, backprobe Gray/Tan wire in Beige BCM connector. BCM is located above right kick panel. If resistance is less than 5 ohms, replace BCM. If resistance is not less than 5 ohms, repair open Gray/Tan wire between sensor and Beige BCM connector. Perform VERIFICATION TEST.
- Reconnect wiring to in-car sensor. Using DRB, erase body codes. Wait 15 seconds. If DRB does not display ATC IN-CAR SENSOR FAILURE, go to next step. If display is ATC IN-CAR SENSOR FAILURE, replace in-car sensor. Perform VERIFICATION TEST.
- If no other codes are displayed, system is okay at this time. If any other codes are displayed, perform TEST 19A. Perform VERIFICATION TEST.
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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.