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 14 (INSTRUMENT PANEL (CONVERTIBLE))TESTINGTEMPERATURE GAUGE CIRCUIT TEST
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, Automatic
Temperature Gauge Circuit Test
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, AutomaticSECTION Temperature Gauge Circuit Test
WARNING: This page is about a different car, the 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
When a problem occurs with any gauge, before disassembling cluster to test gauge(s), check for loose connections or faulty wiring.
- Remove cluster bezel from instrument panel. Remove temperature gauge retaining screws (if equipped). Remove temperature gauge by pulling straight out from cluster. DO NOT turn or twist gauge when pulling, or severe damage to cluster pins will result.
- With ignition on, check for battery voltage at temperature gauge (B+) pin in cluster. See Figure . Check for ground continuity at temperature gauge ground pin of cluster. If voltage and ground are present, go to step 5).
- If voltage and ground are not present at pins, remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check for battery voltage and ground at appropriate cluster harness connectors. See Figure and Figure . See WIRING DIAGRAMS .
- If voltage and ground are not present at cluster harness connectors, repair wiring as necessary. If voltage and ground are present at cluster harness connectors, check cluster for bent or broken terminal pins. If terminal pins are okay, replace cluster printed circuit board and retest.
- Ensure temperature sending unit connector is connected on engine component. Turn ignition on. Using ohmmeter, check cold engine resistance reading at temperature sender input pin of cluster. See Figure . Correct reading should be within 4 ohms of specification. See TEMPERATURE GAUGE CALIBRATION .
- If reading is infinity, check for faulty sending unit and for open in wiring circuit from cluster to sending unit. See SENDING UNIT TEST . Repair or replace as required.
- Start and warm engine. Using ohmmeter, check resistance reading at temperature sender input pin of cluster. Note reading. Position temperature gauge onto cluster pins and install by pushing gauge straight inward onto pins. Note gauge reading after 15 seconds. Remove gauge from cluster.
- Reconnect ohmmeter to temperature sender input pin of cluster. Check gauge pointer positions against sending unit resistances. See TEMPERATURE GAUGE CALIBRATION . If gauge indication is not very close to resistance reading, replace gauge.
TEMPERATURE GAUGE CALIBRATION
| Resistance | Gauge Position |
|---|---|
| 455 Or More Ohms | Cold Or Below Normal Range |
| 288 Ohms | Low Side Of Normal Range |
| 125 Ohms | Mid Scale |
| 76 Ohms | High Side Of Normal Range |
| 64 Ohms | High |
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.