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 25 (INSTRUMENT PANEL - ANALOG (SEDAN))TESTINGTACHOMETER CIRCUIT TEST
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, Automatic
Tachometer Circuit Test
1994 Plymouth Sundance Base, 2D Hatchback, 2.2 D, AutomaticSECTION Tachometer Circuit Test
WARNING: This page is about a different car, the 1994 Plymouth Acclaim, 1994 Dodge Spirit, and 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
- Remove instrument cluster. See INSTRUMENT CLUSTER R & I under REMOVAL & INSTALLATION. Use voltmeter to check for battery voltage at cavity "A" of instrument cluster Black 11-pin connector. See Fig 1 -Fig 3 . Turn ignition on. Check for ignition/battery voltage at cavity "C" of instrument cluster connector. If battery voltage is not present in both locations, repair wiring as necessary.
- If battery voltage is present, use ohmmeter to check cavity "H" of instrument cluster connector for continuity to ground. See Fig 1
-Fig 3
. If continuity is not present, repair wiring as necessary. If continuity exists, check for tachometer signal by connecting AC digital voltmeter to ground and to cavity "B" of instrument cluster connector.NOTE: Powertrain Control Module (PCM) is located in engine compartment near battery and contains a 60-pin connector. See Fig 4 .
- Voltage reading should be at least one volt with engine running. If voltage is correct, go to step 5). If voltage is less than one volt, check continuity between cavity "B" of instrument cluster connector and pin No. 43 of PCM. See Fig 1 -Fig 4 .
- If continuity is not present, repair wiring as necessary. Ensure PCM and its connector do not have damaged pins or poor connections. If continuity exists between cavity "B" and pin No. 43 of engine controller connector, replace PCM and retest.
- If all tests performed are good and tachometer is still inoperative, replace tachometer drive module. Tachometer drive module is attached to printed circuit board on rear of instrument cluster. If tachometer still remains inoperable, replace tachometer assembly.
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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.