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 RAM1999CARAVAN BASE, 2.4 BREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTINGMISCELLANEOUS CONTROLSRELAYSAUTO SHUTDOWN (ASD) RELAY
1999 Dodge and Ram Caravan Base, 2.4 B
Auto Shutdown (ASD) Relay
1999 Dodge and Ram Caravan Base, 2.4 BSECTION Auto Shutdown (ASD) Relay
- Remove ASD relay from power distribution center at driver's side front corner of engine compartment, near the battery. Note terminal identification on ASD relay. See Figure .
- To check ASD relay resistance, use ohmmeter and check resistance between terminals No. 85 and 86 on ASD relay. Replace ASD relay if resistance is not 70-80 ohms.
- To check ASD relay operation, connect ohmmeter between terminals No. 30 and 87A on ASD relay. Ohmmeter should indicate continuity between terminals No. 30 and 87A on ASD relay.
- Connect ohmmeter between terminals No. 30 and 87 on ASD relay. See Figure . Ohmmeter should indicate no continuity between terminals No. 30 and 87 on ASD relay.
- Connect 16-gauge jumper wire between negative battery terminal and terminal No. 85 on ASD relay. Connect 16-gauge jumper wire between positive battery terminal and terminal No. 86 on ASD relay.CAUTION: DO NOT allow ohmmeter leads to contact terminals No. 85 and 86 on ASD relay when ASD relay is energized.
- ASD relay should now be energized. No continuity should now exist between terminals No. 30 and 87A on ASD relay. Continuity should now exist between terminals No. 30 and 87 on ASD relay. Disconnect jumper wires. Replace ASD relay if defective.
- If ASD relay or wiring circuit failure exists, a Diagnostic Trouble Code (DTC) will be stored in Powertrain Control Module (PCM). See SELF-DIAGNOSTICS - CARAVAN, TOWN & COUNTRY, & VOYAGER article.
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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.