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 RAM1990DAKOTA LE, 2D PICKUP, 3.9 X, 4WD, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - 2.5LENTERING ON-BOARD DIAGNOSTICSDRB-II DIAGNOSTIC MODE
1990 Dodge and Ram Dakota LE, 2D Pickup, 3.9 X, 4WD, Automatic
DRB-II Diagnostic Mode
1990 Dodge and Ram Dakota LE, 2D Pickup, 3.9 X, 4WD, AutomaticSECTION DRB-II Diagnostic Mode
- Turn ignition off. Attach DRB-II Tester (C-4805) to self-test connector. Connector is located in engine compartment near left shock tower.
- Start engine (if possible). With foot on brake, move transmission shift lever through all positions, ending in Park. Turn A/C switch on, then off (if equipped).
- Turn engine off. Without starting engine again, turn ignition on. Enter vehicle model year and engine size. Read fault data on DRB-II. Refer to NO START TEST 1 (NS-1) or DRIVEABILITY TEST 1 (DR-1) for your engine.
NOTE:
Actuator, sensor, solenoid and switch tests available on DRB-II will vary depending on engine, transaxle and emission packages.
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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.