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 RAM1999DAKOTA SLT, 2D PICKUP, 3.9 X, 4WD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEBODY, CAB CONTROL SYSTEMSBODY CONTROL COMPUTERAUDIO SYSTEMPOOR SOUND QUALITY FROM ONE SPEAKER
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, Standard
Poor Sound Quality From One Speaker
1999 Dodge and Ram Dakota SLT, 2D Pickup, 3.9 X, 4WD, StandardSECTION Poor Sound Quality From One Speaker
NOTE:
For connector terminal identification and wiring diagrams, see
BODY CONTROL COMPUTER - INTRODUCTION article. Perform VERIFICATION TEST VER-1A
after each repair.
- Ensure radio is on. If speaker with poor quality is a pillar speaker, go to next step. If speaker with poor quality is not a pillar speaker, go to step 4 .
- Turn radio off. Disconnect poor quality pillar speaker and related lower speaker. Using external ohmmeter, measure resistance between poor quality pillar (-) terminal and lower speaker (-) terminal. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open speaker (-) circuit.
- Measure resistance between poor quality pillar (+) terminal and lower speaker (+) terminal. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open speaker (+) circuit.
- Turn radio on. Gain access to back of radio. Do not disconnect connectors. Measure voltage between ground and backprobe radio connector poor quality speaker ground circuit. See IDENTIFYING RADIO SPEAKER CIRCUITS
table. If voltage is about 5 volts, repair open speaker (-) circuit. If voltage is not about 5 volts, replace radio.IDENTIFYING RADIO SPEAKER CIRCUITS
Circuit/Connector Terminal No. Wire Color Left Front (-)/Gray 2 Brown/Red Left Rear (-)/Black 6 Brown/Light Blue Right Front (-)/Gray 3 Light Blue/Red Right Rear (-)/Black 7 Dark Blue/Orange Left Front (+)/Black 4 Dark Green Left Rear (+)/Black 2 Brown/Yellow Right Front (+)/Black 5 Violet Right Rear (+)/Black 3 Dark Blue/White - Measure voltage between ground and backprobe radio connector poor quality speaker (+) circuit. See IDENTIFYING RADIO SPEAKER CIRCUITS table. If voltage is about 5 volts, repair open speaker (+) circuit. If voltage is not about 5 volts, replace radio.
- Turn radio on. Disconnect poor quality speaker connector terminals. Using an external voltmeter, measure voltage between ground and poor quality speaker (+) terminal. If voltage is more than 5 volts, replace poor quality speaker. If voltage is 5 volts or less, go to next step.
- Measure voltage between ground and poor quality speaker (-) terminal. If voltage is less than 5 volts, repair open speaker circuit. If voltage is 5 volts or more, system is functioning correctly.
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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.