Description

Acura TSX 2004 Service Manual – Audio System OEM Factory Specs

If you’ve ever tried to replace a speaker in a 2004 Acura TSX using a generic aftermarket guide, you know the drill. Wire colors that don’t match, clips that break because the diagram was drawn from a different model year, and you end up with a door panel that rattles. I’ve been turning wrenches for 28 years, and I’ve thrown aftermarket manuals in the trash more times than I can count. This is the OEM document. Factory-issued. 59 pages that cover exactly what Acura wanted you to know when you’re working on the audio system in a 2004 TSX. The Acura TSX 2004 Service Manual – the audio supplement – is what you need if you want to do the job right the first time without breaking plastic trim.

Component Location Index – Find Every Part Without Guessing

Page 1 gives you a two-part diagram showing exactly where every speaker, antenna lead, amplifier, and the Audio-HVAC display module lives. Tweeters, front passenger door speaker, rear speakers, window antenna amplifier/defogger coil – it’s all mapped. No squinting at blurry photos from a third-party site. Acura’s engineers drew these diagrams so a technician could walk up to a TSX and locate the stereo amplifier under the dash in under a minute. That saves billable time whether you’re a shop or a weekend warrior.

Circuit Diagram: Trace the Wiring Without Burning Something

The wiring diagram spreads across pages 3 and 4. You get the full circuit – battery, under-hood fuse/relay box, ignition switch, stereo amplifier, window antenna coil, multiplex integrated control unit, under-dash fuse/relay box, and every wire color code. Notice the shield ground on the Audio-HVAC display panel. Aftermarket diagrams often skip that ground, leading to noise in the system. This manual shows the shield ground (A19, A20) and the bus lines (B3, B10). If you’re adding an aftermarket amplifier or troubleshooting a no-sound condition, you need this diagram open on the bench.

Speaker Replacement – Front and Tweeter

Page 4 and 5 walk you through removing the front speaker and the tweeter. The note on page 4 is critical: if you pull the speaker out too far from the door, you’ll damage the lower clips (C). I’ve seen guys snap those clips and then blame the car. The procedure: pull the speaker straight out just enough to release the upper clips, then lift straight up to release the lower clips. Then disconnect the 2P connector. That’s it. The tweeter removal is equally brief – remove the grille and tweeter assembly. No guesswork, no stripped trim. Automotive Industry Overview

Why OEM Beats Aftermarket for Audio Work

Aftermarket manuals often lift diagrams from one model year and apply them to another. The 2004 TSX audio system is unique – it uses a window antenna amplifier/defogger coil, a stereo amplifier that talks to the multiplex integrated control unit, and an Audio-HVAC display module that integrates audio and HVAC controls. Aftermarket wiring diagrams for this car are notorious for missing the taillight relay connection or the brightness controller circuit (page 3). This OEM manual gives you the exact wire colors (YEL/GRN, WHT/BLU, BLU/RED, etc.) and pin numbers (A1, A4, A9, A10, etc.). Automotive Industry Overview

Is This Manual Worth Your Time?

If you own a 2004 Acura TSX and need to fix, upgrade, or diagnose the audio system, yes. This is the factory document. 59 pages, published in 2004, straight from the Honda/Acura engineering team. It does not cover engine work, transmission, or suspension – it’s an audio-specific supplement. That’s what makes it valuable: it focuses on one system and covers it completely. No wasted pages on stuff you don’t need. You get component locations, circuit diagrams, and speaker replacement steps with factory tolerances. Compare that to a 500-page generic manual that glosses over the audio wiring in two paragraphs.

Related Manuals

• Acura TSX 2004 Service Manual
• Acura Integra 1998 Service Manual – OEM Factory Specs
• 1993 Acura Vigor Service Manual – OEM Factory Specs

FAQ – Common Questions About This Manual

Does this manual cover the navigation system?

The wiring diagram on page 3 does show the navigation display unit and navigation unit, but only as they interface with the audio system. The main focus is the stereo, amplifier, and speakers.

What torque specs are provided?

None. This is an audio system supplement. Speaker and trim fasteners are typically hand-tightened. For chassis and engine torque, you need the base 2004 Acura TSX service manual.

Can I use this manual to install an aftermarket head unit?

Yes. The circuit diagram shows the Audio-HVAC display module, stereo amplifier, and wiring colors. You can identify the speaker wires, power, ground, and accessory signals to splice into an aftermarket radio. Just pay attention to the multiplex control – the factory amp uses a bus signal that an aftermarket unit won’t support. You may need a bypass harness.

Is this an original OEM print or a reprint?

Original OEM digital scan. No reprint, no third-party copy. The pages are from the factory-issued Acura service information system.

You’ve seen what happens when you rely on aftermarket documentation for a 2004 Acura TSX audio job. Broken clips, wrong wire colors, and a system that doesn’t work right. This manual eliminates that. Access the Factory Manual and keep it on your tablet or print it for the toolbox. Your TSX’s audio system will thank you.