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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 695 (NAVIGATION SYSTEM - DIAGNOSTICS)AVC-LAN CIRCUITINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard
Inspection Procedure
2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT RADIO AND NAVIGATION ASSY
- Disconnect the radio and navigation assy connector R7.
- Measure the resistance according to the value(s) in SPECIFIED CONDITION
.
Standard:
SPECIFIED CONDITIONTester connection Condition Specified condition ATX+ - ATX- Always 60 to 80 Ω
- NG: REPLACE RADIO AND NAVIGATION ASSY (SEE REPLACEMENT )
- OK: Go to Next Step.
- CHECK HARNESS AND CONNECTOR (RADIO AND NAVIGATION ASSY - STEREO COMPONENT AMPLIFIER ASSY)
- Disconnect the connectors from the radio and navigation assy R7 and stereo component amplifier assy S11.
- Measure the resistance according to the value(s) in SPECIFIED CONDITION
.
Standard:
SPECIFIED CONDITIONTester connection Condition Specified condition ATX+ - TX+ (S11-8)((1)) Always Below 1 Ω ATX- - TX- (S11-7) ((1)) Always Below 1 Ω ATX+ - TX+ (S11-20) ((2)) Always Below 1 Ω ATX- - TX- (S11-19) ((2)) Always Below 1 Ω ATX+ - Body ground Always 10 kΩ or higher ATX- - Body ground Always 10 kΩ or higher (1) Coupe (2) Convertible
RENDER: 1.0x
NO RELATED
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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.