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)POWER SOURCE CIRCUIT (RADIO AND NAVIGATION ASSY)INSPECTION 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 (B, ACC, GND)
- 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 GND - Body ground Always Below 1 Ω - Measure the voltage according to the value(s) in SPECIFIED CONDITION
.
Standard:
SPECIFIED CONDITIONTester connection Condition Specified condition B - GND Always 10 to 14 V ACC - GND Ignition SW ACC 10 to 14 V
- NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
- OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE OR DIAGNOSTIC TROUBLE CODE TABLE (SEE PROBLEM SYMPTOMS TABLE or DIAGNOSTIC TROUBLE CODE TABLE )
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.