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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 702 (THEFT DETERRENT SYSTEM - DIAGNOSTICS)TERMINALS OF ECU

2004 Toyota Matrix XR, FWD, Standard

Terminals Of Ecu

2004 Toyota Matrix XR, FWD, StandardSECTION Terminals Of Ecu

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.

CHECK INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)

Fig 1: Identifying Instrument Panel J/B Assy (Multiplex Network Body ECU) Connectors Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the B6, B7, B8 and B9 ECU connectors.
2. Disconnect the 2A, 2F and 2M J/B connectors.
3. Measure the voltage and resistance of the wire harness side connectors.
  Standard:
  
  Fig 2: Measuring Voltage & Resistance Of Wire Harness Side Connectors Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
4. Reconnect the B6, B7, B8 and B9 ECU connectors.
5. Reconnect the 2A, 2F and 2M J/B connectors.
6. Measure the voltage of the connectors.
  Standard:
  
  Fig 3: Measuring Voltage Of Connectors Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the J/B assy (body ECU) may have a malfunction.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.