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.
2004 Lexus ES 330FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Splices
SPLICES LOCATION
| Component | Location |
|---|---|
| B1 | In driver's door. See Figure. |
| B2 | In center of roof. See Figure. |
| B3 | In center of roof. See Figure. |
| B4 | In body harness, near right front door courtesy light. See Figure. |
| B5 | In body harness, under driver's seat. See Figure. |
| B6 | In body harness, at left rocker panel. See Figure. |
| B7 | In body harness, in left rear door. See Figure. |
| B8 | In body harness, at left rear door sill. See Figure. |
| B9 | In body harness, on floor behind right front seat. See Figure. |
| B10 | In body harness, at right rear door sill. See Figure. |
| B11 | In body harness, near right rear door harness. See Figure. |
| B12 | In body harness, near junction connector No. 13. See Figure. |
| B13 | In body harness, at top of left wheelwell. See Figure. |
| B14 | In body harness, behind left rear combination light. See Figure. |
| B15 | In body harness, at left side of trunk. See Figure. |
| B17 | In body harness, behind left rear combination light. See Figure. |
| B18 | In body harness, behind left rear combination light. See Figure. |
| B19 | In body harness, at left rear of luggage compartment. See Figure. |
| B20 | In taillight harness, right rear corner of vehicle. See Figure. |
| B21 | In body harness, near right quarter panel. See Figure. |
| B22 | In body harness, below driver's seat. See Figure. |
| B23 | In body harness, below driver's seat. See Figure. |
| B24 | In body harness, below right front seat. See Figure. |
| E1 | In engine compartment harness, near right parking light. See Figure. |
| E2 | In engine harness, near fuel injector No. 2. See Figure. |
| E3 | In engine harness, near power steering oil pressure switch. See Figure. |
| E4 | In engine harness, near left front turn signal light. See Figure. |
| I1 | In dash harness, near left kick panel. See Figure. |
| I2 | In dash harness, near accelerator position sensor. See Figure. |
| I3 | In dash harness, near IH1. See Figure. |
| I4 | In dash harness, near stereo component amplifier. See Figure. |
| I5 | In dash harness, near right side footwell light. See Figure. |
| I6 | In dash harness, near grommet on right side of firewall. See Figure. |
| I7 | In dash harness, near stereo component amplifier. See Figure. |
| I8 | In dash harness, near junction connector No. 10. See Figure. |
| I9 | In dash harness, left of center console. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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