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.
2009 Lexus LS 600hLFACTORY OEM SERVICE PROCEDURE
Service Data
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
HYBRID BATTERY CONTROL - SERVICE DATA
| SMRB (HV battery junction block assembly) Resistance | g2-1 - z30-1 | 10kΩ or higher (Battery voltage is not applied between terminals z38-3 (CON2) and z38-2 (GND)) |
| g2-1 - z30-1 | Below 1 Ω (Battery voltage is applied between terminals z38-3 (CON2) and z38-2 (GND)) |
|
| g2-1 - Z58-1 | Below 1Ω (Always) | |
| g2-1 - z27-1 | Below 1 Ω (Always) | |
| z38-3 (CON2) - z38-2 (GND) | 18 8 to 32.1 Ω at -35 to 80°C (-31 to 176°F) | |
| SMRG (HV battery junction block assembly) Resistance | g3-1 - Z34-1 | 10 kΩ or higher (Battery voltage is not applied between terminals z38-1 (CON1) and z38-2 (GND)) |
| g3-1 - Z34-1 | Below 1 Ω (Battery voltage is applied between terminals z38-1 (CON1) and z38-2 (GND)) | |
| g3-1 - z60-1 | Below 1 Ω (Always) | |
| z34-1 - z59-1 | Below 1 Ω (Always) | |
| z34-1 - Z27-4 | Below 1 Ω (Always) | |
| z38-1 (COM) - Z38-2 (GND) | 18 8 to 32.1 Ω at -35 to 80°C (-31 to 176°F) | |
| luggage room junction block (Battery blower relay) Resistance |
LG-1 - LA-41 | 10 kΩ or higher (Battery voltage is not applied between terminals LH-1 and LD-14) |
| LG-1 - LA-41 | Below 1Ω (Battery voltage is applied between terminals LH-1 and LD-14) |
Factory Service Tools
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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.