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.
2012 Lexus LS 460L AWDFACTORY OEM SERVICE PROCEDURE
Service Data
BRAKE ACTUATOR
| Item | Tester Connection | Specified Condition |
|---|---|---|
| Brake actuator assembly | 20 (SMC1) ββ 19 (BS1) | 15.3 to 25.0 Ξ© |
| 6 (SMC2) ββ 7 (BS2) | ||
| 8 (FRA+) - 5 (FRA-) | 3.6 to 6.0 Ξ© | |
| 22 (FRR+) - 21 (FRR-) | ||
| 13 (FLA+) - 14 (FLA-) | ||
| 27 (FLR+) - 28 (FLR-) | ||
| 12 (RRA+) - 11 (RRA-) | ||
| 10 (RLA+) - 9 (RLA-) | ||
| 26 (RRR+) - 25 (RRR-) | 4.4 to 7.0 Ξ© | |
| 24 (RLR+) - 23 (RLR-) | ||
| Brake accumulator pump | A2 (BM1) ββ A4 (GND1) | 10 kΞ© or higher |
| B2 (BM2) ββ A4 (GND1) | ||
| A2 (BM1) ββ B2 (BM2) | Below 1 Ξ© | |
| A4 (GND1) ββ B1 (GND2) | ||
| A2 (BM1) ββ A1 (MTT) | 950 to 1050 Ξ© | |
| B2 (BM2) ββ A1 (MTT) |
ABS MOTOR RELAY (ABS MTR)
| Item | Tester Connection | Switch Condition | Specified Condition |
|---|---|---|---|
| ABS motor relay (ABS MTR) | Terminal 23 or 24 - Body ground | Motor relay: ON | 11 to 14 V |
| Motor relay: OFF | 0 V | ||
| Terminal 25 or 26 - Body ground | - | 11 to 14 V |
ABS MOTOR RELAY (ABS MTR2)
| Item | Tester Connection | Specified Condition |
|---|---|---|
| ABS motor relay (ABS MTR2) | 3 - 5 | 10 kΞ© or higher |
| Below 1 Ξ© (when battery voltage is applied to terminals 1 and 2) |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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