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 SC 430FACTORY OEM SERVICE PROCEDURE
Service Data
Service Data Specification Table (1 Of 2)
| Line pressure (Wheel locked) | ||
| Idling | ||
| D position | 395 - 455 kPa (4.0 - 4.6 kgf.cm2 , 57 - 65 psi) | |
| R position | 0 | |
| Stall | ||
| D position | 1,200 - 1,360 kPa (12.2 - 13.8 kgf.cm2 , 174 - 196 psi) | |
| R position | 1,655 - 1,960 kPa (16.9 - 19.8 kgf.cm2 , 240 - 282 psi) | |
| Engine stall revolution (D position) | 2,450 ± 150 rpm | |
| Time lag | N → D position | Less than 1.2 seconds |
| N → R position | Less than 1.5 seconds | |
| Engine idle speed (N position and A/C OFF) | 750 ± 50 rpm | |
| Drive plate runout | Max. | 0.20 mm (0.0079 in.) |
| Torque converter clutch sleeve runout | Max. | 0.30 mm (0.0118 in.) |
| Torque converter clutch installation (Correct distance) | More than 0.1 mm (0.004 in.) | |
| Extension housing oil seal drive in depth from flat end | 2.0 mm (0.079 in.) | |
| Shift schedule (NORM and PWR mode) | ||
| Differential gear ratio 3.266 | ||
| D, 4 position | ||
| (Throttle valve fully opened) | 1 → 2 | 58 - 70 km/h (36 - 43 mph) |
| 2 → 3 | 90 - 101 km/h (56 - 63 mph) | |
| 3 → 4 | 144 - 160 km/h (89 - 99 mph) | |
| 4 → 5 | 212 - 231 km/h (132 - 144 mph) | |
| 5 → 4 | 205 - 220 km/h (127 - 137 mph) | |
| 4 → 3 | 137 - 149 km/h (85 - 93 mph) | |
| 3 → 2 | 81 - 88 km/h (50 - 55 mph) | |
| 2 → 1 | 42 - 48 km/h (26 - 30 mph) | |
| (Throttle valve fully closed) | 4 → 5 | 34 - 40 km/h (21 - 25 mph) |
| 5 → 4 | 25 - 30 km/h (16 - 19 mph) | |
| 3 position | ||
| (Throttle valve fully opened) | 1 → 2 | 58 - 70 km/h (36 - 43 mph) |
| 2 → 3 | 90 - 101 km/h (56 - 63 mph) | |
| 4 → 3 | 137 - 149 km/h (85 - 93 mph) | |
| 3 → 2 | 81 - 88 km/h (50 - 55 mph) | |
| 2 → 1 | 42 - 48 km/h (26 - 30 mph) | |
| 2 position | ||
| (Throttle valve fully opened) | 1 → 2 | 58 - 70 km/h (36 - 43 mph) |
| 3 → 2 | 82 - 90 km/h (51 - 56 mph) | |
| 2 → 1 | 42 - 48 km/h (26 - 30 mph) | |
| L position | ||
| (Throttle valve fully opened) | 2 → 1 | 39 - 45 km/h (24 - 28 mph) |
Service Data Specification Table (2 Of 2)
| Shift schedule (SNOW mode) | ||
| Differential gear ratio 3.266 | ||
| D, 4 position | ||
| (Throttle valve fully opened) | 1 → 2 | 36 - 56 km/h (22 - 35 mph) |
| 2 → 3 | 59 - 87 km/h (37 - 54 mph) | |
| 3 → 4 | 87 - 128 km/h (54 - 80 mph) | |
| 4 → 5 | 137 - 212 km/h (85 - 132 mph) | |
| 5 → 4 | 84 - 130 km/h (52 - 81 mph) | |
| 4 → 3 | 57 - 88 km/h (35 - 55 mph) | |
| 3 → 2 | 5 - 50 km/h (3 - 31 mph) | |
| (Throttle valve fully closed) | 4 → 5 | 34 - 40 km/h (21 - 25 mph) |
| 5 → 4 | 25 - 30 km/h (16 - 19 mph) | |
| 3 position | ||
| (Throttle valve fully opened) | 1 → 2 | 36 - 56 km/h (22 - 35 mph) |
| 2 → 3 | 59 - 87 km/h (37 - 54 mph) | |
| 4 → 3 | 137 - 149 km/h (85 - 93 mph) | |
| 3 → 2 | 5 - 50 km/h (3 - 31 mph) | |
| 2 position | ||
| (Throttle valve fully opened) | 1 → 2 | 36 - 56 km/h (22 - 35 mph) |
| 3 → 2 | 82 - 90 km/h (51 - 56 mph) | |
| L position | ||
| (Throttle valve fully opened) | 2 → 1 | 39 - 45 km/h (24 - 28 mph) |
| Lock-up point (Differential gear ratio 3.266) | ||
| (Throttle valve opening 5 %) | ||
| 5th gear (D position) | Lock-up ON | 59 - 66 km/h (37 - 41 mph) |
| Lock-up OFF | 55 - 62 km/h (34 - 38 mph) | |
| 4th gear (4 position) | Lock-up ON | 140 - 153 km/h (87 - 95 mph) |
| Lock-up OFF | 133 - 146 km/h (83 - 91 mph) | |
| Flex lock-up point (Differential gear ratio 3.266) | ||
| (Throttle valve opening 3 %) | ||
| D position (When accelerating) | ||
| 5th gear | Lock-up ON | 47 - 53 km/h (29 - 33 mph) |
| Lock-up OFF | 45 - 52 km/h (28 - 32 mph) | |
| 4th gear | Lock-up ON | 36 - 41 km/h (22 - 25 mph) |
| Lock-up OFF | 34 - 40 km/h (21 - 25 mph) | |
| 3rd gear | Lock-up ON | 25 - 30 km/h (16 - 19 mph) |
| Lock-up OFF | 23 - 28 km/h (14 - 17 mph) | |
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.
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