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 IS 350CFACTORY OEM SERVICE PROCEDURE
Service Data
| Line pressure (Fluid temperature): 50 to 80°C (122 to 176°F) Engine idling |
D position | 350 to 430 kPa (3.6 to 4.4 kgf/cm2 , 51 to 62 psi) |
| R position | 490 to 600 kPa (5.0 to 6.1 kgf/cm2 , 71 to 87 psi) | |
| Line pressure (Fluid temperature): 50 to 80°C (122 to 176°F) At stall speed (Throttle valve fully open) |
D position | 1290 to 1410 kPa (13.2 to 14.4 kgf/cm2 , 187 to 204 psi) |
| R position | 1460 to 1670 kPa (14.9 to 17.0 kgf/cm2 , 212 to 242 psi) | |
| Engine stall speed | D and R position | 2490 +/- 150 r/min |
| Time lag | N → D position | Less than 1.2 seconds |
| N → R position | Less than 1.5 seconds | |
| Engine idle speed (A/C OFF) | N position | 600 to 700 r/min |
| Drive plate runout | Max. | 0.30 mm (0.0118 in.) |
| Extension housing oil drive in depth from flat end | 1.8 to 2.2 mm (0.0709 to 0.0866 in.) | |
| Shift schedule | ||
| D position | - | |
| Throttle valve fully open | 1 → 2 | 49 to 58 km/h (30 to 36 mph) |
| 2 → 3 | 85 to 95 km/h (53 to 59 mph) | |
| 3 → 4 | 123 to 138 km/h (76 to 86 mph) | |
| 4 → 5 | 170 to 187 km/h (106 to 116 mph) | |
| 5 → 6 | 231 to 251 km/h (144 to 156 mph) | |
| Throttle valve opening 6% | 1 → 2 | 9 to 14 km/h (6 to 9 mph) |
| 2 → 3 | 13 to 17 km/h (8 to 11 mph) | |
| 3 → 4 | 27 to 32 km/h (17 to 20 mph) | |
| 4 → 5 | 35 to 40 km/h (22 to 25 mph) | |
| 5 → 6 | 60 to 66 km/h (37 to 41 mph) | |
| Manual downshift speed | ||
| 5, 4, 3, 2, 1 gear range | → 5 | 231 to 248 km/h (144 to 154 mph) |
| → 4 | 183 to 198 km/h (114 to 123 mph) | |
| → 3 | 130 to 142 km/h (81 to 88 mph) | |
| → 2 | 83 to 94 km/h (52 to 58 mph) | |
| → 1 | 41 to 47 km/h (25 to 29 mph) | |
NOTE:
- All shift point values indicated in the above tables are actual values. Therefore, if checking a shift point with a chassis dynamometer, keep in mind that there is a range of error in the chassis dynamometer indication.
- If checking a shift point against the speed indicated on the speedometer, remember to consider the speedometer correction rate and range of error in the tester indication.
TRANSMISSION REVOLUTION SENSOR
| Item | Tester connection Condition |
Specified Condition |
|---|---|---|
| Transmission revolution sensor NT | 1 - 2 20°C (68°F) |
560 to 680 Ω |
| Transmission revolution sensor SP2 | 1 - 2 20°C (68°F) |
560 to 680 Ω |
TRANSMISSION WIRE
| Tester connection | Condition | Specified Condition |
|---|---|---|
| 1 (E2) - 9 (OIL) | 10°C (50°F) | 5 to 8 kΩ |
| 1 (E2) - 9 (OIL) | 25°C (77°F) | 2.5 to 4.5 kΩ |
| 1 (E2) - 9 (OIL) | 110°C (230°F) | 0.22 to 0.28 kΩ |
SHIFT SOLENOID VALVE
| Item | Tester connection Condition |
Specified Condition |
|---|---|---|
| Shift solenoid valve SL1 | 1 - 2 20°C (68°F) |
5.0 to 5.6 Ω |
| Shift solenoid valve S1 | Solenoid Connector (S1) - Solenoid Body (S1) 20°C (68°F) |
11 to 15 Ω |
| Shift solenoid valve S2 | Solenoid Connector (S2) - Solenoid Body (S2) 20°C (68°F) |
11 to 15 Ω |
| Shift solenoid valve S3 | Solenoid Connector (S3) - Solenoid Body (S3) 20°C (68°F) |
11 to 15 Ω |
| Shift solenoid valve S4 | Solenoid Connector (S4) - Solenoid Body (S4) 20°C (68°F) |
11 to 15 Ω |
| Shift solenoid valve SL2 | 1 - 2 20°C (68°F) |
5.0 to 5.6 Ω |
| Shift solenoid valve SR | Solenoid Connector (SR) - Solenoid Body (SR) 20°C (68°F) |
11 to 15 Ω |
| Shift solenoid valve SLT | 1 - 2 20°C (68°F) |
5.0 to 5.6 Ω |
| Shift solenoid valve SLU | 1 - 2 20°C (68°F) |
5.0 to 5.6 Ω |
PARK/NEUTRAL POSITION SWITCH
| Tester connection | Condition | Specified Condition |
|---|---|---|
| 2 - 6 and 4 - 5 | P | Below 1 Ω |
| Except P | 10 kΩ or higher | |
| 1 - 2 | R | Below 1 Ω |
| Except R | 10 kΩ or higher | |
| 2 - 9 and 4 - 5 | N | Below 1 Ω |
| Except N | 10 kΩ or higher | |
| 2 - 7 | D, S, "+" or "-" | Below 1 Ω |
| Except D, S, "+" and "-" | 10 kΩ or higher |
SHIFT PADDLE SWITCH
| Tester connection | Condition | Specified Condition |
|---|---|---|
| SFTU - ECC | Pull continuously "+" (Upshift) | Below 1 Ω |
| Release "+" (Upshift) | 10 kΩ or higher | |
| SFTD - ECC | Pull continuously "-" (Downshift) | Below 1 Ω |
| Release "-" (Downshift) | 10 kΩ or higher |
PATTERN SELECT SWITCH
| Tester connection | Condition | Specified Condition |
|---|---|---|
| 3 - 7 | Pattern select switch (PWR) | Below 1 Ω |
| Pattern select switch (NORM) | 10 kΩ or higher | |
| 1 - 3 | Press continuously pattern select switch (SNOW) | Below 1 Ω |
| Release pattern select switch (SNOW) | 10 kΩ or higher |
AUTOMATIC TRANSMISSION UNIT
| 1st and reverse return spring free length | Standard: 23.74 mm (0.935 in.) |
| Rear planetary gear pinion thrust clearance | Standard: 0.2 to 0.6 mm (0.00787 to 0.0236 in.) |
| Rear planetary gear bushing inside diameter | Standard: 20.025 mm (0.788 in.) |
| 1st and reverse brake pack clearance | 0.4 to 0.7 mm (0.0157 to 0.0276 in.) |
| Flange thickness (1st and reverse brake) | Mark 0: 0 mm (0 in.) Mark 1: 0.17 mm (0.00669 in.) Mark 3: 0.31 mm (0.0122 in.) Mark 4: 0.45 mm (0.0177 in.) Mark 5: 0.59 mm (0.0232 in.) Mark 7: 0.73 mm (0.0287 in.) Mark 8: 0.87 mm (0.0343 in.) Mark 10: 1.01 mm (0.0398 in.) Mark 11: 1.15 mm (0.0453 in.) Mark 12: 1.29 mm (0.0508 in.) Mark 14: 1.43 mm (0.0563 in.) |
| Intermediate shaft run out | Standard: 0.03 mm (0.00118 in.) A, B, C, D |
| Intermediate shaft diameter | Standard A: 25.962 to 25.975 mm (1.02212 to 1.02264 in.) Standard B: 25.962 to 25.975 mm (1.02212 to 1.02264 in.) Standard C: 32.062 to 32.075 mm (1.26228 to 1.26279 in.) Standard D: 32.062 to 32.075 mm (1.26228 to 1.26279 in.) |
| Rear planetary ring gear flange bushing inside diameter | Standard: 32.19 mm (1.27 in.) |
| Center planetary gear pinion thrust clearance | Standard: 0.12 to 0.68 mm (0.00472 to 0.026772 in.) |
| No. 2 Brake piston return spring free length | Standard: 22.66 mm (0.892 in.) |
| No. 2 Brake piston stroke | 0.6 to 0.9 mm (0.0236 to 0.0354 in.) |
| Flange thickness (No. 2 brake piston) | Mark 0: 2.0 mm (0.0787 in.) Mark 1: 2.1 mm (0.0827 in.) Mark 2: 2.2 mm (0.0866 in.) Mark 3: 2.3 mm (0.0906 in.) Mark 4: 2.4 mm (0.0945 in.) Mark 5: 2.5 mm (0.0984 in.) Mark 6: 2.6 mm (0.102 in.) Mark 7: 2.7 mm (0.106 in.) |
| Brake piston return spring free length | Standard: 17.05 mm (0.671 in.) |
| Front planetary gear pinion thrust clearance | Standard: 0.20 to 0.60 mm (0.00787 to 0.0236 in.) |
| Front planetary gear bushing inside diameter | Standard: 57.43 mm (2.26 in.) |
| No. 1 Brake piston stroke | 0.42 to 0.72 mm (0.0165 to 0.0283 in.) |
| Flange thickness (No. 1 brake piston) | Mark 0: 2.0 mm (0.0787 in.) Mark 1: 2.2 mm (0.0866 in.) Mark 2: 2.4 mm (0.0945 in.) Mark 3: 2.6 mm (0.102 in.) |
| No. 3 Brake piston return spring free length | Standard: 15.72 mm (0.619 in.) |
CLUTCH DRUM AND INPUT SHAFT
| Direct clutch return spring free length | Standard: 19.51 mm (0.768 in.) |
| Reverse clutch return spring free length | Standard: 21.04 mm (0.828 in.) |
| No. 2 Direct clutch pack clearance | 0.5 to 0.8 mm (0.0197 to 0.0315 in.) |
| Flange thickness (Direct clutch) | Mark 2: 3.0 mm (0.118 in.) Mark 3: 3.1 mm (0.122 in.) Mark 4: 3.2 mm (0.126 in.) Mark 5: 3.3 mm (0.130 in.) Mark 6: 3.4 mm (0.134 in.) Mark 7: 3.5 mm (0.138 in.) Mark 8: 3.6 mm (0.142 in.) Mark 9: 3.7 mm (0.146 in.) Mark A: 3.8 mm (0.150 in.) |
| No. 3 Clutch pack clearance | 0.5 to 0.8 mm (0.0197 to 0.0315 in.) |
| Flange thickness (No. 3 clutch) | Mark 0: 2.8 mm (0.110 in.) Mark 1: 2.9 mm (0.114 in.) Mark 2: 3.0 mm (0.118 in.) Mark 3: 3.1 mm (0.122 in.) Mark 4: 3.2 mm (0.126 in.) Mark 5: 3.3 mm (0.130 in.) Mark 6: 3.4 mm (0.134 in.) Mark 7: 3.5 mm (0.138 in.) Mark 8: 3.6 mm (0.142 in.) Mark 9: 3.7 mm (0.146 in.) Mark A: 3.8 mm (0.150 in.) |
| Forward clutch return spring free length | Standard: 24.64 mm (0.970 in.) |
| Coast clutch pack clearance | 0.3 to 0.6 mm (0.0118 to 0.0236 in.) |
| Flange thickness (Coast clutch) | Mark 0: 3.0 mm (0.118 in.) Mark 1: 3.1 mm (0.122 in.) Mark 2: 3.2 mm (0.126 in.) Mark 3: 3.3 mm (0.130 in.) Mark 4: 3.4 mm (0.134 in.) Mark 5: 3.5 mm (0.138 in.) Mark 6: 3.6 mm (0.142 in.) Mark 7: 3.7 mm (0.146 in.) Mark 8: 3.8 mm (0.150 in.) Mark 9: 3.9 mm (0.154 in.) |
| No. 1 Clutch pack clearance | 0.56 to 0.86 mm (0.0220 to 0.0339 in.) |
| Flange thickness (Forward clutch) | Mark 0: 3.0 mm (0.118 in.) Mark 1: 3.1 mm (0.122 in.) Mark 2: 3.2 mm (0.126 in.) Mark 3: 3.3 mm (0.130 in.) Mark 4: 3.4 mm (0.134 in.) Mark 5: 3.5 mm (0.138 in.) Mark 6: 3.6 mm (0.142 in.) Mark 7: 3.7 mm (0.146 in.) Mark 8: 3.8 mm (0.150 in.) Mark 9: 3.9 mm (0.154 in.) Mark A: 4.0 mm (0.158 in.) |
| Forward clutch hub inside diameter | Standard: 26.037 to 26.062 mm (1.02508 to 1.02606 in.) |
| Reverse clutch hub inside diameter | Standard: 35.812 to 35.837 mm (1.40992 to 1.41090 in.) |
ACCUMULATOR
| Spring | Free Length/Outer Diameter mm (in.) | Color |
|---|---|---|
| B1 (Inner) | 44.98 (1.77)/11.30 (0.445) | Natural |
| B1 (Outer) | 46.36 (1.83)/17.10 (0.673) | Natural |
| C2 | 63.14 (2.49)/16.0 (0.630) | Light Gray |
| B3 | 64.5 (2.54)/19.5 (0.768) | Orange |
| C3 (Inner) | 44.0 (1.73)/14.0 (0.551) | Yellow |
| C3 (Outer) | 76.65 (3.02)/20.10 (0.791) | Natural |
OUTPUT SHAFT BEARING
| Clearance | 0.02 to 0.12 mm (0.000787 to 0.00472 in.) |
| Flange thickness | No. 1: 3.80 mm (0.150 in.) No. 2: 3.85 mm (0.152 in.) No. 3: 3.90 mm (0.154 in.) No. 4: 3.95 mm (0.156 in.) No. 5: 4.00 mm (0.157 in.) No. 6: 4.05 mm (0.159 in.) No. 7: 4.10 mm (0.161 in.) No. 8: 4.15 mm (0.163 in.) No. 9: 4.20 mm (0.165 in.) No. 10: 4.25 mm (0.167 in.) No. 11: 4.30 mm (0.169 in.) No. 12: 4.35 mm (0.171 in.) |
OIL PUMP
| Oil pump body bushing inside diameter | Standard: 38.138 mm (1.50 in.) |
| Stator shaft bushing inside diameter | Standard (Front side): 21.527 mm (0.848 in.) Standard (Rear side): 32.03 mm (1.26 in.) |
| Body clearance | Standard: 0.10 to 0.17 mm (0.00394 to 0.00669 in.) |
| Tip clearance | Standard: 0.070 to 0.150 mm (0.00276 to 0.00591 in.) |
| Side clearance | Standard: 0.03 to 0.05 mm (0.00118 to 0.00197 in.) |
| Drive and driven gear thickness | Mark 0: 10.736 to 10.742 mm (0.42268 to 0.42291 in.) Mark 1: 10.743 to 10.749 mm (0.42296 to 0.42319 in.) Mark 2: 10.750 to 10.756 mm (0.42323 to 0.42346 in.) Mark 3: 10.757 to 10.763 mm (0.42350 to 0.42374 in.) Mark 4: 10.764 to 10.770 mm (0.42378 to 0.42401 in.) Mark 5: 10.771 to 10.777 mm (0.42405 to 0.42429 in.) Mark 6: 10.778 to 10.784 mm (0.42433 to 0.42457 in.) |
| Front oil pump oil seal drive in depth | -0.2 to 0.2 mm (-0.00787 to 0.00787 in.) |
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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