ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT DRIVE BELT
2. BLEED POWER STEERING SYSTEM (a) Check the fluid level. (b) Jack up the front of the vehicle and support it with stands. (c) Turn the steering wheel. (1) With the engine stopped, turn the wheel slowly from lock to lock several times. (d) Lower the vehicle. (e) Start the engine. (f) Run the engine at idle for a few minutes. (g) Turn the steering wheel. (1) With the engine idling, turn the wheel left or right to the full lock position and keep it there for 2 to 3 seconds, and then turn the wheel to the opposite full lock position and keep it there for 2 to 3 seconds.*1 (2) Repeat *1 several times. (h) Stop the engine.
(j) Check the fluid level. 3. CHECK FLUID LEVEL
(b) With the engine stopped, check the fluid level in the reservoir. If necessary, add fluid. Fluid: ATF DEXRON II or III, or equivalent HINT: If the fluid is hot, check that the fluid level is within the HOT range. If the fluid is cold, check that the fluid level is within the COLD range. (c) Start the engine and run it at idle. (d) Turn the steering wheel from lock to lock several times to raise the fluid temperature. Fluid temperature: 80°C (176°F)
(g) Stop the engine. (h) Wait a few minutes and remeasure the fluid level in the reservoir. Maximum fluid level rise: 5.0 mm (0.197 in.) If the fluid level rise is more than the maximum, bleed the power steering system. (i) Check the fluid level. 4. CHECK STEERING FLUID PRESSURE (a) Disconnect the pressure feed tube from the vane pump (See page ). (b) Connect SST as shown in the illustration. SST: 09640-10010 09641-01010 09641-01030 09641-01060 NOTICE: Check that the valve of SST is in the open position. (c) Bleed the power steering system. (d) Start the engine and run it at idle. (e) Turn the steering wheel from lock to lock several times to raise the fluid temperature. Fluid temperature: 80°C (176°F)
(h) Measure the fluid pressure at engine speeds of 1000 rpm and 3000 rpm. Difference in fluid pressure: 490 kPa (5.0 kgf/cm2, 71 psi) or less NOTICE: Do not turn the steering wheel. If the pressure difference is above the specified range, check for fluid leaks and replace parts as necessary.
(j) Disconnect SST. SST: 09640-10010 09641-01010 09641-01030 09641-01060 (k) Connect the pressure feed tube (See page ). (l) Bleed the power steering system. |
Toyota Tundra Service Manual > Can Communication System: Steering Angle Sensor Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Steering Angle Sensor Communication Stop Mode Any of the following conditions are met: Communication stop for "Spiral cable (Spiral with sensor cable sub-assembly [steering angle sensor])" is indicated on the "Communication Bus Check" screen of the Tec ...