INSPECTION PROCEDURE 1. INSPECT FRONT PROPELLER SHAFT ASSEMBLY (a) Check that the propeller shaft is not damaged or deformed.
(b) Using a dial indicator, check the propeller shaft runout. Maximum runout: 0.61 mm (0.0240 in.) 2. INSPECT UNIVERSAL JOINT SPIDER BEARING (a) Check that the joints move smoothly. (b) Check the spider bearings for wear and damage. (c) Check the spider bearing axial play by turning the yoke while holding the shaft tightly. Maximum bearing axial play: 0.05 mm (0.00197 in.)
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Toyota Tundra Service Manual > Intuitive Parking Assist System: Front Clearance Sonar Sensor RH Circuit
DESCRIPTION The No. 1 ultrasonic sensor sends and receives ultrasonic waves. Based on the received wave, the sensor calculates the approximate distance value between the vehicle and the obstacle, and sends the distance value as a signal to the clearance warning ECU assembly. WIRING DIAGRAM PROCEDURE ...