PRECAUTION 1. HANDLING PRECAUTIONS FOR STEERING SYSTEM (a)
The vehicle is equipped with an SRS (Supplemental Restraint System)
such as airbags. Failure to carry out service operations in the correct
sequence could cause the SRS to unexpectedly deploy during servicing.
This may cause a serious accident. Before servicing (including
inspection, replacement, removal and installation of parts), be sure to
read the precautionary notices for the Supplemental Restraint System
(See page 2. PRECAUTIONS FOR REMOVAL, INSTALLATION AND REPLACEMENT OF POWER STEERING COMPONENTS (a) Be sure to turn the front wheels straight ahead when removing and installing the power steering link assembly. (b) If disconnecting the steering sliding yoke and the pinion shaft of the power steering link assembly, be sure to put matchmarks on them before starting the operation. |
Toyota Tundra Service Manual > Sfi System: ECM Power Source Circuit
DESCRIPTION When the ignition switch is turned to ON, the battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes a current to flow to the coil, closing the contacts of the integration relay (EFI relay) and supplying power to terminals + ...
