DESCRIPTION This circuit is the power source circuit for the combination meter assembly. This circuit provides 2 power source types: one is a constant power source mainly used as a backup power source, and other is a power source mainly used for signal transmission. The constant power source is mainly used as a backup power source of the meter CPU. However, it is also used for communication. If a voltage of 12 V is not applied to terminal IG+ when the ignition switch ON, the indicator will not operate. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing procedure. PROCEDURE
![]()
(a) Disconnect the J28 combination meter assembly connector. (b) Measure the resistance and voltage according to the value(s) in the table below. Standard Resistance:
Standard Voltage:
|
Toyota Tundra Service Manual > Clearance Sonar Main Switch: Components
COMPONENTS ILLUSTRATION *1 BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY *2 COWL SIDE TRIM BOARD LH *3 FRONT DOOR SCUFF PLATE LH *4 INSTRUMENT SIDE PANEL LH *5 LOWER INSTRUMENT PANEL FINISH PANEL SUB-ASSEMBLY LH *6 NO. 2 SWITCH HOLE BASE ...