DESCRIPTION This circuit is the power source circuit to operate the clearance warning ECU assembly. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: Inspect the fuses for circuits related to this system before performing the following procedure. PROCEDURE
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Remove the back sonar or clearance sonar switch assembly (See page
(b) Inspect the back sonar or clearance sonar switch assembly (See page
(a) Disconnect the J35 clearance warning ECU assembly connector. (b) Disconnect the J125 back sonar or clearance sonar switch assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
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Toyota Tundra Service Manual > Meter / Gauge System: Open in Turn Signal Circuit (B1507,B1508)
DESCRIPTION DTC Code DTC Detection Condition Trouble Area B1507 Open in turn signal light circuit. for Standard Type Outer Rear View Mirror: Harness or connector Front turn signal light bulb socket Rear turn signal light bulb socket Outer rear view mirror assembly (w/ Turn Signal Indicator) Outer re ...