Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT BACK SONAR OR CLEARANCE SONAR SWITCH ASSEMBLY

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Switch Condition	Specified Condition
7 (IG) - 8 (SK)	Sonar switch off	10 kΩ or higher
7 (IG) - 8 (SK)	Sonar switch on	Below 1 Ω

If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

(b) Check that the switch illuminates.

OK:

Tester Connection

Specified Condition

Battery positive (+) → Terminal 1 (ILL+)

Battery negative (-) → Terminal 6 (ILL-)

Illuminates

If the result is not as specified, replace the back sonar or clearance sonar switch assembly.

Text in Illustration

*a	Component without harness connected (Back Sonar or Clearance Sonar Switch Assembly)

Toyota Tundra Service Manual > Audio And Visual System: Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION The No. 1 stereo jack adapter assembly sends an external device sound signal to the radio and display receiver assembly through this circuit. The sound signal that has been sent is amplified by the radio and display receiver assembly and then is sent to the speakers. If there is an open ...

Toyota Tundra Owners Manual