System Description: Function

With the ignition switch in the ON or START position, power is supplied

• through 10A fuse [No. 12, located in the fuse block (J/B)]
• to sonar control unit terminal 8, and
• through 10A fuse [No. 14, located in the fuse block (J/B)]
• to park/neutral position (PNP) switch terminal 2.

Ground is supplied

• to sonar control unit terminal 6
• through body grounds B7 and B19.

With the ignition switch in the ON or START position, and the selector lever in the R position, power is supplied

• to sonar control unit terminal 5
• from park/neutral position (PNP) switch terminal 4.

With power and ground supplied, selector lever in R position, and the rear sonar system OFF switch ON, the rear sonar system will detect obstacles within 1.8 m (5.9 ft) of the rear sonar sensors. The vehicle operator is notified of obstacles by varied lengths of tone from the sonar buzzer depending on distance of obstacle being sensed.