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. 51, located in the IPDM E/R)
• To back-up lamp relay terminals 1 and 3.

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 transmission gear selector lever in the R position, power is supplied

• To sonar control unit terminal 5
• From back-up lamp relay terminal 5.

With power and ground supplied, transmission gear 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 rate of tone from the sonar buzzer depending on distance of obstacle being sensed.