Check the Supplies and Grounds to the Amplifier

: CHECK THE SUPPLIES AND GROUNDS TO THE AMPLIFIER

G239843t51 : CHECK THE PERMANENT SUPPLY TO THE AMPLIFIER
1. Disconnect the amplifier electrical connector, TL09.
2. Measure the voltage between TL09, pins 03 and 09 (NR) and GROUND.

- Is the voltage less than 10 volts?

-> Yes
REPAIR the circuit between the amplifier and battery. This circuit includes the rear power distribution box (fuse 34). TEST the system for normal operation.

-> No

G239843t52 : CHECK THE GROUND TO THE AMPLIFIER
1. Measure the resistance between TL09, pins 02 and 08 (B) and GROUND.

- Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. TEST the system for normal operation.

-> No
CHECK for DTCs indicating a wake-up circuit or optical ring fault. REFER to the DTC index.