LEMON Manuals: Even more car manuals for everyone
Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Electrical >> Gauges >> Audio Module (AUM) & Phone Module (PHM) Diagnostic Trouble Codes >> AUM-4002: Amplifier, Main Antenna. Signal Too High. Intermittent Fault (1999-2006) >> Signal too high. Intermittent fault >> Checking contact resistance, oxidation and wiring

Checking contact resistance, oxidation and wiring

Remedy the antenna amplifier and head unit/audio control module connectors for contact resistance and oxidation according to Contact resistance and oxidation .

Check cables between the antenna amplifier #C1 and head unit/audio control module #A9 for a short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Remedy as necessary.

Other information: 

Fig 1: Identifying Breakout Box
GLL100304Courtesy of VOLVO CARS OF NORTH AMERICA.
Fig 2: Identifying Ohmmeter
GLL101042Courtesy of VOLVO CARS OF NORTH AMERICA.