XC90 AWD L6-3.2L VIN 98 B6324S (2007)
The Integrated Audio Module (IAM) has a ground input. The ground input from the control module is connected via a ground cable to the ground
terminal in the body. For further information on ground terminals, see the relevant wiring diagram.
Ground input 1 (#A8) is power ground and connected to the ground connection in the body.
Checking the ground terminal
Check the ground cable between Integrated Audio Module (IAM) terminal (#A8) and the ground terminal. Check for an open-circuit. Check for loose
connections. Check for contact resistance and oxidation. With the ignition on, the drop in voltage between the ground connection for the Integrated
Audio Module (IAM) and the ground terminal must not be greater than 0.5 V.
Remedy as necessary.
Signal specification See: Pinout Values and Diagnostic Parameters/Signal Description/Signal Description, Integrated Audio Module (IAM)
See the relevant wiring diagram for information about circuits and ground terminals in the bodywork.
Checking wiring and terminals See: Testing and Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals
Continue - DONE
Vehicle Communication Information, Audio Module (AUM)
Description of frozen values
Not all the parameters described need to be implemented in the control module. This varies from system to system.
Frozen values are parameter values that are stored when a diagnostic trouble code (DTC) is stored.
Battery voltage, value
Measurement range: 5-24 V.
Normal value when the alternator is charging: 13.0-14.5 V.