Signal Too High / Signal Missing

Signal too high / Signal missing

Checking components and wiring
Check the signal cable (carphone mute). Check between accessory control module terminal #B12 and the radio connector. Check for a short-circuit to supply voltage. Check for an open-circuit.
Remedy as necessary.

Other information:
- To connect the breakout box, see Connecting the breakout box. Accessory electronic module Connecting the Breakout Box, Accessory Electronic Module (AEM)
- To access or replace the Accessory Electronic Module (AEM) and connector, see Accessory electronic module (AEM), replacing Accessory Electronic Module (AEM)
- For information about signals, see Signal description. Accessory electronic module (AEM) Signal Description, Accessory Electronic Module (AEM)
- To fault-trace wiring and terminals see Checking wiring and terminals Checking Wiring And Terminals










Continue - Verification

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Verification




Verification

Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reconnect the components, connectors etc.
- Ignition on.
If the car is equipped with an original Volvo radio, check the carphone mute function in the accessory electronic module by clicking on the VCT2000 symbol while the radio is on.
If the car is not equipped with an original Volvo radio, the carphone mute function is tested by making a call to the carphone while the radio is on.





Does the system function?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - Fault Found

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information




Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking components and wiring

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