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The aerial enable/amplifier on signal is a class 2 signal sent from the radio through the rear seat audio (RSA) module, when equipped. The amplifier will reach full output capabilities 900 milliseconds after receiving this signal. The amplifier will then be capable of class 2 functions 60 milliseconds after being turned ON. This DTC will be set if the circuit is shorted to ground or battery.
This diagnostic procedure supports the following DTC:
DTC B1235 Amplifier On Signal Circuit
This test is run at least every 50 milliseconds.
The failure must occur for at least 3 seconds.
The aerial enable/amplifier on signal circuit becomes disabled, causing the controlled module to become inoperative.
The failure criteria is no longer detected for 50 milliseconds.
The numbers below refer to the step numbers on the diagnostic table.
This step helps to determine if the Diversity Aerial System is operating.
This step helps to determine if radio aerial module is receiving the proper signal from the radio.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference:Radio/Navigation System Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
Do the local AM/FM stations come in clearly? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | |
Did you locate and correct the condition? | Go to Step 4 | Go to Testing for Intermittent Conditions and Poor Connections | |
4 | Operate the system in order to verify the repair. Did you complete the repair? | System OK | - |
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