Fusion AWD V6-3.0L (2009)
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the
network test with the scan tool.
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Pinpoint Test L: The Audio Digital Signal Processing (DSP) Module Does Not Respond to the Scan
Tool
Communications Network
Pinpoint Tests
Pinpoint Test L: The Audio Digital Signal Processing (DSP) Module Does Not Respond To The Scan Tool
Normal Operation
The audio Digital Signal Processing (DSP) module communicates with the scan tool through the Medium Speed Controller Area Network (MS-CAN).
Circuits VDB06 (GY/OG) (MS-CAN +) and VDB07 (VT/OG) (MS-CAN -) provide the network connection to the DSP module. Voltage for the audio
DSP module amplifier is provided by circuits SBB20 (GN/RD) and SBB21 (GY/RD). Circuit GD148 (BK/YE) provides ground.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
Audio DSP module
PINPOINT TEST L: PINPOINT TEST L: THE AUDIO DSP MODULE DOES NOT RESPOND TO THE SCAN TOOL
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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L1 CHECK THE AUDIO DSP MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
-
Ignition OFF.
-
Disconnect: Audio DSP Module C4326b.
-
Ignition ON.
-
Measure the voltage between the audio DSP module, harness side and ground as follows:
-
Are the voltages greater than 10 volts?
Yes
GO to L2.
No
VERIFY the Battery Junction Box (BJB) fuse 20 (20A) or fuse 21 (20A) is OK. If OK, REPAIR the circuit in question. CONNECT the PCM. CLEAR
the DTCs. REPEAT the network test with the scan tool.
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L2 CHECK THE AUDIO DSP MODULE GROUND CIRCUITS FOR AN OPEN
