PINPOINT TEST L : The Audio DSP Module Does Not Respond To The Scan Tool
NOTE:
Failure to disconnect the battery when instructed will result in false resistance readings. REFER to Battery, Mounting and Cables
- L1 CHECK THE AUDIO DSP MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: Audio DSP Module C3154C.
- Ignition ON.
Are the voltages greater than 11 volts?
Yes GO to L2. No VERIFY the BCM fuse 5 (20A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short. - L2 CHECK THE AUDIO DSP MODULE GROUND CIRCUITS FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
Are the resistances less than 3 ohms?
Yes GO to L3. No REPAIR the circuit in question. - L3 CHECK THE I-CAN CIRCUITS BETWEEN THE AUDIO DSP MODULE AND THE IPC FOR AN OPEN
- Disconnect: Audio DSP Module C3154A.
- Disconnect: IPC.
Are the resistances less than 3 ohms?
Yes CONNECT the negative battery cable. GO to L4. No REPAIR the circuit in question. - L4 CHECK FOR CORRECT AUDIO DSP MODULE OPERATION
- Ignition OFF.
- Disconnect and inspect the audio DSP module connectors and related in-line connectors.
- Repair:
- corrosion (replace connector or terminals - clean module pins)
- damaged or bent pins - replace terminals/pins
- pushed-out pins - replace pins as necessary
- Reconnect the audio DSP module connectors and related in-line connectors. Make sure they seat and latch correctly.
- Operate the system and verify the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new audio DSP module. REFER to Information and Entertainment Systems Sony Sound . No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
