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DTC Diagnosis Procedure
1.CHECK CONNECTOR
  1. Turn the ignition switch OFF.
  2. Disconnect the battery cable from the negative terminal.
  3. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side).
    • BOSE speaker amp.
Is the inspection result normal?
GO TO 2Work Flow.
Repair the terminal and connector.
 
2.CHECK HARNESS FOR OPEN CIRCUIT
  1. Disconnect the connector of BOSE speaker amp.
  2. Check the resistance between the BOSE speaker amp. harness connector terminals.
    BOSE speaker amp. harness connectorResistance (Ω)
    Connector No.Terminal No.
    B372223Approx. 54 – 66
Is the measurement value within the specification?
.
Repair the BOSE speaker amp. branch line.
 
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BOSE speaker amp. Refer to Diagnosis Procedure.
Is the inspection result normal?
(Present error)Replace the BOSE speaker amp. Refer to Removal and Installation.
(Past error)Error was detected in the BOSE speaker amp. branch line.
Repair the power supply and the ground circuit.