DTC Diagnosis Procedure
1.
CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
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 2
Work Flow
.
Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
Disconnect the connector of BOSE speaker amp.
Check the resistance between the BOSE speaker amp. harness connector terminals.
BOSE speaker amp. harness connector
Resistance (Ω)
Connector No.
Terminal No.
B37
22
23
Approx. 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.