Diagnosis Procedure
- CHECK SELF-DIAGNOSTIC RESULT OF ECM
With CONSULT
Check "Self Diagnostic Result" of "ENGINE" using CONSULT.
Is any DTC detected?
YES
Perform trouble diagnosis for detected DTC. Refer to DTC INDEX .
NO
GO TO STEP 2 .
- CHECK HARNESS CONTINUITY BETWEEN BOSE AMP. AND ECM
- Turn ignition switch OFF.
- Disconnect BOSE amp. and ECM harness connector.
- Check the continuity between BOSE amp. harness connector and ECM harness connector.
BOSE amp. ECM Continuity Connector Terminal Connector Terminal B55 78 M37 110 Existed
Is inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace malfunctioning parts.
- CHECK HARNESS CONTINUITY BETWEEN BOSE AMP. AND GROUND
Check the continuity between BOSE amp. harness connector and ground.
BOSE amp. Ground Continuity Connector Terminal B55 78 Not existed Is inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace malfunctioning parts.
- CHECK VOLTAGE BETWEEN BOSE AMP. AND GROUND
Check the voltage between BOSE amp. harness connector and ground.
Terminals Voltage
(Approx.)(+) (-) BOSE amp. Connector Terminal B55 78 Ground 0 V Is inspection result normal?
YES
Replace BOSE amp. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace malfunctioning parts.