Operation CHARM: Car repair manuals for everyone.

Scantool Diagnostics





Head Unit

U1540 Wakeup Line Test Failed at Amplifier Unit - Scantool Diagnostics

Monitor Scantool Data

1. Connect scantool to Data Link Connector (DLC).
2. IG "ON" & Engine "OFF"
3. Select "Ring break diagnosis " in Inspection / Test option and monitor "Test results".
4. Checking the component status by "Wake up line diagnosis"
























FIG.1) Ring break diagnosis
FIG.2) Ring break diagnosis between TV Tuner and Head Unit
FIG.3) Start of XdB Test
FIG.4) Result of X dB Test
FIG.5) Test of Wake up line diagnosis
FIG.6) Result of Wake up line test
5. Has a problem been found at wake up line?