Lexus GS300/400 (2000 year). Service manual - part 67
BE0GE–03
I04310
Wire Harness Side
I04189
Wire Harness Side
Connector ”B”
Connector ”D”
Connector ”C”
Connector ”A”
–
BODY ELECTRICAL
AUDIO SYSTEM
BE–217
2518
INSPECTION
1.
Except NAKAMICHI made:
INSPECT CD AUTO CHANGER CIRCUIT
Disconnect connectors from CD auto changer and inspect the
connector on the wire harness side.
Tester connection
Condition
Specified condition
8 – Ground
Constant
Continuity
5 – Ground
Constant
Battery positive voltage
10 – Ground
Ignition switch LOCK
No voltage
10 – Ground
Ignition switch ACC or ON
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.
HINT:
Check the wire harness between the radio receiver as-
sembly and the CD auto changer.
Since the signals to and from the MUTE, R
–
, R
+
, L
–
, L
+
,
TX
–
and TX
+
terminals are serial signals, they cannot or-
dinarily be measured with a tester.
2.
Except NAKAMICHI made:
INSPECT POWER AMPLIFIER CIRCUIT
Disconnect the connector from power amplifier and inspect the
connector on the wire harness side.
Tester connection
Condition
Specified condition
B7 – Ground
Constant
Continuity
C12 – Ground
Ignition switch LOCK and radio switch ON
No voltage
C12 – Ground
Ignition switch ACC or ON and radio switch ON
Battery positive voltage
B4 – Ground
Constant
Battery positive voltage
If the circuit is not as specified, inspect the circuits connected
to other parts.