1991 LEXUS SC400 Service Repair Manual

Page 593 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Circuit)
Disconnect  the control panel connector and inspect the con-
nector on wire harness side as shown.
Check forTester connectionConditionSpecified value
Voltage2±GroundLight control switch po

Page 594 of 4087

LEXUS SC400 1991  Service Repair Manual 
(With CD player)
Check forTester connectionConditionSpecified value
VoltageA4±GroundConstantBattery voltage
A3±GroundIgnition switch positionACC or ONBattery voltageg
LOCKNo voltage
A2±GroundLight

Page 595 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Woofer)
REMOVAL AND INSTALLATION OF
WOOFER
1. REMOVE WOOFER(a)  Remove woofer cover together with high mount stoplight.
(b)  Remove four bolts.
(c)  Disconnect connector and remove woofer.
2. INSTAL

Page 596 of 4087

LEXUS SC400 1991  Service Repair Manual 
(c)  Disconnect the connector and remove the wooferamplifier.
2.  INSTALL WOOFER AMPLIFIER For installation, follow the removal procedure in reverse.
INSPECTION OF WOOFER AMPLIFIER
INSPECT WOOFER AMP

Page 597 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Nakamichi)
1.  REMOVE POWER AMPLIFIER
(a)  Remove the RH side cover.
(b)  Remove the CD auto changer (See page BE±212).
(c)  Disconnect  three connectors and remove three nuts and the power amplifi

Page 598 of 4087

LEXUS SC400 1991  Service Repair Manual 
(Produced by NAKAMICHI)
 Check for Tester connection Condition Specified value 

Continuity 

Page 599 of 4087

LEXUS SC400 1991  Service Repair Manual 
 
Check for Tester connection Condition Specified value
 Voltage A4±Ground 

Page 600 of 4087

LEXUS SC400 1991  Service Repair Manual 
MOTOR ANTENNA
MOTOR ANTENNA REMOVAL AND
INSTALLATION
1. REMOVE MOTOR ANTENNA
(a)  Remove the antenna nut.
(b)  Remove the LH side cover.
(c)  Disconnect  the motor antenna connector and the antennaco