Lexus SC300 / Lexus SC400. Service manual - part 203

Parts Location (Cont’d)

–

BODY ELECTRICAL SYSTEM

Power Source

BE–13

Parts Location (Cont’d)

BE–14

–

BODY ELECTRICAL SYSTEM

Power Source

Wiring Diagram

–

BODY ELECTRICAL SYSTEM

Power Source

BE–15

Replacement of Relays
REPLACEMENT OF RELAY IN RELAY
BLOCK NO. 1, NO. 4 and NO. 5

1. 

REMOVE FOLLOWING PARTS:
(See page 

BO–112

)

(a)  No. 1 under cover.
(b) Door 

scuff 

plate.

(c) Floor 

carpet.

2. 

REMOVAL AND INSTALLATION OF RELAY

(a)  Remove the junction block No. 1 set bolts.
(b) Disconnect 

connectors.

(c)  Separate the relay block No. 4 and No. 5 from the junction

block No. 1.

(d)  For installation follow the removal procedure in reverse.

Replacement of Relay Block No. 2
(A)

REPLACEMENT OF RELAY BLOCK NO. 2
(A) IN RELAY BLOCK NO. 2

1. 

REMOVE RELAY BLOCK NO. 2 (A)

(a)  Remove the battery.

CAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ”LOCK” position and negative (–) terminal
cable is disconnected from the battery.

(b)  Remove the relay block No. 2 cover.
(c)  Pry loose two locking lugs and remove the nut.
2. 

INSTALL RELAY BLOCK NO. 2 (A)
For installation follow removal procedure in reverse.

BE–16

–

BODY ELECTRICAL SYSTEM

Power Source