Lexus SC300 / Lexus SC400. Manual - part 652

(c)  Install the clamps on the high–tension cords to the

high–tension cord cover.

(d)  Connect the high–tension cord to the RH ignition coil.

17.  INSTALL RH NO.3 TIMING BELT COVER

(a)  Install the three gaskets to the timing belt cover.
(b)  Fit portion A of the timing belt cover, matching it with the

lower high–tension cord cover.

(c)  Install the timing belt cover with the three bolts.

18.  INSTALL VSV FOR EVAP SYSTEM

Install the VSV with the two bolts.

19.  INSTALL LH NO.3 TIMING BELT COVER

(a)  Install the three gaskets to the timing belt cover.
(b)  Install the cord grommet to the high–tension cord.
(c)  Install the cord grommet to the timing belt cover.
(d)  Fit portion A of the timing belt cover, matching it with the

lower high–tension cord cover.

(e)  Install the timing belt cover with the four bolts.

20.  INSTALL RH ENGINE WIRE COVER

(a)  Fit portions A and B of the engine wire cover, matching

them with the lower high–tension cord cover and No.3
timing belt cover.

(d)  Install the engine wire cover with the bolt.

ST–32

–

STARTING SYSTEM

Starter

21.  INSTALL LH ENGINE WIRE COVER

(a)  Connect portions A and B engine wire cover to the wire

brackets.

(b)  Set the VSV (for fuel pressure control system) wire in

original position.

(c)  Fit portions C and D of the engine wire cover, matching

them with the lower high–tension cord cover and No.3
timing belt cover.

(d)  Install the engine wire cover with the two bolts.

22.  INSTALL UPPER HIGH–TENSION CORD COVER

(a)  Fit portion A of the upper high–tension cover, matching

it with the top of the lower high–tension cord cover.

(b)  Push the front side of the high–tension cord cover, and

connect the front side claw groove of the upper
high–tension cord cover to the claw of the lower
high–tension cord cover.

(c)  Install the upper high–tension cord cover with the two

bolts.

23.  INSTALL INTAKE AIR CONNECTOR

(a)  Connect the end portions of the intake air connector to

the throttle body and air cleaner hose.

(b)  Tighten the two hose clamps.
(c)  Install the bolt holding the intake air connector to the

cylinder head cover.

(d)  Connect the following hoses:

(1)  Air hose to ISC valve
(2)  Air hose (from PS air control valve) to intake air 

connector

–

STARTING SYSTEM

Starter

ST–33

24.  CONNECT CONTROL CABLES TO THROTTLE BODY

Connect the following hoses:

(1) Accelerator 

cable

(2)  A/T throttle control cable
(3)  (w/ Cruise Control System)

Cruise control actuator cable

25.  INSTALL THROTTLE BODY COVER

Install the throttle body cover and hose clamp with the two
bolts and cap nut.

26.  CONNECT CABLE TO NEGATIVE TERMINAL OF

BATTERY

27.  FILL WITH ENGINE COOLANT (See page 

CO–7

)

28.  CHECK THAT ENGINE STARTS

ST–34

–

STARTING SYSTEM

Starter

STARTER RELAY

INSPECTION OF STARTER RELAY

1. 

DISCONNECT CABLE FROM NEGATIVE TERMINAL OF
BATTERY
CAUTION: Work must be started after approx. 20 seconds or
longer from the time the ignition switch is turned to the
”LOCK” position and the negative (–) terminal cable is dis-
connected from the battery.

2. REMOVE 

STATER 

RELAY

LOCATION: In the engine compartment relay box.

3. INSPECT 

STARTER 

RELAY

A. Inspect relay continuity

(a)  Using an ohmmeter, check that there is continuity

between terminals 1 and 2.

(b)  Check that there is no continuity between terminals 3

and 5.

If continuity is not as specified, replace the relay.

B. Inspect relay operation

(a)  Apply battery voltage across terminals 1 and 2.
(b)  Using an ohmmeter, check that there is continuity

between terminals 3 and 5.

If operation is not as specified, replace the relay.

4. 

REINSTALL STARTER RELAY

5.  RECONNECT CABLE TO NEGATIVE TERMINAL OF

BATTERY

NEUTRAL START SWITCH

(See AT section)

THEFT DETERRENT SYSTEM

(See BE section)

–

STARTING SYSTEM

Starter Relay, Neutral Start Switch, Theft Deterrent
System

ST–35