Lexus SC300 / Lexus SC400. Manual - part 731

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

(See page 

ST–2

)

1. 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.

2. 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.

NEUTRAL START SWITCH

(See AT section)

THEFT DETERRENT SYSTEM

(See BE Section)

ST–14

–

STARTING SYSTEM

Starter Relay

SERVICE SPECIFICATIONS

SERVICE DATA

Starter

Rated voltage and output power

12 V 1.4 kW

No–load characteristic

Current

90 A or less at 11.5 V

rpm

3,500 rpm or more

Brush length

STD

15.5 mm

0.610 in.

Limit

10.0 mm

0.394 in.

Commutator

Outer diameter

STD

30 mm

1.18 in.

Limit

29 mm

1.14 in.

Undercut depth

STD

0.6 mm

0.024 in.

Limit

0.2 mm

0.008 in.

Circle runout

Limit

0.05 mm

0.0020 in.

Spring installed load

STD

18–24 N

(1.79 – 2.41 kgf, 3.9 – 5.3 lbf)

Limit

12 N

1.2 kgf

2.6 lbf

TORQUE SPECIFICATIONS

Part tightened

N

⋅

m

kgf

⋅

cm

ft

⋅

lbf

Starter x Cylinder block

39

400

29

–

STARTING SYSTEM

Service Specifications

ST–15