Lexus ES300 (2002 year). Manual - part 347

C52361

Tc

CG

DLC3:

-

DIAGNOSTICS

ELECTRONIC MODULATED SUSPENSION SYSTEM

05-231

384

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

INSPECTION PROCEDURE

1

INSPECT DLC3 TERMINAL VOLTAGE(Tc TERMINAL)

(a)

Turn the ignition switch to ON.

(b)

Measure voltage between terminals Tc and CG of DLC3.
OK:
Voltage: 10 - 14 V

OK

Go to step 3

NG

2

CHECK HARNESS AND CONNECTOR(DLC3 - BODY GROUND)

(a)

Check for open and short circuit in harness and connector between terminal CG of DLC3 and body
ground (See page 

01-31

).

NG

REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

3

CHECK HARNESS AND CONNECTOR(DLC3 - ABSORBER CONTROL ECU)

(a)

Check for open and short circuit in harness and connector between terminal Tc of DLC3 and absorber
control ECU (See page 

01-31

).

NG

REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

CHECK AND REPLACE ABSORBER CONTROL ECU(See page 

01-31

)

F41656

Absorber Control ECU

Passenger Side J/B

D2 DLC3

Driver Side J/B

Ts

LG-B

19

A22

3

IF2

2R

2L

8

W-B

IA

SB

50

70

60

80

4

CG

3B

3B

3B

3B

(*2)

(*1)

(*2)

(*1)

W-B

8

J3 
J/C

A

LG-B

LG-B

A

(*1)

14

Ts

W-B

*1: w/ VSC 
*2: w/o VSC

05-232

-

DIAGNOSTICS

ELECTRONIC MODULATED SUSPENSION SYSTEM

385

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

TS TERMINAL CIRCUIT

CIRCUIT DESCRIPTION

After making short circuit between terminal Ts and CG of DLC3 with the ignition switch turned OFF, the mode
will change from normal mode to test mode when the ignition switch is turned ON. After the ignition switch
is turned ON, there will be DTC output from TEM terminal of DLC3.

WIRING DIAGRAM

056AJ-01

C52361

Ts

CG

DLC3:

-

DIAGNOSTICS

ELECTRONIC MODULATED SUSPENSION SYSTEM

05-233

386

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

INSPECTION PROCEDURE

1

INSPECT DLC3 TERMINAL VOLTAGE(Ts TERMINAL)

(a)

Turn the ignition switch to ON.

(b)

Measure voltage between terminals Ts and CG of DLC3.
OK:
Voltage: 10 - 14 V

OK

Go to step 3

NG

2

CHECK HARNESS AND CONNECTOR(DLC3 - BODY GROUND)

(a)

Check for open and short circuit in harness and connector between terminal CG of DLC3 and body
ground (See page 

01-31

).

NG

REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

3

CHECK HARNESS AND CONNECTOR(DLC3 - ABSORBER CONTROL ECU)

(a)

Check for open and short circuit in harness and connector between terminal Ts of DLC3 and absorber
control ECU (See page 

01-31

).

NG

REPAIR OR REPLACE HARNESS OR
CONNECTOR

OK

CHECK AND REPLACE ABSORBER CONTROL ECU(See page 

01-31

)

F41657

Absorber Control ECU

Passenger Side J/B

D2 DLC3

Driver Side J/B

TEM

P

15

A22

3

IF2

2R

2L

8

W-B

IA

SB

50

70

60

80

4

CG

3B

3B

3B

3B

(*2)

(*1)

(*2)

(*1)

W-B

8

TEM

W-B

*1: w/ VSC 
*2: w/o VSC

1

P

05-234

-

DIAGNOSTICS

ELECTRONIC MODULATED SUSPENSION SYSTEM

387

2002 LEXUS ES300 REPAIR MANUAL   (RM911U)

TEM TERMINAL CIRCUIT

CIRCUIT DESCRIPTION

After making short circuit between terminal Ts and CG of DLC3 with the ignition switch turned OFF, the mode
will change from normal mode to test mode when the ignition switch is turned ON. After the ignition switch
is turned ON, there will be DTC output from TEM terminal of DLC3.

WIRING DIAGRAM

056AK-01