Toyota Sequoia (2005). Manual - part 247

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DIAGNOSTICS

AIR SUSPENSION SYSTEM

DI–783

977

DTC

U0122/67 Lost Communication with Translate ECU

CIRCUIT DESCRIPTION

The translate ECU sends signals such as vehicle wheel speed signal, TS terminal signal (test mode signal)
to the suspension control ECU, etc. when the air suspension system is in operation.

DTC No.

DTC Detecting Condition

Trouble Area

U0122/67

The suspension control ECU detects the following conditions

simultaneously:

1. Ignition switch ON

2. No communication from translate ECU continues for more

than 3 seconds

Translate ECU

Suspension control ECU

Communication circuit

INSPECTION PROCEDURE

HINT:
This circuit uses CAN for communication. Therefore, if there are any malfunctions in the communication cir-
cuit, one or more DTCs in the CAN communication system is/are output.

1

Go to CAN communication system (See page 

DI–1065

).

DIDEH–01

DI–784

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DIAGNOSTICS

AIR SUSPENSION SYSTEM

978

DTC

U0132/71 Lost Communication with Ride Level Con-

trol Module

CIRCUIT DESCRIPTION

DTC No.

DTC Detecting Condition

Trouble Area

U0132/71

The suspension control ECU detects the following conditions

simultaneously:

1. Ignition switch ON

2. No communication from CAN bus continues for more than

10 times

Suspension control ECU

Communication circuit

INSPECTION PROCEDURE

HINT:
This circuit uses CAN for communication. Therefore, if there are any malfunctions in the communication cir-
cuit, one or more DTCs in the CAN communication system is/are output.

1

Go to CAN communication system (See page 

DI–1065

).

DIDEJ–01

F19450

C6
Combination
Meter

Suspension Control
ECU

I18
Ignition SW

Instrument Panel J/B

Engine Room J/B

24

14

15

16

LO

N

HI

P

B–L

GR–R

26

S25

9

S25

8

S25

LO

NR

HI

6

IG2

AM2

5

W–R

B–R

IGN1

11

7

1H

1J

1C

1C

3

2

W–R

AM2

1

2C

2D

1

B

Battery

B–O

B

5

4

F10
FL Block

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DIAGNOSTICS

AIR SUSPENSION SYSTEM

DI–785

979

Height Control Indicator Lamp Circuit

CIRCUIT DESCRIPTION

The height control indicator lamp indicates the target height, not the actual height.
It blinks when the height control is operated by pressing the height control switch and stays on when the
operation is completed.

WIRING DIAGRAM

DIDEL–01

DI–786

–

DIAGNOSTICS

AIR SUSPENSION SYSTEM

980

INSPECTION PROCEDURE

1

Inspect height control indicator lamp.

PREPARATION:
Turn the ignition switch to the ON position.
CHECK:
Check that the height control indicator lamp comes on.
OK:

Height control indicator lamp comes on, and then goes off after 2 seconds.

NG

Go to combination meter system
(See page 

DI–1610

).

OK