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
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
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
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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
OK
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