Toyota Sequoia (2005). Manual — part 250
F16805
Suspension Control ECU
Wire Harness View:
S25
IG
–
DIAGNOSTICS
AIR SUSPENSION SYSTEM
DI–795
989
2
Inspect suspension control ECU.
PREPARATION:
Disconnect the ECU connector.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester connection
(Symbol)
Condition
Specified condition
S25–10 (IG) –
Body ground
Ignition switch OFF
→
ON
Below 1 V
→
10 to 14 V
RESULT:
NG
A
OK (When checking from step 1)
B
OK (When checking from step 2)
C
B
Replace suspension control ECU
(See page
).
C
Proceed to next circuit inspection shown in
problem symptoms table (See page
A
Repair or replace harness or connector.
DIDJT–01
F19148
Combination Meter
Tire Pressure
Warning Lamp
DI–796
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
990
TIRE PRESSURE WARNING SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System Name
See Page
Back Door Power Window Control System
1.
TIRE PRESSURE WARNING SYSTEM PRECAUTION
(a)
When the tire pressure warning lamp comes on, immedi-
ately check the tire pressure of the tire and adjust it to the
specified pressure. (The tire pressure warning lamp
comes on if there is an open in the tire pressure warning
lamp circuit.)
NOTICE:
Check the spare tire as well since this system monitors
pressure of all tires, including the spare.
Tire size
Front
Rear
Spare
P245 / 70 R 16
220 kPa (2.2 kgf/cm
2
, 32 psi)
240 kPa (2.4 kgf/cm
2
, 35 psi)
240 kPa (2.4 kgf/cm
2
, 35 psi)
P265 / 70 R 16
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
P265 / 65 R 17
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
220 kPa (2.2 kgf/cm
2
, 32 psi)
(b)
When the tire pressure warning lamp blinks, there is a
malfunction in the system. Check for DTCs.
(c)
It is necessary to register the transmitter ID in the tire pres-
sure monitor ECU when replacing the tire pressure moni-
tor valve sub–assy and/or tire pressure monitor ECU (see
page
(d)
When replacing the tire pressure monitor ECU.
(1)
Using the DATA LIST, read the transmitter IDs regis-
tered in the ECU and make a note of them before
removing the tire pressure monitor ECU.
(2)
Register the transmitter IDs after installing a new
tire pressure monitor ECU.
(e)
When replacing the tire pressure monitor valve sub–assy.
(1)
Make a note of the 7 digit number (transmitter ID)
written on the tire pressure monitor valve sub–assy
when replacing the tire pressure monitor valve sub–
assy. Register the transmitter IDs in the tire pres-
sure monitor ECU after replacing the tire pressure
monitor valve sub–assy and installing the tires and
wheels on the vehicle.
F19132
Transmitter ID
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–797
991
NOTICE:
The transmitter ID is written on the tire pressure monitor
valve sub–assy and ID can not be seen after installing the
tire pressure monitor valve sub–assy on the tire and wheel.
Therefore, make a note of the transmitter ID before instal-
ling the tire pressure monitor valve sub–assy.
2.
IN CASE OF TIRE AND WHEEL REPLACEMENT
(a)
When tires and wheels are replaced, register the transmitter ID without fail.
3.
IN CASE OF TIRE ROTATION OR REPLACEMENT OF TIRE PRESSURE MONITOR ECU, TIRE
PRESSURE MONITOR VALVE SUB–ASSY, OR TIRES WITH DIFFERENT TIRE PRESSURE
(a)
Initialize the tire pressure warning system after one of the following is performed:
Replacing the tire pressure monitor ECU or the tire pressure monitor valve sub–assy
Tire rotation
Replacing tires with different tire pressure
HINT:
The tire pressure warning system will not operate properly if it is not initialized
(see page
4.
FAIL–SAFE FUNCTION
(a)
When a system malfunction occurs in the tire pressure warning system, the tire pressure warning lamp
blinks and informs the driver of the system failure.
(b)
The result of this diagnosis is stored in the tire pressure monitor ECU.
DIDJU–01
F19149
Tire Pressure Sensor
(Tire Pressure Monitor
Valve Sub–assy)
Tire Pressure Sensor
(Tire Pressure Monitor
Valve Sub–assy)
Tire Pressure Sensor
(Tire Pressure Monitor
Valve Sub–assy)
Combination Meter Assy
Tire Pressure Warning Lamp
Tire Pressure
Monitor ECU
Tire Pressure Warning
Reset Switch
Tire Pressure Sensor
(Tire Pressure Monitor Valve Sub–assy)
Tire Pressure Sensor
(Tire Pressure Monitor
Valve Sub–assy)
Tire Pressure Monitor
Receiver Assy
DI–798
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
992
LOCATION
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