Toyota Sequoia (2005). Manual — part 265
F19172
Tire Pressure
Monitor ECU
IG
GND
T17
11
Sub J/B No. 3
B–R
1F
I18
Ignition SW
2
AM1
4
Battery
T17
2
8
3A
A
A
J37
J/C
B–R
IG1
1
Instrument Panel J/B
ECU–IG
1
2
T17
T17
T17
GND2
RDA
RF5V
GND
RDA
+5V
1
4
5
T19 Tire Pressure
Monitor Receiver
BR–R
V
L
BD2
BD2
BD2
5
B–R
W–L
8
7
16
J30
H
J30
I
J30
J
J29
A
J29
B
J29
C
BR–R
V
L
BR–R
V
L
8
3C
1C
4
B–Y
1L
1
Instrument Panel J/B
AM1
1C
6
W
ALT
F10
Fusible Link Block
Instrument Panel J/B
1F
10
1H
1
W–B
W–B
A
J8
J/C
IE
4
3
J/C
5
8
B
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–855
1049
WIRING DIAGRAM
F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GND
DI–856
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1050
INSPECTION PROCEDURE
NOTICE:
It is necessary to register an ID code after replacing the tire pressure monitor valve sub–assy and/or
the tire pressure monitor ECU (see page
HINT:
Set the tire pressure to the specified value.
1
Inspect tire pressure monitor receiver assy.
PREPARATION:
(a)
Disconnect the tire pressure monitor receiver assy T19
connector.
(b)
Turn the ignition switch to the ON position.
CHECK:
Measure the voltage according to the value(s) in the table be-
low.
OK:
Tester Connection
Condition
Specified Condition
T19–4 (GND) –
T19–5 (+5V)
Ignition Switch ON
4.5 to 5.5 V
NG
Go to step 3.
OK
F19136
Tire Pressure Monitor ECU:
T17
RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
RDA
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–857
1051
2
Check harness and connector (Tire pressure monitor receiver assy – Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor receiver assy T19 connec-
tor and tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
T17–7 (RDA) – T19–1 (RDA)
Below 1
Ω
OK
Go to step 5.
NG
F19136
Tire Pressure Monitor ECU:
T17
RF5V
GND2
RDA
F19137
Tire Pressure Monitor Receiver Assy:
T19
+5V
GND
RDA
DI–858
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1052
3
Check harness and connector (Tire pressure monitor receiver assy – Tire pres-
sure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor receiver assy T19 connec-
tor and tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester Connection
Specified Condition
T17–7 (RDA) – T19–1 (RDA)
Below 1
Ω
T17–8 (RF5V) – T19–5 (+5V)
Below 1
Ω
T17–16 (GND2) – T19–4 (GND)
Below 1
Ω
T17–7 (RDA) – Body ground
10 k
Ω
or higher
T17–8 (RF5V) – Body ground
10 k
Ω
or higher
T17–16 (GND2) – Body ground
10 k
Ω
or higher
NG
Repair or replace harness or connector.
OK
4
Check power source circuit (See page
NG
Repair or replace power source circuit.
OK
5
Replace tire pressure monitor receiver assy (See page
HINT:
Perform the inspection using parts from a normal vehicle when possible.
NEXT
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