Toyota Sequoia (2005). Manual — part 273
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–887
1081
11
Rapidly reduce the pressure of rear left wheel to 120 kPa (1.2 kgf/cm
2
, 17 psi).
NEXT
12
Using hand–held tester, check the ID1 tire pressure data.
NEXT
13
Is ID1 tire pressure 120 kPa (1.2 kgf/cm
2
, 17 psi)?
Yes
The ID1 is for the rear left wheel transmitter.
No
The ID1 is for the spare tire transmitter.
F19795
A20
Airbag Sensor
Assembly
Sub J/B No.4
Tire Pressure
Monitor ECU
T5 Translate ECU
D6
DLC3
TC
E4
P–B
P–B
TC
P–B
13
TC
TC
P–B
G
T17
4D
5
1A
9
4A
5
4C
5
4E
5
ECM
23
4B
5
CG
4
J43
J/C
O
15
1F
O
15
A
IG
A
12
TC
Instrument Panel J/B
P–B
DI–888
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1082
Tc and CG Terminal Circuit
CIRCUIT DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are indicated by blinking of the tire pressure warning lamp.
WIRING DIAGRAM
HINT:
When each warning lamp stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal
ground short in each ECU is suspected.
DIDKK–01
D13491
TC
D6
DLC3:
F19136
T17
TC
Tire Pressure Monitor ECU:
D13491
CG
D6
DLC3:
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
DI–889
1083
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
1
Check harness and connector (DLC3 – Tire pressure monitor ECU).
PREPARATION:
Disconnect the tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connection
Condition
Specified condition
D6–13 (TC) –
T17–12 (TC)
Always
Below 1
Ω
NG
Repair or replace harness or connector.
OK
2
Check harness and connector (DLC3 – Body ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connection
Condition
Specified condition
D6–4 (CG) –
Body ground
Always
Below 1
Ω
NG
Repair or replace harness or connector.
OK
F19136
T17
TC
Tire Pressure Monitor ECU:
DI–890
–
DIAGNOSTICS
TIRE PRESSURE WARNING SYSTEM
1084
3
Check harness and connector (Tire pressure monitor ECU – Body ground).
PREPARATION:
Disconnect the tire pressure monitor ECU T17 connector.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Tester connection
Condition
Specified condition
T17–12 (TC) –
Body ground
Always
10 k
Ω
or higher
NG
Repair or replace harness or connector and
each ECU.
OK
Replace tire pressure monitor ECU
(See page
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