Toyota Sequoia (2005). Manual — part 443
I28464
ECM
Sub J/B No.4
23
E4
13
28
T5
15
A20
5
4E
TC
TC
5
4B
5
4C
5
4D
5
4A
15
1F
9
1A
J43
J/C
12
T17
P–B
P–B
Translate ECU
TC
P–B
P–B
O
O
4
TC
CG
D6
DLC3
Airbag Sensor
Assembly
Instrument Panel J/B
Tire Pressure
ECU
P–B
G
A
A
IG
TC
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
DI–1567
1761
Diagnosis circuit
CIRCUIT DESCRIPTION
Making a short circuit between terminals TC and CG of the DLC3 will output DTCs from the DLC3.
WIRING DIAGRAM
HINT:
When a particular warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an
internal ground short in the relevant ECU is suspected.
DIDF5–01
I28460
E4
TC
ECM Wire Harness View:
C00083
TC
D6
DLC3:
DI–1568
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
1762
INSPECTION PROCEDURE
1
Check harness and connector (TC of DLC3 – ECM).
PREPARATION:
Disconnect the E4 connector from the ECM.
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol
(Tester connection)
Condition
Specified condition
TC (E4–23) – TC (D6–13)
Always
Below 1
Ω
NG
Repair or replace harness or connector.
OK
C00083
CG
D6
DLC3:
C00083
TC
DLC3:
D6
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
DI–1569
1763
2
Check harness and connector (CG of DLC3 – Body ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol
(Tester connection)
Condition
Specified condition
CG (D6–4) – Body ground
Always
Below 1
Ω
NG
Repair or replace harness or connector.
OK
3
Check harness and connector (TC of DLC3 – Body ground).
CHECK:
Measure the resistance according to the value(s) in the table
below.
OK:
Symbol
(Tester connection)
Condition
Specified condition
TC (D6–13) – Body
ground
Always
10 k
Ω
or higher
NG
Repair or replace harness, connector or each
ECU.
OK
Replace ECM (See page
DID65–01
DI–1570
–
DIAGNOSTICS
ENGINE IMMOBILISER SYSTEM
1764
ENGINE IMMOBILISER 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
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