Toyota Sequoia (2005). Manual — part 437
A08841
Hand–held Tester
DLC3
DIDEZ–01
A04550
DLC3
1 2 3 4 5 6 7 8
9
10 11 12 1314 1516
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
DI–1543
1737
DIAGNOSIS SYSTEM
1.
DESCRIPTION
The ECM controls the cruise control system of the vehicle. The
data and DTCs relating to the cruise control system can be read
from the DLC3 of the vehicle. If no DTCs are output when
checking for DTCs, there may be a problem with the combina-
tion meter or the multiplex communication system.
Use the hand–held tester or SST to check and solve the prob-
lem.
SST
09843–18040
2.
CHECK THE DLC3
The vehicle’s ECM uses ISO 9141–2 for communication. The
terminal arrangement of the DLC3 complies with SAE J1962
and matches the ISO 9141–2 format.
Symbols (Terminals No.)
Terminal Description
Condition
Specified Condition
SIL(7) – SG(5)
Bus ”+” line
During transmission
Pulse generation
CG(4) – Body ground
Chassis ground
Always
Below 1
Ω
SG(5) – Body ground
Signal ground
Always
Below 1
Ω
BAT(16) – Body ground
Battery positive
Always
11 to 14 V
HINT:
If the display shows ”UNABLE TO CONNECT TO VEHICLE” af-
ter connecting the hand–held tester to the DLC3, turning the
ignition switch to the ON position and operating the tester, there
is a problem on either the vehicle side or the tool side.
If communication is normal when the tool is connected to
another vehicle, inspect the DLC3 on the original vehicle.
If communication is still impossible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool’s instruction manual.
I11929
CRUISE Main
Indicator Light
BE4034
Indicator Light
1.5 secs.
0.5 secs.
ON
OFF
DI–1544
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
1738
3.
CHECK THE INDICATOR
(a)
Turn the ignition switch to the ON position.
(b)
Check that the CRUISE main indicator light comes on
when the cruise control main switch ON–OFF button is
pushed on, and that the indicator light goes off when the
ON–OFF button is pushed off.
HINT:
If there is a problem with the indicator, inspect the cruise main
indicator light circuit (see page
HINT:
If a malfunction occurs in the vehicle speed sensors, stop lamp
switch assy, or other related parts during cruise control driving,
the ECM will actuate AUTO CANCEL of the cruise control. The
CRUISE main indicator light will then start to blink, informing the
driver of the malfunction. At the same time, data concerning the
malfunction is stored as a diagnostic trouble code (DTC).
DIDF0–01
A04550
TC
CG
1 2 3 4 5 6 7 8
9
10 11 12 1314 1516
I11929
CRUISE Main
Indicator Light
I28693
Normal System Code:
ON
OFF
Code 52
Code 21
0.25 sec.
0.25 sec.
ON
OFF
Diagnostic Trouble Code:
4.5 sec.
2.5 sec.
1.5 sec.
0.5 sec.
0.5 sec.
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
DI–1545
1739
DTC CHECK / CLEAR
1.
DTC CHECK (USING SST CHECK WIRE)
(a)
Using SST check wire, connect terminals TC and CG
of
the DLC3.
SST
09843–18040
(b)
Turn the ignition switch to the ON position.
(c)
Read and record DTCs from the CRUISE main indicator
light on the combination meter. As examples, refer to the
chart below for the blinking patterns of the normal system
code, and diagnostic trouble codes 21 and 52.
(d)
Refer to the Diagnostic Trouble Code Chart (see page
2.
DTC CLEAR (USING SST CHECK WIRE)
Remove the EFI No.1 and ETCS fuses from the engine room
J/B for more than 60 seconds, or disconnect the battery termi-
nal for more than 60 seconds.
A08841
DLC3
Hand–held Tester
DI–1546
–
DIAGNOSTICS
CRUISE CONTROL SYSTEM
1740
3.
DTC CHECK (USING HAND–HELD TESTER)
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch to the ON position.
(c)
Read the DTCs on the tester screen.
4.
DTC CLEAR (USING HAND–HELD TESTER)
(a)
Connect the hand–held tester to the DLC3.
(b)
Turn the ignition switch to the ON position.
(c)
Clear the DTCs following the prompts on the tester
screen.
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