2003 LEXUS LS430 display

Fig. 31: Identifying DLC3 Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DLC3 CONNECTOR TERMINALS REFERENCE
HINT:
If the display shows UNABLE TO CONNECT TO VEHICLE when you have connected the cable of the
hand-held tester to the DLC3, turned the ignition switch ON and operated the tester, there is a problem on
the vehicle side or tool side.
Symbols (Terminals No.)Terminals DescriptionConditionSpecified condition
CG(4) - Body groundChassis groundAlwaysBelow 1 ohms
BAT(16) - Body groundBattery positiveAlways11 to 14 V
CANH(6) - CANL(14)HIGH-level CAN bus lineIG switch OFF54 ohms to 67ohms
CANH(6) - Body groundHIGH-level CAN bus lineIG switch OFF1 Mohms or higher
CANH(6) - CG(4)HIGH-level CAN bus lineIG switch OFF3 Kohms or higher
CANL(14) - Body groundLOW-level CAN bus lineIG switch OFF1 Mohms or higher
CANL(14) - CG(4)LOW-level CAN bus lineIG switch OFF3 Kohms or higher

If the communication is normal when the tool is connected to another vehicle, inspect the DLC3 on
the original vehicle.
If the communication is still impossible when the tool is connected to another vehicle, the problem
is probably in the tool itself, so consult the Service Department listed in the tool's instruction
manual.
2.DIAGNOSIS CHECK (MULTI- INFORMATION DISPLAY)
a. Switch to diagnosis mode
1. Connect terminal 13 (TC) and 4 (CG) of the DLC3 using SST.
Fig. 32: Identifying Terminal 13 (TC) And 4 (CG) Of DLC3

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. The display in the warning area shows "DIAG" when the ignition switch is turned to the ON
position.
3. Each system can be switched by pushing the "DISP1" switch on the steering pad switch.
HINT:
Dia
gnosis checks for the EFI, VSC and CRUISE systems can be done by using the displayed items

Fig. 33: Display Items In Warning Area
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Read DTCs
1. "OK" is displayed if the system is normal while "NG" is displayed if it is malfunctioning.
HINT:
When the ignition switch is turned to any position but ON during diagnosis mode, the mode is
canceled.

Fig. 34: Display OK And NG
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
c. "- -" is displayed if there is an open or short circuit in communication lines between the meter and
each ECU bein
g checked. "E" is displayed if there is a problem with diagnosis communication

signal data.
Fig. 35: Display E And
- -
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WATER TEMPERATURE GAUGE:
WATER TEMPERATURE GAUGE FAIL-SAFE REFERENCE
FUEL SIGNAL (FUEL INJECTION SIGNAL):
FUEL SIGNAL (FUEL INJECTION SIGNAL) FAIL-SAFE REFERENCE
FUEL SIGNAL (GAUGE SIGNAL):
ConditionResponseRecovery
Water temperature data is interrupted for
5 seconds.The gauge needle indicates
below "C".Water temperature data is
received.
ConditionResponseRecovery
While the ignition switch is in the ON
position, the fuel injection signal is
interrupted for 60 seconds.Fuel gauge calibration is
performed using average fuel
consumption data.The ignition switch is turned
from off to on and normal
data is received.

FUEL SIGNAL (GAUGE SIGNAL) FAIL-SAFE REFERENCE
SHIFT INDICATOR:
SHIFT INDICATOR FAIL-SAFE REFERENCE
GEAR POSITION INDICATOR (1 TO 6):
GEAR POSITION INDICATOR (1 TO 6) FAIL-SAFE REFERENCE
ABS & BRAKE:
ABS & BRAKE FAIL-SAFE REFERENCE
DOOR:
DOOR FAIL-SAFE REFERENCE
TAIL:
TAIL FAIL-SAFE REFERENCE
BEAM:
BEAM FAIL-SAFE REFERENCE
ConditionResponseRecovery
While the ignition switch is in the ON position, the
sender signal is interrupted for 60 seconds and a
malfunction signal is received from one of the gauges
for 10 to 20 seconds.The needle indicates
E, and the warning
light comes on.The ignition switch is
turned from off to on and
normal data is received.
ConditionResponseRecovery
"P to D" data is interrupted for 3 seconds.All indicators go off.Normal data is received.
"S" data is interrupted for 3 seconds.The "S" indicator goes off.Normal data is received.
ConditionResponseRecovery
Gear position data is interrupted for 3 seconds or a malfunction
signal is received.The indicator goes
off.Normal data is
received.
ConditionResponseRecovery
ABS & Brake data is interrupted for 10 seconds.The warning light comes on.Normal data is received.
ConditionResponseRecovery
Regular data is interrupted.The data received most recently remains displayed.Normal data is received.
ConditionResponseRecovery
Regular data is interrupted.The data received most recently remains displayed.Normal data is received.
ConditionResponseRecovery
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AIRBAG:
AIRBAG FAIL-SAFE REFERENCE
COMPASS:
COMPASS FAIL-SAFE REFERENCE
OUTSIDE TEMP.:
OUTSIDE TEMP FAIL-SAFE REFERENCE
MULTI-INFORMATION:
MULTI-INFORMATION FAIL-SAFE REFERENCE
RHEOSTAT:
RHEOSTAT FAIL-SAFE REFERENCE
DATA LIST
According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
method to shorten work time.
a. Warm up the en
gine.
ConditionResponseRecovery
Airbag data is interrupted for 10 seconds or there is a
malfunction in the meter's internal CPU.The warning light
comes on.Normal data is
received.
ConditionResponseRecovery
Unspecified data is received.Only the compass frame is displayed.Direction data is received.
ConditionResponseRecovery
Abnormal data and sensor malfunctioning data are
received."- -.°C (- -°F)" is
displayed.Normal data is
received.
Outside temp, data is interrupted for 10 seconds.The display becomes
blank.Normal data is
received.
ConditionResponseRecovery
Cruise information data is interrupted
for 60 seconds.The display becomes blank (only measurement
units are displayed).Normal data is
received.
ConditionResponseRecovery
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abnormal data is received.The display remains in
daytime mode.Normal data is
received.