2003 LEXUS LS430 Identifying ac

Fig. 11: Identifying Terminals Of DLC3
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2.CHECK DLC3
The vehicle's ECU uses the ISO 15765-4 communication protocol. The terminal arrangement of the
DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
HINT:
Connect the cable of the hand-held tester (with CAN VIM) to the DLC3, turn the ignition switch ON and
attempt to use the hand-held tester. If the screen displays UNABLE TO CONNECT TO VEHICLE, a
problem exists in the vehicle side or the tester side.
If the communication is normal when the tester is connected to another vehicle, inspect the DLC3 on the
original vehicle.
If the communication is still impossible when the tester is connected to another vehicle, the problem is
probably in the tester itself. Consult the Service Department listed in the tester's instruction manual.
TERMINAL DESCRIPTION AND SPECIFIED CONDITION

Fig. 13: Identifying Terminals Of LA, LF, LL J/B And L14 ECU Connectors
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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig. 15: >Identifying Terminals Of Fuel Lid Opener Switch
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OK: GO TO NEXT STEP

Fig. 16: Identifying Terminals Of Driver Side J/B ECU - Fuel Lid Opener Switch
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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig. 19: Identifying Terminals Of Luggage Room J/B - Fuel Lid Opener Motor Assy And Body
Ground
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NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig. 20: Identifying Terminals Of Luggage Door Opening Switch Assy (Fuel Lid Opener Switch)
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2.INSPECT FUEL LID OPENER MOTOR ASSY
a. Check operation of the motor.

LOCATION
Fig. 1: Identifying Fuel System Component Location

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SYSTEM DIAGRAM

Fig. 30: Disconnecting Wire Clamps From Wire Clamp Bracket On RH Delivery Pipe
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a. Disconnect the 2 wire clamps from the wire clamp bracket on the RH delivery pipe.
12.REMOVE FUEL PRESSURE PULSATION DAMPER ASSY
a. Disconnect the fuel delivery pipe and fuel pipe by removing both right and left pulsation dampers.
b. Remove the gasket.
Fig. 31: Identifying Fuel Delivery Pipe

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13.REMOVE FUEL DELIVERY PIPE SUB-ASSY
a. Remove the installation bolts of the water by-pass pipe No. 1 and No. 2.
b. Disconnect the connector.
c. Remove the 2 bolts.
d. Remove the fuel delivery pipe No. 1 by pulling it straight upward holding both the ends.
14.REMOVE FUEL DELIVERY PIPE SUB-ASSY NO.2
a. Disconnect the connector.