2003 LEXUS LS430 Diagram AC

Fig. 4: Fuel System - System Diagram (3 Of 3)
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PRECAUTION
1.BEFORE WORKING ON FUEL SYSTEM, DISCONNECT NEGATIVE (-) TERMINAL CABLE
FROM BATTERY
2.DO NOT SMOKE OR WORK NEAR AN OPEN FLAME WHEN WORKING ON FUEL

SYSTEM DIAGRAM
Fig. 1: Garage Door Opener System Diagram

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DESCRIPTION
A maximum of 3 kinds of transmitter code based systems (example: garage doors, gates and entry gates) can be

SYSTEM DIAGRAM
Fig. 2: Identifying Horn System Diagram

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PROBLEM SYMPTOMS TABLE
Fig. 3: Problem Symptoms Table

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INSPECTION
1.INSPECT FUSE (HORN)

LOCATION
Fig. 1: Identifying Ignition System Components And Replacement Location

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SYSTEM DIAGRAM
The ECM determines ignition timing based on signals from various sensors.

Fig. 2: Ignition System Diagram (1 Of 2)
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Fig. 3: Ignition System Diagram (2 Of 2)
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ON-VEHICLE INSPECTION
1.INSPECT IGNITION COIL ASSY (WITH IGNITER) AND PERFORM SPARK TEST
a. Check for DTCs.
b. Check if sparks occur.
1. Remove the ignition coil (see REPLACEMENT
).
2. Remove the spark plug.
3. Install the spark plug to the ignition coil, and connect the ignition coil connector.
4. Disconnect the 8 injector connectors.
5. Ground the spark plu
g.

6. Visually check if spark occurs while the engine is being cranked.
If a spark does not occur, perform the test as follows:
Fig. 4: Spark Test Flow Diagram

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7. Using a 16 mm (0.63 in.) plug wrench, install the spark plugs.
Torque: 18 N.m (180 kgf.cm, 13 ft.lbf)
8. Install the ignition coils (see REPLACEMENT
).

LOCATION
Fig. 1: Identifying Intake Air Control System Components And Replacements Location

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SYSTEM DIAGRAM