2003 LEXUS LS430 replacement

Fig. 106: Inspecting Cooling Box Lamp Sub-Assy
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OVERHAUL
HINT:
Installation is in the reverse order of removal.
See COMPONENTS .
1.EVACUATE REFRIGERANT HFC-134A (R134A) (See REPLACEMENT
)
2.REMOVE LUGGAGE COMPARTMENT FLOOR MAT (See REPLACEMENT
)
3.REMOVE DECK TRIM SIDE BOARD RH (See REPLACEMENT
)
4.REMOVE DECK TRIM SIDE BOARD LH (See REPLACEMENT
)
5.REMOVE LUGGAGE COMPARTMENT TRIM COVER FRONT (See REPLACEMENT
)
6.REMOVE REAR SEAT CUSHION ASSY (See OVERHAUL
)

7.REMOVE REAR SEAT BACK ASSY (See step 4 in OVERHAUL )
8.REMOVE PACKAGE TRAY TRIM PANEL ASSY (See step 4 in REPLACEMENT
)
9.REMOVE ROOF SIDE GARNISH INNER RH (See see step 3 in REPLACEMENT
)
10.REMOVE ROOF SIDE GARNISH INNER LH (See step 3 in REPLACEMENT
)
11.REMOVE PACKAGE TRAY TRIM PANEL ASSY (See step 4 in REPLACEMENT
)
12.REMOVE PIPE COOLER REFRIGERANT SUCTION A
a. Remove the bolt and pipe cooler refrigerant suction A.
b. Remove the O-ring.
Fig. 107: Removing Pipe Cooler Refrigerant Suction A

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13.REMOVE A PIPE COOLER REFRIGERANT LIQUID
a. Remove the bolt and A pipe cooler refrigerant liquid.

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39.CHARGE REFRIGERANT (See REPLACEMENT
)
40.WARM UP ENGINE
41.INSPECT FOR REFRIGERANT LEAKAGE (See REPLACEMENT
)

LOCATION
Fig. 1: Identifying Horn System Components And Replacements Location

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Fig. 6: Inspecting Low Pitched Horn Assy
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If the result is not as specified, replace the horn assy.
If all the check results are as specified above and the wire harness is normal, replace the horn button
switch (steering wheel pad) (see REPLACEMENT
).
REPLACEMENT
1.REMOVE LOW PITCHED HORN ASSY
a. Disconnect the connector.
b. Remove the bolt and horn.
2.REMOVE HIGH PITCHED HORN ASSY
a. Disconnect the connector.
b. Remove the bolt and 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. 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
).