LEXUS LS430 2003 Factory Repair Manual

TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the rear seat cushion heater assy RH.
Fig. 98: Identifying Rear Wing Outer Heater RH Connector Terminals

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c. Check the resistance between the terminals of the rear cushion heater RH.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITION
Tester ConnectionConditionSpecified Condition
1 - 220°C (68°F)7.2 to 8.8 ohms

If the result is not as specified, replace the rear seat cushion heater assy RH.
Tester ConnectionConditionSpecified Condition
A1 - B120°C (68°F)4.2 to 5.1 ohms
C2 - C420°C (68°F)4.2 to 5.1 ohms
A2 - B2AlwaysBelow 1 ohms
C1 - C325°C (77°F)2 kohms

Fig. 99: Identifying Rear Cushion Heater RH Connector Terminals

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p.INSPECT REAR SEATBACK HEATER ASSY RH
a. Measure the resistance between the terminals of the rear seatback heater RH.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the rear seatback heater assy RH.
Fig. 100: Identifying Rear Seatback Heater RH Connector Terminals

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Tester ConnectionConditionSpecified Condition
A2 - A420°C (68°F)5.4 to 6.6 ohms
S61-4 - A220°C (68°F)5.4 to 6.6 ohms
S61-2 - A420°C (68°F)5.4 to 6.6 ohms
S61-1 - A1AlwaysBelow 1 ohms
S61-3 - A3AlwaysBelow 1 ohms

REMOVAL AND INSTALLATION OF BATTERY TERMINAL
a. Before performing electronic work, disconnect the battery negative (-) terminal cable in order to prevent
it from shorting and burning out.
b. When disconnecting and reconnecting the battery cable, turn the ignition switch and lighting switch off
and loosen the terminal nut completely. Perform operations without twisting or prying on the terminal.
c. When the battery terminal cable is removed, the memories of the clock, radio, DTCs, etc. are erased. So
before removing it, check and make a note of them.
INITIALIZE SYSTEM REFERENCE
System NameSee Procedure
Front Power Seat Control SystemINITIALIZATION

Fig. 1: Disconnecting Battery Negative (-) Terminal
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Fig. 2: Identifying Components Locations (1 Of 3)
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Fig. 3: Identifying Components Locations (2 Of 3)
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Fig. 4: Identifying Components Locations (3 Of 3)
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Fig. 5: Combination Meter System Diagram
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GATEWAY: