LEXUS LS430 2003 Factory Repair Manual
Manufacturer: LEXUS, Model Year: 2003,
Model line: LS430,
Model: LEXUS LS430 2003
Pages: 4500, PDF Size: 87.45 MB
LEXUS LS430 2003 Factory Repair Manual
LS430 2003
LEXUS
LEXUS
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LEXUS LS430 2003 Factory Repair Manual
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signaling that the seat position has been recorded.
3. Change the position of the seat and then press the M2 switch. Check that the buzzer sounds
for 0.1 seconds and the seat automatically moves to the position in step (c)-(1).
d. Check the M3 switch.
1. Using the seat switches, fully slide the seat rearward, fully recline the seatback rearward and
fully lower the seat cushion and headrest.
2. Press and hold down switches M3 and SET. Check that the buzzer sounds for 0.5 seconds,
signaling that the seat position has been recorded.
3. Change the position of the seat and then press the M3 switch. Check that the buzzer sounds
for 0.1 seconds and the seat automatically moves to the position in step (d)-(1).
e. Check that the switches M1, M2 and M3 cause the seat to move to the recorded seat positions
under these conditions: turn the ignition switch to the LOCK position, remove the key from the key
cylinder, open the driver side door and press M1, M2 or M3 within 30 seconds.
f. Check that the following procedures will erase the recorded seat positions of switches M1, M2 and
M3: press and hold the power seat slide switch, disconnect the battery's negative terminal cable,
and wait for at least 1 minute.
g. Restore the seat's memory.
1. Using the seat switches, fully slide the seat forward, fully recline the seatback forward, and
fully raise the seat cushion and headrest.
2. Using the seat switches, fully slide the seat rearward, fully recline the seatback rearward and
fully lower the seat cushion and headrest.
HINT:
This will restore the seat's memory of the seat's maximum positions. However, it will not restore
any recorded seat positions to switches M1, M2 or M3.
h. Attempt to record a seat position by pressing and holding the SET switch and two other switches
<000b0044005000520051004a000300300014000f0003003000150003004400510047000300300016000c0011000300310052000300560048004400570003005300520056004c0057004c0052005100030056004b00520058004f0047000300450048000300
550048004600520055004700480047001100030026004b0048[ck this by pressing M1, M2 or
M3 and making sure that the seat does not move.
HINT:
This step will only be true if step (f) was performed properly, whereby all previously recorded set
positions were erased.
1.Passenger's seat:
INSPECT POWER SEAT SWITCH
a. Measure the resistance between the terminals when each switch is operated.
Standard:
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Slide switch
TESTER CONNECTION AND SPECIFIED CONDITION
Front vertical switch
TESTER CONNECTION AND SPECIFIED CONDITION
Lifter switch
TESTER CONNECTION AND SPECIFIED CONDITION
Reclining switch
TESTER CONNECTION AND SPECIFIED CONDITION
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 12 (SLDF)FRONTBelow 1 ohms
6 (E) - 10 (SLDR)FRONTBelow 1 ohms
6 (E) - 12 (SLDF)OFFBelow 1 ohms
6 (E) - 10 (SLDR)OFFBelow 1 ohms
6 (E) - 12 (SLDF)REARBelow 1 ohms
1 (B) - 10 (SLDR)REARBelow 1 ohms
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 7 (FUP)UPBelow 1 ohms
6 (E) - 14 (FDWN)UPBelow 1 ohms
6 (E) - 7 (FUP)OFFBelow 1 ohms
6 (E) - 14 (FDWN)OFFBelow 1 ohms
6 (E) - 7 (FUP)DOWNBelow 1 ohms
1 (B) - 14 (FDWN)DOWNBelow 1 ohms
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 4 (LUP)UPBelow 1 ohms
3 (LDWN) - 6 (E)UPBelow 1 ohms
4 (LUP) - 6 (E)OFFBelow 1 ohms
3 (LDWN) - 6 (E)OFFBelow 1 ohms
4 (LUP) - 6 (E)DOWNBelow 1 ohms
1 (B) - 3 (LDWN)DOWNBelow 1 ohms
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 13 (RCLF)FRONTBelow 1 ohms
6 (E) - 11 (RCLR)FRONTBelow 1 ohms
6 (E) - 13 (RCLF)OFFBelow 1 ohms
6 (E) - 11 (RCLR)OFFBelow 1 ohms
6 (E) - 13 (RCLF)REARBelow 1 ohms
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1 (B) - 11 (RCLR)REARBelow 1 ohms
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Fig. 39: Inspecting Power Seat Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Headrest switch
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the switch.
2.INSPECT DRIVING POSITION MEMORY SWITCH
a. Measure the resistance between the terminals when the switch is operated.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the switch.
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 8 (HUP)UPBelow 1 ohms
6 (E) - 9 (HDWN)UPBelow 1 ohms
6 (E) - 8 (HUP)OFFBelow 1 ohms
6 (E) - 9 (HDWN)OFFBelow 1 ohms
6 (E) - 8 (HUP)DOWNBelow 1 ohms
1 (B) - 9 (HDWN)DOWNBelow 1 ohms
Tester ConnectionSwitch ConditionSpecified Condition
2 (MMR) -6 (E)SET switch ONBelow 1 ohms
3 (1) -6 (E)1 switch ONBelow 1 ohms
4 (2) - 6 (E)2 switch ONBelow 1 ohms
5 (3) - 6 (E)3 switch ONBelow 1 ohms
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Fig. 40: Identifying Driving Position Memory Switch Connector Terminals
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Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3.Driver's seat:
INSPECT LUMBAR SUPPORT SWITCH
a. Measure the resistance between the terminals when the switch is operated.
Standard:
Upper side control
TESTER CONNECTION AND SPECIFIED CONDITION
Tester ConnectionSwitch ConditionSpecified Condition
1 (H) - 5 (B)HOLDBelow 1ohms
4 (R) - 6 (E)HOLDBelow 1ohms
1 (H) - 6 (E)OFFBelow 1ohms
4 (R) - 6 (E)OFFBelow 1ohms
1 (H) - 6 (E)RELEASEBelow 1ohms
4 (R) - 5 (B)RELEASEBelow 1ohms
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Fig. 41: Identifying Lumbar Support Switch Connector Terminals -Driver Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Lower side control
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the switch.
4.Passenger's seat:
INSPECT LUMBAR SUPPORT SWITCH
a. Measure the resistance between the terminals when the switch is operated.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the switch.
Tester ConnectionSwitch ConditionSpecified Condition
2 (H1) - 5 (B)HoldBelow 1ohms
3 (R1) - 6 (E)HoldBelow 1ohms
2 (H1) - 6 (E)OFFBelow 1ohms
3 (R1) - 6 (E)OFFBelow 1ohms
2 (H1) - 6 (E)RELEASEBelow 1ohms
3 (R1) - 5 (B)RELEASEBelow 1ohms
Tester ConnectionSwitch ConditionSpecified Condition
1 (B) - 4 (H)HOLDBelow 1 ohms
2 (E) - 3 (R)HOLDBelow 1 ohms
1 (B) - 3 (R)OFFBelow 1 ohms
2 (E) - 3 (R)OFFBelow 1 ohms
1 (B) - 3 (R)RELEASEBelow 1 ohms
2 (E) - 4 (H)RELEASEBelow 1 ohms
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Fig. 42: Identifying Lumbar Support Switch Connector Terminals - Passenger Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
5.Driver's seat:
INSPECT POWER SEAT CUSHION SWITCH
a. Measure the resistance between the terminals when the switch is operated.
b. Remove the power seat cushion switch.
c. Measure the resistance of the switch.
Standard:
TESTER CONNECTION AND SPECIFIED CONDITION
If the result is not as specified, replace the switch.
Tester ConnectionSwitch ConditionSpecified Condition
1 (CSNF) - 4 (E)FRONTBelow 1 ohms
1 (CSNF) - 4 (E), 2 (CSNR) -4 (E)OFF10 kohms higher
2 (CSNR) - 4 (E)REARBelow 1 ohms
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