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Last Modified: 11-27-2007 |
1.6 G |
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Service Category: Vehicle Interior |
Section: Seat |
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Model Year: 2008 |
Model: LX570 |
Doc ID: RM0000030EY008X |
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Title: SEAT: SEAT HEATER SYSTEM: ON-VEHICLE INSPECTION (2008 LX570) |
ON-VEHICLE INSPECTION
1. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY (for Front Side)
(a) Disconnect the c13 and c1 heater control connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for LH
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Tester Connection
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Condition
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Specified Condition
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c13-6 (E) - Body ground
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Always
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Below 1 Ω
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for RH
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Tester Connection
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Condition
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Specified Condition
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c1-6 (E) - Body ground
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Always
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Below 1 Ω
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If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
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Tester Connection
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Switch Condition
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Specified Condition
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c13-1 (SWL) - c13-6 (E)
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Engine switch on (IG), seat heater switch off
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Below 1 V
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Engine switch on (IG), seat heater switch on
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11 to 14 V
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c13-4 (B) - c13-6 (E)
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Engine switch off
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Below 1 V
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Engine switch on (IG)
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11 to 14 V
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for RH
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Tester Connection
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Switch Condition
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Specified Condition
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c1-1 (SWR) - c1-6 (E)
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Engine switch on (IG), seat heater switch off
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Below 1 V
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Engine switch on (IG), seat heater switch on
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11 to 14 V
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c1-4 (B1) - c1-6 (E)
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Engine switch off
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Below 1 V
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Engine switch on (IG)
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11 to 14 V
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If the result is not as specified, there may be a malfunction on the wire harness side.
(d) Connect the c13 and c1 heater control connectors.
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(e) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for LH
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Tester Connection
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Switch Condition
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Specified Condition
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c13-5 (THL) - Body ground
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Engine switch on (IG), seat heater switch on, volume Min → Max
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Gradual increase from below 1 V to 11 to 14 V
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for RH
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Tester Connection
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Switch Condition
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Specified Condition
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c1-5 (THR) - Body ground
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Engine switch on (IG), seat heater switch on, volume Min → Max
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Gradual increase from below 1 V to 11 to 14 V
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If the result is not as specified, the seat heater control may have a malfunction.
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