RX400h · Service Manual BODY

INSPECTION

Inspection

INSPECT SEAT HEATER SWITCH

Inspect the LH side seat heater switch operation.
1. Measure the resistance according to the value(s) in the table below.
  
  Resistance:
  
  Tester Connection
  Switch Position
  Specified Condition
  
  2(IG) - 4(SWL)
  OFF
  10 kΩ or higher
  
  2(IG) - 4(SWL)
  ON
  Below 1 Ω
  
  3(RVL) - 4(SWL)
  ON (Minimum to Maximum)
  0.35 to 3.4 kΩ
  
  If the result is not as specified, replace the switch.
2. Turn the seat heater switch on and check if the seat heater switch indicator comes on.
  
  OK:
  
  Measurement Condition
  Specified Condition
  
  Battery positive (+) → Terminal 2(IG)
  Battery negative (-) → Terminal 7(E)
  Comes on
  
  If the result is not as specified, replace the switch.
3. Check if the seat heater switch indicator comes on.
  
  OK:
  
  Measurement Condition
  Specified Condition
  
  Battery positive (+) → Terminal 8(ILL+)
  Battery negative (-) → Terminal 5(ILL-)
  Comes on
  
  If the result is not as specified, replace the switch.

Inspect the RH side seat heater switch operation.
1. Measure the resistance according to the value(s) in the table below.
  
  Resistance:
  
  Tester Connection
  Switch Position
  Specified Condition
  
  2(IG) - 6(SWR)
  OFF
  10 kΩ or higher
  
  2(IG) - 6(SWR)
  ON
  Below 1 Ω
  
  1(RVR) - 6(SWR)
  ON (Minimum to Maximum)
  0.35 to 3.4 kΩ
  
  If the result is not as specified, replace the switch.
2. Turn the seat heater switch on and check if the seat heater switch indicator comes on.
  
  OK:
  
  Measurement Condition
  Specified Condition
  
  Battery positive (+) → Terminal 2(IG)
  Battery negative (-) → Terminal 7(E)
  Comes on
  
  If the result is not as specified, replace the switch.
3. Check if the seat heater switch indicator comes on.
  
  OK:
  
  Measurement Condition
  Specified Condition
  
  Battery positive (+) → Terminal 8(ILL+)
  Battery negative (-) → Terminal 5(ILL-)
  Comes on
  
  If the result is not as specified, replace the switch.