RX400h · Service Manual BODY

INSPECTION

Inspection

INSPECT BACK DOOR LOCK ASSEMBLY (W/O POWER BACK DOOR SYSTEM)

Check operation of the door lock.
1. Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
2. Apply battery voltage to the door lock and check operation of the latch.
  
  OK:
  
  Measurement Condition
  Specified Condition
  
  Battery positive (+) → Terminal 5
  Battery negative (-) → Terminal 3
  Latch turns to open-latch position
  
  HINT:
  
  If the result is not as specified, replace the door lock assembly.

B070506E01

Measure the resistance of the back door courtesy switch.

Standard resistance (Courtesy switch):

Tester Connection	Door Lock Latch Position	Specified Condition
1 - 2	Open-latch	Below 1 Ω
1 - 2	Half-latch	Below 1 Ω
1 - 2	Full-latch	10 kΩ or higher
1 - 2	Over-latch	10 kΩ or higher

HINT:
: If the result is not as specified, replace the door lock assembly.

INSPECT BACK DOOR LOCK ASSEMBLY (W/ POWER BACK DOOR SYSTEM)

B069878E01

Check operation of the door lock.

Using a screwdriver, push the latch in order to put the back door lock in the locked condition (full-latch position).
Apply battery voltage to the door lock and check operation of the latch.

OK:

Measurement Condition
Specified Condition

Battery positive (+) → Terminal 5
Battery negative (-) → Terminal 7
Latch turns to open-latch position

HINT:

If the result is not as specified, replace the door lock assembly.

Apply battery voltage to the door lock motor and check operation of the motor.

OK:

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 5 Battery negative (-) → Terminal 7	Close operation (Full-latch)
Battery positive (+) → Terminal 7 Battery negative (-) → Terminal 5	Release operation (Open-latch)

HINT:
: If the result is not as specified, replace the door lock assembly.

B070505E01

Measure the resistance of the back door courtesy switch.

Standard resistance (Courtesy switch):

Tester Connection	Door Lock Latch Position	Specified Condition
1 - 6	Open-latch	Below 1 Ω
1 - 6	Half-latch	Below 1 Ω
1 - 6	Full-latch	10 kΩ or higher
1 - 6	Over-latch	10 kΩ or higher

HINT:
: If the result is not as specified, replace the door lock assembly.

Measure the resistance of the back door full-latch switch.

Standard resistance (Full-latch switch):

Tester Connection	Door Lock Latch Position	Specified Condition
2 - 4	Open-latch	10 kΩ or higher
2 - 4	Half-latch	10 kΩ or higher
2 - 4	Full-latch	10 kΩ or higher
2 - 4	Over-latch	Below 1 Ω

HINT:
: If the result is not as specified, replace the door lock assembly.

Measure the resistance of the back door half-latch switch.

Standard resistance (Half-latch switch):

Tester Connection	Door Lock Latch Position	Specified Condition
3 - 4	Open-latch	Below 1 Ω
3 - 4	Half-latch	10 kΩ or higher
3 - 4	Full-latch	10 kΩ or higher
3 - 4	Over-latch	10 kΩ or higher

HINT:
: If the result is not as specified, replace the door lock assembly.

Measure the resistance of the position switch.
1. Full-latch:
  Connect the battery positive (+) lead to connector terminal 7 and the negative (-) lead to connector terminal 5.
  
  Standard resistance:
  
  Tester Connection
  Driven Gear Position
  Specified Condition
  
  8 - 9
  Release
  Below 1 Ω
  
  HINT:
  
  If the result is not as specified, replace the door lock assembly.
2. Over-latch:
  Connect the battery positive (+) lead to connector terminal 5 and the negative (-) lead to connector terminal 7.
  
  Standard resistance:
  
  Tester Connection
  Driven Gear Position
  Specified Condition
  
  8 - 9
  Close
  10 kΩ or higher
  
  HINT:
  
  If the result is not as specified, replace the door lock assembly.