Lexus IS250 IS220d GSE20 ALE20 - DOOR LOCK
INSPECT FRONT DOOR LOCK ASSEMBLY (DOUBLE LOCK POSITION SWITCH)
CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - DOUBLE DOOR LOCK ECU)
POWER DOOR LOCK CONTROL SYSTEM - Front Passenger Side Double Lock Position Switch Circuit
DESCRIPTION
The front passenger door double lock position switch is built into the front passenger door lock assembly. The switch turns on when the front passenger door double lock is set and turns off when the double lock is released.
The double door lock ECU is connected to the front passenger door lock assembly via terminal DLPP or DLPD and front passenger door double lock set/released state signals are input to the ECU.
The double door lock ECU applies voltage to terminal DLSR of the double lock position switch via terminal DLPP or DLPD. When the switch is on (there is continuity between the switch terminals), a set state signal is input to the ECU. When the switch is off (there is no continuity between the switch terminals), a release state signal is input.
The double door lock ECU sends front passenger door double lock set/released state signal to the main body ECU RH using multiplex communication.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.INSPECT FRONT DOOR LOCK ASSEMBLY (DOUBLE LOCK POSITION SWITCH) |
LHD Models:
Remove the front door lock assembly RH.
Apply battery voltage and set the door lock motor to the lock position.
- OK:
Measurement Condition Specified Condition Battery positive (+) →Terminal 2
Battery negative (-) →Terminal 1Lock
Apply battery voltage to the door lock and check operation of the double lock motor.
- OK:
Measurement Condition Specified Condition Battery positive (+) →Terminal 4
Battery negative (-) →Terminal 3Double Locking System is set Battery positive (+) →Terminal 3
Battery negative (-) →Terminal 4Double Locking System is unset
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Double Lock Position Specified Condition 9 - 10 Set Below 1 Ω 9 - 10 Unset 10 kΩ or higher
RHD Models:
Remove the front door lock assembly LH.
Apply battery voltage and set the door lock motor to the lock position.
- OK:
Measurement Condition Specified Condition Battery positive (+) →Terminal 4
Battery negative (-) →Terminal 3Lock
Apply battery voltage to the door lock and check operation of the double lock motor.
- OK:
Measurement Condition Specified Condition Battery positive (+) →Terminal 2
Battery negative (-) →Terminal 1Double Locking System is set Battery positive (+) →Terminal 1
Battery negative (-) →Terminal 2Double Locking System is unset
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection Double Lock Position Specified Condition 5 - 6 Set Below 1 Ω 5 - 6 Unset 10 kΩ or higher
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| OK | |
| 2.CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - DOUBLE DOOR LOCK ECU) |
LHD Models:
Disconnect the front door lock assembly RH connector.
Disconnect the double door lock ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
(Symbols)Condition Specified Condition L8-9 (DLSR) - P34-5 (DLPD) Always Below 1 Ω L8-9 (DLSR) - Body ground Always 10 kΩ or higher L8-10 (E) - Body ground Always Below 1 Ω
RHD Models:
Disconnect the front door lock assembly LH connector.
Disconnect the double door lock ECU assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
(Symbols)Condition Specified Condition M2-6 (DLSR) - P34-6 (DLPP) Always Below 1 Ω M2-6 (DLSR) - Body ground Always 10 kΩ or higher M2-5 (E) - Body ground Always Below 1 Ω
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| OK | ||
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