Power Door Lock Control System Driver Side Door Key Lock And Unlock Switch Circuit
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING DATA LIST
INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LOCK AND UNLOCK SWITCH)
CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU)
POWER DOOR LOCK CONTROL SYSTEM - Driver Side Door Key Lock and Unlock Switch Circuit |
DESCRIPTION
The driver's door key lock and unlock switch is built into the driver's door lock assembly.When the driver's door key cylinder is turned to lock all the doors by key, there is continuity between terminals L and E of the key lock and unlock switch. When the cylinder is turned to unlock the door(s), there is continuity between terminals UL and E.Terminals L2 and UL2 of the main body ECU are connected to the door lock assembly, and door lock/unlock request signals (by key) are input to the main body ECU.The main body ECU constantly applies voltage to terminal L of the driver's door lock assembly via terminal L2. When the driver's door key cylinder is turned to lock all the doors by key, current flows from terminal L2 to terminal L.The main body ECU also applies constant voltage to terminal UL of the door lock assembly via terminal UL2. When the door key cylinder is turned in the direction to unlock the door(s) by key, current flows from terminal UL2 to terminal UL.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING DATA LIST |
Check the DATA LIST to ensure proper function of the door unlock detection switch.
Main Body:Item
| Measurement Item /
Display (Range)
| Normal Condition
| Diagnostic Note
|
Door Key SW-Lock
| Driver door lock/unlock switch lock signal (key-linked lock switch)
/ON or OFF
| ON: Driver side door key cylinder is turned to LOCK
OFF: Driver side door key cylinder is not turned to LOCK
| -
|
Door Key SW-Unlock
| Driver door lock/unlock switch unlock signal (key-linked unlock switch)
/ON or OFF
| ON: Driver side door key cylinder is turned to UNLOCK
OFF: Driver side door key cylinder is not turned to UNLOCK
| -
|
- OK:
- The display is as specified in the normal condition column.
| OK |
|
|
|
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
| 2.INSPECT FRONT DOOR LOCK ASSEMBLY (DOOR KEY LOCK AND UNLOCK SWITCH) |
Inspect LHD models.
Remove the front door lock assembly LH.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
7 - 9
| ON (Door lock set to LOCK)
| Below 1 Ω
|
7 - 9
7 - 10
| OFF (Free)
| 10 kΩ or higher
|
7 - 10
| ON (Door lock set to UNLOCK)
| Below 1 Ω
|
Inspect RHD models.
Remove the front door lock assembly RH.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
| Condition
| Specified Condition
|
5 - 8
| ON
(Door lock set to UNLOCK)
| Below 1 Ω
|
5 - 8
6 - 8
| OFF (Free)
| 10 kΩ or higher
|
6 - 8
| ON
(Door lock set to LOCK)
| Below 1 Ω
|
| | REPLACE FRONT DOOR LOCK ASSEMBLY |
|
|
| 3.CHECK WIRE HARNESS (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU) |
Disconnect the front door lock assembly connector.
Disconnect the main body ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester Connection
(Symbols)
| Condition
| Specified Condition
|
(*1) I7-9 (L) - IK-16
| Always
| Below 1 Ω
|
(*1) I7-10 (UL) - IK-7
| Always
| Below 1 Ω
|
(*1) I7-7 (E) - Body ground
| Always
| Below 1 Ω
|
(*1) I7-9 (L) - Body ground
| Always
| 10 kΩ or higher
|
(*1) I7-10 (UL) - Body ground
| Always
| 10 kΩ or higher
|
(*2) M8-6 (L) - IJ-5
| Always
| Below 1 Ω
|
(*2) M8-5 (UL) - IK-7
| Always
| Below 1 Ω
|
(*2)M8-8 (E) - Body ground
| Always
| Below 1 Ω
|
(*2) M8-6 (L) - Body ground
| Always
| 10 kΩ or higher
|
(*2) M8-5 (UL) - Body ground
| Always
| 10 kΩ or higher
|
*1: LHD
*2: RHD
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
