Door Lock. Power Door Lock Control System (For Sedan) All Doors Cannot Be Locked / Unlocked Simultaneously

The main body ECU receives switch signals from the door control switch and driver side door key cylinder, and activates the door lock motor on each door accordingly.

WIRING DIAGRAM

Yaris. Ncp93, 131.Door Lock.Power Door Lock Control System (For Sedan).Power Door Lock Control System (For Sedan) All Doors Cannot Be Locked / Unlocked Simultaneously

INSPECTION PROCEDURE

1.INSPECT FRONT DOOR LOCK ASSEMBLY LH

Apply the battery voltage to the door lock motor and measure the resistance.

Standard resistance:

Tester Connection	Condition	Specified Condition
8 (LSSR) - 7 (E)	Battery positive (+) → Terminal 1 Battery negative(-) → Terminal 4	Below 1 Ω
8 (LSSR) - 7 (E)	Battery positive (+) → Terminal 4 Battery negative(-) → Terminal 1	10 kΩ or higher

REPLACE FRONT DOOR LOCK ASSEMBLY LH (YARIS_NCP93 RM0000029X700HX.html)

OK

2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR LOCK ASSEMBLY LH)

Disconnect the D33main body ECU connector.

Disconnect the G5 door lock connector.

Measure the resistance.
Standard resistance:
Tester Connection
Specified Condition
D33-21 (LSWD) - G5-8 (LSSR)
Below 1 Ω
D33-21 (LSWD) or G5-8 (LSSR) - Body ground
10 kΩ or higher

Reconnect the main body ECU connector.

Reconnect the door lock connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.CHECK DOOR LOCK OPERATION

Proceed to the next step according to the symptom listed in the table below.

Result:

Symptom	Proceed to
Doors cannot be locked using door control switch (for front driver door side)	A
Doors cannot be locked using driver side door key cylinder	B
Doors cannot be locked using front passenger side door key cylinder	C
Doors cannot be locked using door control switch (for passenger side)	D

Go to step 6

Go to step 8

Go to step 10

A

4.INSPECT DOOR CONTROL SWITCH (for Front Driver Door Side)

w/ Power window:
1. Disconnect the G1 door control switch (for front driver door side) connector.
2. Measure the resistance of the switch.
  Standard resistance:
  Tester Connection
  Switch Condition
  Specified Condition
  2 (L) - 1 (E)
  Lock
  Below 1 Ω
  9 (UL) - 1 (E)
  Unlock
  Below 1 Ω
  2 (L) - 1 (E)
  OFF
  10 kΩ or higher
  9 (UL) - 1 (E)
  OFF
  10 kΩ or higher
3. Reconnect the door control switch (for front driver door side) connector.

w/o Power window:
1. Disconnect the G7 door control switch (for front driver door side) connector.
2. Measure the resistance of the switch.
  Standard resistance:
  Tester Connection
  Switch Condition
  Specified Condition
  3 (L) - 4 (E)
  Lock
  Below 1 Ω
  2 (UL) - 4 (E)
  Unlock
  Below 1 Ω
  3 (L) - 4 (E)
  OFF
  10 kΩ or higher
  2 (UL) - 4 (E)
  OFF
  10 kΩ or higher
3. Reconnect the door control switch (for front driver door side) connector.

REPLACE DOOR CONTROL SWITCH (for Front Driver Door Side) (YARIS_NCP93 RM0000029X400GX.html)

OK

5.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL SWITCH (Front Driver Door Side))

w/ Power window:
1. Disconnect the 4H main body ECU connector.
2. Disconnect the G1 door control switch (for front driver door side) connector.
3. Measure the resistance.
  Standard resistance:
  Tester Connection
  Specified Condition
  4H-5(UL1) - G1-9(UL)
  Below 1 Ω
  4H-4(L1) - G1-2(L)
  Below 1 Ω
  4H-5(UL1) or G1-9(UL) - Body ground
  10 kΩ or higher
  4H-4(L1) or G1-2(L) - Body ground
  10 kΩ or higher
4. Reconnect the main body ECU connector.
5. Reconnect the door control switch (for front driver door side) connector.

w/o Power window:

Disconnect the 4H main body ECU connector.
Disconnect the G7 door control switch (for front driver door side) connector.

Measure the resistance.

Standard resistance:

Tester Connection	Specified Condition
4H-5 (UL1) - G7-2 (UL)	Below 1 Ω
4H-4 (L1) - G7-3 (L)	Below 1 Ω
4H-5 (UL1) or G7-2 (UL) - Body ground	10 kΩ or higher
4H-4 (L1) or G7-3 (L) - Body ground	10 kΩ or higher

Reconnect the main body ECU connector.
Reconnect the door control switch (for front driver door side) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

6.READ VALUE USING TECHSTREAM

Connect a Techstream to the DLC3.

Turn the ignition switch ON.

Turn the tester on.

Enter the following menus: Body Electrical / Main Body / Data List.

According to the display on tester, read on the "Data List".

Main Body:

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Door Key SW-Lock	Door key-linked lock switch signal/ ON or OFF	ON: Door key cylinder is turned to lock position OFF: Driver side door key cylinder is turned to unlock position	-

Main Body:

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Door Key SW-Unlock	Door key-linked lock switch signal/ ON or OFF	ON: Door key cylinder is turned to lock position OFF: Driver side door key cylinder is turned to unlock position	-

OK:: ON (driver side door key cylinder is turned to lock/unlock position) appears on tester screen.

REPLACE MAIN BODY ECU

NG

7.CHECK HARNESS AND CONNECTOR (DRIVER SIDE DOOR LOCK ASSEMBLY - MAIN BODY ECU)

Disconnect the D33 and 4H main body ECU connectors.

Disconnect the G5 door lock connector.

Measure the resistance.

Standard resistance:

Tester Connection	Specified Condition
D33-14 (UL3) - G5-10 (UL)	Below 1 Ω
4H-7 (L2) - G5-9 (L)	Below 1 Ω
D33-14 (UL3) or G5-10 (UL) - Body ground	10 kΩ or higher
4H-7 (L2) or G5-9 (L) - Body ground	10 kΩ or higher

Reconnect the main body ECU connectors.

Reconnect the door lock connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

8.READ VALUE USING TECHSTREAM

Connect a Techstream to the DLC3.

Turn the ignition switch to ON.

Turn the tester on.

Enter the following menus: Body Electrical / Main Body / Data List.

According to the display on tester, read on the "Data List".

Main Body:

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Door Key SW-Lock	Door key-linked lock switch signal/ ON or OFF	ON: Door key cylinder is turned to lock position OFF: Driver side door key cylinder is turned to unlock position	-

Main Body:

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
D Door Key SW-UL	Door key-linked unlock switch signal/ ON or OFF	ON: Door key cylinder is turned to unlock position OFF: Door key cylinder is turned to lock position	-

OK:: ON (driver side door key cylinder is turned to lock/unlock position) appears on screen.

REPLACE MAIN BODY ECU

NG

9.CHECK HARNESS AND CONNECTOR (PASSENGER SIDE DOOR LOCK ASSEMBLY - MAIN BODY ECU)

Disconnect the 4H main body ECU connector.

Disconnect the F5 front door lock assembly connector.

Measure the resistance.

Standard resistance:

Tester Connection	Specified Condition
4H-15 (UL2) - F5-5 (UL)	Below 1 Ω
4H-16 (L2) - F5-6 (L)	Below 1 Ω
4H-15 (UL2) or F5-5 (UL) - Body ground	10 kΩ or higher
4H-16 (L2) or F5-6 (L) - Body ground	10 kΩ or higher

Reconnect the main body ECU connector.

Reconnect the front door lock assembly connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

10.INSPECT DOOR CONTROL SWITCH (for Front Passenger Door Side)

Disconnect the F7 door control switch (for front passenger door side) connector.

Measure the resistance of the switch.
Standard resistance:
Tester Connection
Switch Condition
Specified Condition
3 (L) - 4 (E)
Lock
Below 1 Ω
2 (UL) - 4 (E)
Unlock
Below 1 Ω
3 (L) - 4 (E)
OFF
10 kΩ or higher
2 (UL) - 4 (E)
OFF
10 kΩ or higher

Reconnect the door control switch (for front passenger door side) connector.

REPLACE DOOR CONTROL SWITCH (for Front Passenger Door Side) (YARIS_NCP93 RM0000029X400GX.html)

OK

11.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL SWITCH (Passenger Door Side))

Disconnect the 4C and 4E main body ECU connector.

Disconnect the F7 door control switch (for front passenger door side) connector.

Measure the resistance.

Standard resistance:

Tester Connection	Specified Condition
4C-10 (UL1) - F7-2 (UL)	Below 1 Ω
4E-11 (L1) - F7-3 (L)	Below 1 Ω
4C-10 (UL1) or F7-2 (UL) - Body ground	10 kΩ or higher
4E-11 (L1) or F7-3 (L) - Body ground	10 kΩ or higher

Reconnect the main body ECU connector.

Reconnect the door control switch (for front passenger door side) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

REPLACE MAIN BODY ECU

Tester Connection	Specified Condition
D33-21 (LSWD) - G5-8 (LSSR)	Below 1 Ω
D33-21 (LSWD) or G5-8 (LSSR) - Body ground	10 kΩ or higher

Tester Connection	Switch Condition	Specified Condition
2 (L) - 1 (E)	Lock	Below 1 Ω
9 (UL) - 1 (E)	Unlock	Below 1 Ω
2 (L) - 1 (E)	OFF	10 kΩ or higher
9 (UL) - 1 (E)	OFF	10 kΩ or higher

Tester Connection	Specified Condition
4H-5(UL1) - G1-9(UL)	Below 1 Ω
4H-4(L1) - G1-2(L)	Below 1 Ω
4H-5(UL1) or G1-9(UL) - Body ground	10 kΩ or higher
4H-4(L1) or G1-2(L) - Body ground	10 kΩ or higher