Door Lock Control Switch Circuit: Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

READ VALUE USING TECHSTREAM (DOOR LOCK SWITCH)

Connect Techstream to the DLC3.
Turn the ignition switch on (IG).
Turn the Techstream on.
Enter the following menus: Body Electrical / Main Body / Data List.

Read the Data List according to the display on the Techstream.

MAIN BODY:

Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
Door Lock SW-Lock	Door lock switch signal (LOCK) / ON or OFF	ON: Lock side of the door control switch is pushed OFF: Lock side of the door control switch is not pushed	-
Door Lock SW-Unlock	Door lock switch signal (UNLOCK) / ON or OFF	ON: Unlock side of the door control switch is pushed OFF: Unlock side of the door control switch is not pushed	-

On the Techstream screen, each item changes between ON and OFF according to the chart above.

NG → See step 2

OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

INSPECT DOOR CONTROL SWITCH

for Driver Side:

Remove the multiplex network master switch assembly.

Fig 1: Identifying Door Control Switch Assembly Connector Terminal Identification (Driver Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the multiplex network master switch.

Resistance

Tester Connection	Switch Condition	Specified Condition
4 - 2	Locked	Below 1 Ω
4 - 2 2 - 14	OFF	10 kΩ or higher
2 - 14	Unlocked	Below 1 Ω

for Front Passenger Side:

Remove the door control switch assembly.

Fig 2: Identifying Door Control Switch Assembly Connector Terminal Identification (Front Passenger Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the door control switch.

Resistance

Tester Connection	Switch Condition	Specified Condition
2 - 3	Locked	Below 1 Ω
2 - 3 1 - 2	OFF	10 kΩ or higher
1 - 2	Unlocked	Below 1 Ω

Result

Result	Proceed to
OK	A
NG (for Driver Side)	B
NG (for Front Passenger Side)	C

B → REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

C → REPLACE DOOR CONTROL SWITCH

A: Go to next step

CHECK WIRE HARNESS (DOOR CONTROL SWITCH - INSTRUMENT PANEL J/B)

for Driver Side:

Disconnect the IK connector.

Measure the resistance of the wire harness side connectors.

Resistance

Tester Connection	Condition	Specified Condition
IK-15 (L1) - H6-4	Always	Below 1 Ω
IK-12 (UL1) - H6-14	Always	Below 1 Ω
IK-15 (L1) - Body ground	Always	10 kΩ or higher
IK-12 (UL1) - Body ground	Always	10 kΩ or higher
H6-2 - Body ground	Always	Below 1 Ω

for Front Passenger Side:

Disconnect the IJ connector.

Measure the resistance of the wire harness side connectors.

Resistance

Tester Connection	Condition	Specified Condition
IJ-3 (L1) - G5-3	Always	Below 1 Ω
IJ-4 (UL1) - G5-1	Always	Below 1 Ω
IJ-3 (L1) - Body ground	Always	10 kΩ or higher
IJ-4 (UL1) - Body ground	Always	10 kΩ or higher
G5-2 - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK → PROCEED TO PROBLEM SYMPTOMS TABLE NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE