DESCRIPTION
The multiplex network door ECU receives a back door open/closed signal from the back door lock.
WIRING DIAGRAM
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (BACK DOOR COURTESY LIGHT SWITCH) |
(a) Using the Techstream, read the Data List (See page
).
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Back Door Courtesy Switch |
Back door courtesy light switch signal / ON or OFF |
ON: Back door open OFF: Back door closed |
- |
OK:
Tester display changes according to opening and closing of back door.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY LIGHT SWITCH) |
(a) Remove the back door lock (See page ).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2 - 3 |
Open-latch |
Below 1 Ω |
Full-latch |
10 kΩ or higher |
![]() |
Full-latch |
![]() |
Open-latch |
NG | ![]() |
REPLACE BACK DOOR LOCK ASSEMBLY |
|
3. |
CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MULTIPLEX NETWORK DOOR ECU) |
(a) Disconnect the W8 back door lock connector.
(b) Disconnect the W10 multiplex network door ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
W8-2 (S) - W10-10 (BDCY) |
Always |
Below 1 Ω |
W8-2 (S) - Body ground |
Always |
10 kΩ or higher |
W8-3 (E) - W10-18 (CTYE) |
Always |
Below 1 Ω |
W8-3 (E) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE MULTIPLEX NETWORK DOOR ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place
and turn off the air conditioning system.
Check to see if steam is coming
out from under the hood.
If you see steam:
Stop the engine. Carefully lift the hood after the steam subsides and then ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK FRONT POWER SEAT SWITCH LH
(a) Disconnect the b18 and b19 connectors from the front power seat switch LH.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
Terminal No. (Symbol)
...