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 |
Room Temperature Sensor
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable
is reconnected (See page ).
2. REMOVE NO ...
ECU Power Source Circuit
DESCRIPTION
This is the power source for the tire pressure warning ECU.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the tire pressure warning ECU, read the IDs stored in
the old ECU using the Techstream and write them down ...