DESCRIPTION
A situation in which the theft deterrent system unexpectedly sets itself can be caused when the main body ECU (multiplex network body ECU) cannot detect whether a door is open or closed.
If the theft deterrent system unexpectedly sets itself, there may be a malfunction in a courtesy switch, the main body ECU (multiplex network body ECU) or a wire harness.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK WIRELESS DOOR LOCK SYSTEM OPERATION |
(a) Check that the auto lock function of the wireless door lock system can be canceled.
(1) Unlock the doors using wireless operation or entry operation.
(2) Within 60 seconds, open and close one of the doors.
Result
Result |
Proceed to |
---|---|
Door locks are locked |
A |
Door locks are not locked |
B |
B | ![]() |
END (SYSTEM NORMAL) |
|
2. |
READ VALUE USING TECHSTREAM (RR DOOR COURTESY SW, RL DOOR COURTESY SW, BACK DOOR COURTESY SW, FR DOOR COURTESY SW AND FL DOOR COURTESY SW |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Main Body
Tester Display |
Measurement Item / Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
RR Door Courtesy SW |
Rear door courtesy light switch assembly RH signal / ON or OFF |
OFF: Rear door RH closed ON: Rear door RH open |
- |
RL Door Courtesy SW |
Rear door courtesy light switch assembly LH signal / ON or OFF |
OFF: Rear door LH closed ON: Rear door LH open |
- |
FR Door Courtesy SW |
Front door courtesy light switch assembly RH signal / ON or OFF |
OFF: Front door RH closed ON: Front door RH open |
- |
FL Door Courtesy SW |
Front door courtesy light switch assembly LH signal / ON or OFF |
OFF: Front door LH closed ON: Front door LH open |
- |
OK:
Normal conditions listed above are displayed.
OK | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
NG | ![]() |
GO TO LIGHTING SYSTEM |
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC (for TIRE PRESSURE WARNING ECU AND RECEIVER) (USING TECHSTREAM)
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / Tire Pressure Monito ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the ECM, refer to Registration.
w/o Smart Key System: Click here
w/ Smart Key System: Click here
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System Diagram
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