DESCRIPTION
The key unlock warning switch assembly turns on when the ignition key is inserted into the ignition key cylinder and turns off when the ignition key is removed.
The main body ECU (driver side junction block assembly) operates the key confinement prevention function while the key unlock warning switch assembly is on.
WIRING DIAGRAM
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (UNLOCK WARNING SWITCH ASSEMBLY) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Select the item below in the Data List and then read the display on the Techstream.
Main Body
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Key Unlock Warning SW |
Unlock warning switch signal/ON or OFF |
ON: Key inserted into ignition key cylinder OFF: Key removed from ignition key cylinder |
- |
OK:
When the key is in the ignition key cylinder, ON appears on the Techstream.
OK | ![]() |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
2. |
INSPECT UNLOCK WARNING SWITCH ASSEMBLY |
(a) Remove the unlock warning switch assembly (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D24-1 (UN+) - D24-2 (UN-) |
Free (Key removed) |
10 kΩ or higher |
D24-1 (UN+) - D24-2 (UN-) |
Pushed (Key set) |
Below 1 Ω |
*1 |
Component without harness connected (Unlock Warning Switch Assembly) |
NG | ![]() |
REPLACE UNLOCK WARNING SWITCH ASSEMBLY |
|
3. |
CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - BODY GROUND) |
(a) Disconnect the D24 unlock warning switch assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D24-2 (UN-) - Body ground |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Unlock Warning Switch Assembly) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH ASSEMBLY - MAIN BODY ECU) |
(a) Disconnect the D51 main body ECU (driver side junction block assembly) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D24-1 (UN+) - D51-5 (KSW) |
Always |
Below 1 Ω |
*1 |
Front view of wire harness connector (to Main Body ECU (Driver Side Junction Block Assembly)) |
*2 |
Front view of wire harness connector (to Unlock Warning Switch Assembly) |
OK | ![]() |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Antenna Coil Open / Short (B2784)
DESCRIPTION
The transponder key coil is built into the transponder key amplifier and receives
a key code signal from the transponder chip in the key. This signal is amplified
by the amplifier, then it is output to the transponder key ECU assembly.
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL MANUAL VALVE
(a) Coat the manual valve with ATF and install it to the transmission
valve body assembly.
2. INSTALL TRANSMISSION VALVE BODY ASSEMBLY
(a) Coat th ...
System Description
SYSTEM DESCRIPTION
1. ILLUMINATED ENTRY SYSTEM
(a) The illuminated entry system has the following control functions:
Control
Outline
Lights that Operate
Actuation Area-linked*2
When a registered k ...