| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Theft Deterrent/Keyless Entry | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000021SX007X |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): DESCRIPTION (2008 LX570) | ||
|
Back Door Entry Lock and Unlock Functions do not Operate |
DESCRIPTION
When the back door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock control system, or 2) electrical key antenna (for outside luggage compartment), or 3) main body ECU (cowl side junction block LH), or 4) certification ECU (smart key ECU assembly).
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Before performing the inspection, check that there are no problems related to the "CAN Communication System" and "LIN Communication System".
PROCEDURE
|
1. |
CHECK POWER DOOR LOCK OPERATION |
(a) When the door control switch of the master switch assembly is operated, check that the locked doors unlock.
OK:
Door locks operate normally.
|
|
2. |
CHECK VEHICLE EQUIPMENT |
(a) Check if the power back door is equipped on the vehicle.
Result
|
Result |
Proceed to |
|---|---|
|
w/ Power Back Door System |
A |
|
w/o Power Back Door System |
B |
|
|
3. |
CHECK POWER BACK DOOR OPERATION |
(a) When the power back door switch is operated, check that the power back door open and close.
OK:
Power back door is open and close.
|
|
4. |
READ VALUE USING TECHSTREAM (BACK DOOR LOCK SWITCH, BACK DOOR OPENER SWITCH) |
(a) Using the Techstream, read the Data List.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Back Door Handle SW |
Back door opener switch / ON or OFF |
ON: Back door opener switch pushed OFF: Back door opener switch not pushed |
- |
Smart Access
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Tr/B-Door Lock SW |
Back door lock switch / ON or OFF |
ON: Back door lock switch pushed OFF: Back door lock switch not pushed |
- |
OK:
"ON" (switch is pushed) and "OFF" (switch is not pushed) appears on the screen.
|
|
5. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - OUTSIDE ELECTRICAL KEY ANTENNA) |
|
(a) Disconnect the E29 ECU connector. |
(b) Disconnect the K23 antenna connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E29-31 (CLG8) - K23-1 (CLG5) |
Always |
Below 1 Ω |
|
E29-32 (CG8B) - K23-2 (CLGB) |
Always |
Below 1 Ω |
|
E29-31 (CLG8) - Body ground |
Always |
10 kΩ or higher |
|
E29-32 (CG8B) - Body ground |
Always |
10 kΩ or higher |
|
|
6. |
REPLACE ELECTRICAL KEY ANTENNA (for Outside Luggage Compartment) |
(a) Replace the electrical key antenna (for outside luggage compartment)
.
|
|
7. |
CHECK ELECTRICAL KEY ANTENNA (for Outside Luggage Compartment) OPERATION |
(a) Check that the entry functions operate normally.
OK:
Entry functions operate normally.
|
|
8. |
CHECK HARNESS AND CONNECTOR (BACK DOOR OPENER SWITCH - BODY GROUND) |
|
(a) Disconnect the S7 switch connector. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
S7-2 (L) - Body ground |
Always |
Below 1 Ω |
|
|
|