| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Theft Deterrent/Keyless Entry | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000XUQ01GX |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): DESCRIPTION (2008 LX570) | ||
|
Front Passenger Side Door Entry Lock Function does not Operate |
DESCRIPTION
If the front passenger side door entry lock function does not operate but the entry unlock function operates, the communication line between the vehicle and electrical key transmitter is normal. The part at fault may be an entry lock switch circuit (certification ECU [smart key ECU assembly] → front passenger side door outside handle [entry lock switch] → front passenger side door electrical key oscillator).
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK POWER DOOR LOCK OPERATION |
(a) When the master switch assembly door control switch is operated, check that the locked doors unlock.
OK:
Door locks operate normally.
|
|
2. |
READ VALUE USING TECHSTREAM (LOCK SWITCH) |
(a) Using the Techstream, read the Data List.
Smart Access
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
P-Door Trigger Switch |
Front passenger side door outside handle lock switch / ON or OFF |
ON: Entry lock switch pushed OFF: Entry lock switch not pushed |
- |
OK:
On Techstream screen, item changes between ON and OFF according to above chart.
|
|
3. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR OUTSIDE HANDLE - DOOR ELECTRICAL KEY OSCILLATOR) |
|
(a) Disconnect the z22 oscillator connector. |
(b) Disconnect the z21 handle connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
z22-9 (TRG-) - z21-1 (TRG-) |
Always |
Below 1 Ω |
|
z22-9 (TRG-) - Body ground |
Always |
10 kΩ or higher |
|
|
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - FRONT DOOR OUTSIDE HANDLE) |
|
(a) Disconnect the E29 ECU connector. |
(b) Disconnect the z21 handle connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E29-4 (TSW2) - z21-3 (TRG+) |
Always |
Below 1 Ω |
|
E29-4 (TSW2) - Body ground |
Always |
10 kΩ or higher |
|
|
5. |
INSPECT FRONT DOOR OUTSIDE HANDLE (for Front Passenger Side) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
|
6. |
REPLACE DOOR ELECTRICAL KEY OSCILLATOR |
(a) Replace the door electrical key oscillator
.
|
|
7. |
CHECK DOOR ELECTRICAL KEY OSCILLATOR OPERATION |
(a) Check that the entry function operates normally.
OK:
Operates normally.
|
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