| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Door/Hatch | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM0000025WT003X |
| Title: DOOR / HATCH: POWER BACK DOOR SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Power Back Door Warning Buzzer Circuit |
DESCRIPTION
The power back door unit (power back door ECU) receives the power back door ON/OFF switch signal to sound the power back door warning buzzer.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (POWER BACK DOOR WARNING BUZZER) |
(a) Select the Active Test, use the Techstream to generate a control command, and check that the power back door warning buzzer sounds.
Back Door
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
PBD Buzzer |
Operate warning buzzer |
ON/OFF |
- |
OK:
Power back door warning buzzer sounds normally.
|
|
2. |
CHECK HARNESS AND CONNECTOR (BUZZER - UNIT AND BODY GROUND) |
(a) Disconnect the K37 buzzer connector.
(b) Disconnect the L36 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
K37-1 - L36-26 (BZR+) |
Always |
Below 1 Ω |
|
K37-2 - Body ground |
Always |
Below 1 Ω |
|
K37-1 - Body ground |
Always |
10 kΩ or higher |
|
|
3. |
REPLACE POWER BACK DOOR WARNING BUZZER |
(a) Replace the power back door warning buzzer
.
|
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (POWER BACK DOOR WARNING BUZZER) |
(a) Select the Active Test, use the Techstream to generate a control command, and check that the power back door warning buzzer sounds.
Back Door
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
PBD Buzzer |
Operate warning buzzer |
ON/OFF |
- |
OK:
Power back door warning buzzer sounds normally.
|
|
|