| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Interior | Section: Theft Deterrent/Keyless Entry | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000000W1000MX |
| Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Engine Hood Courtesy Switch Circuit |
DESCRIPTION
The engine hood courtesy switch is built into the hood lock. This switch turns on when the engine hood is opened and turns off when the engine hood is closed.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM (ENGINE HOOD COURTESY SWITCH) |
(a) Using the Techstream, read the Data List.
Smart Access
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Hood Courtesy Switch |
Engine hood courtesy switch / ON or OFF |
ON: Engine hood open OFF: Engine hood closed |
- |
OK:
ON (engine hood is open) appears on screen.
|
|
2. |
INSPECT HOOD LOCK ASSEMBLY (ENGINE HOOD COURTESY SWITCH) |
(a) Remove the hood lock
.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
Unlock position |
Below 1 Ω |
|
1 - 2 |
Lock position |
10 kΩ or higher |
|
|
3. |
CHECK HARNESS AND CONNECTOR (HOOD LOCK - CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] AND BODY GROUND) |
(a) Disconnect the E30 ECU connector.
(b) Disconnect the A8 switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E30-24 (HSW) - A8-2 |
Always |
Below 1 Ω |
|
A8-1 - Body ground |
Always |
Below 1 Ω |
|
E30-24 (HSW) or A8-2 - Body ground |
Always |
10 kΩ or higher |
|
|
|