| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM0000018BJ005X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: LIGHTING: LIGHTING SYSTEM: IG Power Source Circuit; 2007 MY LX470 [08/2006 - ] | ||
|
IG Power Source Circuit |
DESCRIPTION
When the ignition switch is turned to the ACC position, battery voltage is applied to the terminal ACC of ECU and when the ignition switch is turned to the ON position, battery positive is applied to the terminal SIG of the ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
INSPECT FUSE (ACC, ECU-IG1) |
(a) Remove the ACC and ECU-IG1 fuses from the cowl side junction block LH.
(b) Measure the resistance of the fuses.
Standard resistance:
Below 1 Ω
| NG |
|
|
|
2. |
CHECK WIRE HARNESS (BODY ECU (MAIN) - BATTERY) |
(a) Remove the body ECU.
(b) Measure the voltage of the wire harness side connector.
Standard voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
10 (SIG) - Body ground |
Ignition switch ON |
10 to 14 V |
|
22 (ACC) - Body ground |
Ignition switch ACC |
10 to 14 V |
| NG |
|
|
|
3. |
CHECK WIRE HARNESS (BODY ECU (MAIN) - BODY GROUND) |
| NG |
|
| OK |
|
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE |
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