- Battery
- Power source circuit
- Skid control ECU
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001A6R005X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1257/57; Power Supply Drive Circuit; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
C1257/57 |
Power Supply Drive Circuit |
DESCRIPTION
|
DTC No. |
DTC detection Condition |
Trouble Area |
|---|---|---|
|
C1257/57 |
When a malfunction inside ECU is detected |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
INSPECT BATTERY |
(a) Check the battery voltage.
Standard voltage:
11 to 14 V
| NG |
|
|
|
2. |
READ VALUE USING INTELLIGENT TESTER (IG VOLTAGE) |
(a) Using the DATA LIST, check for proper functioning of the IG voltage.
Skid control ECU assembly
|
Item |
Measurement Item/Range (Display) |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
IG VOLTAGE |
ECU IG power voltage/ UNDER or NORMAL or OVER |
- |
- |
OK:
Display is NORMAL
| OK |
|
|
|
3. |
CHECK WIRE HARNESS (SKID CONTROL ECU ASSEMBLY - BATTERY AND BODY GROUND) |
|
(a) Measure the voltage of the wire harness side connectors. Standard voltage:
(b) Measure the resistance of the wire harness side connectors. Standard resistance:
|
|
| NG |
|
|
|
4. |
INSPECT FUSE (ECU-IG1) |
(a) Remove the ECU-IG1 fuse from the cowl side junction block LH.
(b) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ω
| NG |
|
| OK |
|
|
|