- Wire harness and connector
- VGRS ECU
- Skid control ECU
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001F6A001X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C1549/49; Vehicle Skid Control System Communication Malfunction; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
C1549/49 |
Vehicle Skid Control System Communication Malfunction |
DESCRIPTION
The VGRS ECU communicates with the skid control ECU. However, if any problems in this communication occur, the VGRS ECU turns on the warning light, records the DTC and stops VGRS operation.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1549 / 49 |
The system detects a communication malfunction from the skid control ECU for 3 seconds. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK SIGNAL WAVEFORM |
|
(a) Start the engine. |
|
(b) Using an oscilloscope, check the waveform between terminals V11-8 (VSC+) and V11-6 (GND) of the VGRS ECU.
OK:
High and low
|
(c) Using an oscilloscope, check the waveform between terminals V11-18 (VSC-) and V11-6 (GND) of the VGRS ECU. OK: High and Low |
|
| OK |
|
|
|
2. |
CHECK WIRE HARNESS (VGRS ECU - SKID CONTROL ECU) |
|
(a) Turn the ignition switch OFF. |
|
(b) Disconnect the V11 VGRS ECU connector and the A42 skid control ECU connector.
(c) Check continuity between terminals V11-8 (VSC+) - A42-17 (VSC+) and V11-18 (VSC-) - A42-18 (VSC-) of the VGRS ECU and skid control ECU.
OK:
Continuity
| NG |
|
| OK |
|
|
|