- VGRS actuator
| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM000001F69001X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: C1527/27,C1528/28; VGRS Actuator Malfunction; 2007 MY LX470 [08/2006 - ] | ||
|
DTC |
C1527/27 |
VGRS Actuator Malfunction |
|
DTC |
C1528/28 |
VGRS Actuator Malfunction |
DESCRIPTION
The VGRS ECU detects the actuator operation with the turning angle sensor. If a malfunction in the turning angle sensor is found, the VGRS ECU turns on the warning light and records the DTC.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1527/27 |
The system detects that the difference between the actuator target angle and the actuator position is approximately 30° or more for 1 sec. |
|
|
C1528/28 |
The system detects a momentary interruption of the motor rotating angle sensor signal (MSU, MSV and MSW) 10 times or an open circuit for 0.12 sec. minimum. |
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK MV WIRE FOR OPEN CIRCUIT |
(a)
Check for DTC
![2007 MY LX470 [08/2006 - ]; STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: DTC CHECK / CLEAR](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; STEERING COLUMN: VARIABLE GEAR RATIO STEERING SYSTEM: DTC CHECK / CLEAR")
.
OK:
DTC C1561/61 is output.
| OK |
|
|
|
2. |
OBSERVE DATA FOR MTR REV ANG U, V, W ON INTELLIGENT TESTER |
HINT:
Determine the trouble area by checking the motor revolution angle sensor signal with the intelligent tester. When not using the intelligent tester, go to *.
(a) Connect the intelligent tester (with CAN VIM) to the DLC3.
(b) Start the engine.
(c) Using the intelligent tester, display the DATA LIST.
(d) Check the motor revolution angle sensor signal when slowly turning the steering wheel referring to the DATA LIST.
OK:
MTR REV ANG U High or Low
MTR REV ANG V: High or Low
MTR REV ANG W: High or Low
Result
|
Result |
Proceed to |
|---|---|
|
All OK |
A |
|
ALL NG |
B |
|
Others |
C |
| A |
|
| C |
|
|
|
3. |
CHECK GND CIRCUIT OF MOTOR REVOLUTION ANGLE SENSOR * |
|
(a) Turn the ignition switch OFF. (b) Check the continuity between terminal V13-7 (MGND) and V11-6 (GND) of the VGRS ECU. OK: Continuity |
|
| NG |
|
|
|
4. |
CHECK MOTOR REVOLUTION ANGLE SENSOR SIGNAL |
(a) Disconnect the V13 VGRS actuator connector.
CAUTION:
Do not apply 12 V to 10 (MV) for more than 3 minutes.
(b) Connect the positive (+) lead from the battery to terminal V13-10 (MV) and the negative (-) lead to terminal V13-3 (LGND).
(c) Measure the resistance between terminals while slowly turning the steering wheel. The steering wheel must be turned a maximum of + - 10°from center.
Standard resistance:
|
Tester Connection |
Specified Condition |
|---|---|
|
2 (MSW) - 7 (MGND) |
Below 1 k Ω or above 100 k Ω |
|
4 (MSU) - 7 (MGND) |
|
|
8 (MSV) - 7 (MGND) |
| NG |
|
| OK |
|
|
|