| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Mirror (ext) | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002NOO007X |
| Title: MIRROR (EXT): POWER MIRROR CONTROL SYSTEM: SYSTEM DESCRIPTION (2008 LX570) | ||
|
Power Mirrors do not Return to Memorized Position |
SYSTEM DESCRIPTION
When the seat memory switch 1, seat memory switch 2 or seat memory switch 3 is pressed, the position control ECU and switch mirror position signal is sent through the CAN communication line to the outer mirror control ECU. The outer mirror control ECU then activates the mirror control motors to move the mirrors to the previously recorded positions.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK DTC |
(a) Use the Techstream to check if the CAN communication system is functioning normally
.
Result
|
Result |
Proceed to |
|---|---|
|
CAN DTC is not output |
A |
|
CAN DTC is output |
B |
|
|
2. |
CHECK POWER MIRROR CONTROL FUNCTION |
(a) Check that the mirror surface positions of the outer rear view mirror LH and RH can be moved using the outer mirror switch.
OK:
Mirror surface positions of the outer rear view mirror LH and RH can be moved using the outer mirror switch.
|
|
3. |
READ VALUE USING TECHSTREAM (MIRROR POSITION MEMORY) |
(a) Check the Data List for proper functioning of the mirror position memory
.
Mirror
|
Tester Display |
Measurement Item/Display |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Mirror Memory No.1 |
Mirror position memorized in seat memory switch 1 / ON or OFF |
ON: Memorized OFF: Not memorized |
- |
|
Mirror Memory No.2 |
Mirror position memorized in seat memory switch 2 / ON or OFF |
ON: Memorized OFF: Not memorized |
- |
|
Mirror Memory No.3 |
Mirror position memorized in seat memory switch 3 / ON or OFF |
ON: Memorized OFF: Not memorized |
- |
OK:
On the Techstream screen, each item changes between ON and OFF according to above chart.
|
|
4. |
READ VALUE USING TECHSTREAM (MIRROR POSITION SENSOR) |
(a) Check the Data List for proper functioning of the mirror position sensor
.
Mirror
|
Tester Display |
Measurement Item/Display |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
RH Mir Position Sensor V |
Passenger side mirror vertical sensor voltage / MIN: 0 V, MAX: 5 V |
Within range from 0 to 5 V |
- |
|
RH Mir Position Sensor H |
Passenger side mirror horizontal sensor voltage / MIN: 0 V, MAX: 5 V |
Within range from 0 to 5 V |
- |
|
LH Mir Position Sensor V |
Driver side mirror vertical sensor voltage / MIN: 0 V, MAX: 5 V |
Within range from 0 to 5 V |
- |
|
LH Mir Position Sensor H |
Driver side mirror horizontal sensor voltage / MIN: 0 V, MAX: 5 V |
Within range from 0 to 5 V |
- |
OK:
When mirror control switch is operated, voltage changes within range shown in above chart.
Result
|
Result |
Proceed to |
|---|---|
|
LH side mirror does not operate normally |
A |
|
RH side mirror does not operate normally |
B |
|
Mirror operates normally |
C |
|
|
5. |
CHECK OUTER MIRROR CONTROL ECU (POWER SOURCE FOR MIRROR POSITION SENSOR) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
I18-2 (LVC) - I18-3 (LE1) |
Engine switch on (IG) |
4.7 to 5.5 V |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I18-3 (LE1) - Body ground |
Always |
Below 1 Ω |
|
|
6. |
CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR LH - OUTER MIRROR CONTROL ECU) |
|
(a) Disconnect the I18 ECU connector. |
(b) Disconnect the I15 mirror connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I18-2 (LVC) - I15-8 (VC) |
Always |
Below 1 Ω |
|
I18-3 (LE1) - I15-17 (E1) |
||
|
I18-4 (VSR) - I15-18 (VSRL) |
||
|
I18-5 (HSRL) - I15-9 (HSRL) |
||
|
I15-8 (VC) - Body ground |
Always |
10 kΩ or higher |
|
I15-17 (E1) - Body ground |
||
|
I15-18 (VSRL) - Body ground |
||
|
I15-9 (HSRL) - Body ground |
|
|
7. |
CHECK OUTER MIRROR CONTROL ECU (POWER SOURCE FOR MIRROR POSITION SENSOR) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
I18-22 (RVC) - I18-23 (RE1) |
Engine switch on (IG) |
4.7 to 5.5 V |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I18-23 (RE1) - Body ground |
Always |
Below 1 Ω |
|
|
8. |
CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR RH - OUTER MIRROR CONTROL ECU) |
|
(a) Disconnect the I18 ECU connector. |
(b) Disconnect the I7 mirror connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I18-22 (RVC) - I7-8 (VC) |
Always |
Below 1 Ω |
|
I18-23 (RE1) - I7-17 (E1) |
||
|
I18-24 (VSRR) - I7-18 (VSSR) |
||
|
I18-25 (HSRR) - 7-9 (HSSR) |
||
|
I7-8 (VC) - Body ground |
Always |
10 kΩ or higher |
|
I7-17 (E1) - Body ground |
||
|
I7-18 (VSSR) - Body ground |
||
|
I7-9 (HSSR) - Body ground |
|
|
|