The outer mirror switch assembly sends the mirror adjust switch signals to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then sends the received mirror adjust switch signals to the outer mirror control ECU assembly (front passenger door) via CAN communication. On receiving the signal, the outer mirror control ECU assembly (front passenger door) operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly (front passenger door), to adjust the mirror surface position.
The power mirror control system (w/ Memory) uses the CAN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system (w/ Memory) after confirming that the communication systems are functioning properly.
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the G13 outer rear view mirror assembly (front passenger door).
Disconnect the G19 outer mirror control ECU assembly (front passenger door).
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(G13,G19)Location & Routingewd_type=routing;type=c,c;code=G13,G19 Click Connector(G13)Body>Front Door Wire RH / Front Door Wire LH>Outer Rear View Mirror Assembly RHewd_type=component;type=c;code=G13;pinno=7,9,8 Click Connector(G19)Body>Front Door Wire RH / Front Door Wire LH>Outer Mirror Control ECU Assembly RHewd_type=component;type=c;code=G19;pinno=1,9,10 |
||
| G13-7 (MV) - G19-1 (RMVR) | Always | Below 1 Ω |
| G13-9 (MH) - G19-9 (RMHR) | Always | Below 1 Ω |
| G13-8 (M+) - G19-10 (RM+R) | Always | Below 1 Ω |
| G13-7 (MV) or G19-1 (RMVR) - Body ground | Always | 10 kΩ or higher |
| G13-9 (MH) or G19-9 (RMHR) - Body ground | Always | 10 kΩ or higher |
| G13-8 (M+) or G19-10 (RM+R) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the E38 main body ECU (multiplex network body ECU).
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(I8,E38)Location & Routingewd_type=routing;type=c,c;code=I8,E38 Click Connector(I8)Body>No. 2 Front Door Wire RH / No. 2 Front Door Wire LH>Outer Mirror Switch Assemblyewd_type=component;type=c;code=I8;pinno=7,4,5 Click Connector(E38)Instrument Panel>Instrument Panel Wire / Telephone Computer Wire>Multiplex Network Body ECUewd_type=component;type=c;code=E38;pinno=21,22,20 |
||
| I8-7 (E) - E38-21 (MIRE) | Always | Below 1 Ω |
| I8-4 (M+) - E38-22 (MIRB) | Always | Below 1 Ω |
| I8-5 (MSW) - E38-20 (MIRS) | Always | Below 1 Ω |
| I8-7 (E) or E38-21 (MIRE) - Body ground | Always | 10 kΩ or higher |
| I8-4 (M+) or E38-22 (MIRB) - Body ground | Always | 10 kΩ or higher |
| I8-5 (MSW) or E38-20 (MIRS) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Temporarily replace the outer mirror control ECU assembly with a normally functioning one.
| Proceed to |
|---|
| NEXT |
NEXT
Check the power mirror control system.
| Result | Proceed to |
|---|---|
| Power mirror control function operates normally | A |
| Power mirror control function does not operate normally | B |
A
B