Lexus ES: Power Mirror cannot be Adjusted with Power Mirror Switch
DESCRIPTION
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 each outer mirror control ECU assembly via CAN communication. Based on this signal, each outer mirror control ECU assembly operates the vertical and horizontal mirror motors to adjust the mirror surface position.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
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.
Click here
.gif)
-
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
Click here
PROCEDURE
| 1. | READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream.
Body Electrical > Main Body > Data List| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Mirror Selection SW (R) | Mirror select switch signal for RH mirror | OFF or ON | OFF: Mirror select switch off ON: Mirror select switch R switch on | - |
| Mirror Selection SW (L) | Mirror select switch signal for LH mirror | OFF or ON | OFF: Mirror select switch off ON: Mirror select switch L switch on | - |
| Mirror Position SW (R) | Mirror adjust switch signal (Right) | OFF or ON | OFF: Mirror adjust switch not pushed right ON: Mirror adjust switch pushed right | Check with the mirror select switch L or R selected |
| Mirror Position SW (L) | Mirror adjust switch signal (Left) | OFF or ON | OFF: Mirror adjust switch not pushed left ON: Mirror adjust switch pushed left | Check with the mirror select switch L or R selected |
| Mirror Position SW (Up) | Mirror adjust switch signal (Up) | OFF or ON | OFF: Mirror adjust switch not pushed up ON: Mirror adjust switch pushed up | Check with the mirror select switch L or R selected |
| Mirror Position SW (Dwn) | Mirror adjust switch signal (Down) | OFF or ON | OFF: Mirror adjust switch not pushed down ON: Mirror adjust switch pushed down | Check with the mirror select switch L or R selected |
| Tester Display |
|---|
| Mirror Selection SW (R) |
| Mirror Selection SW (L) |
| Mirror Position SW (R) |
| Mirror Position SW (L) |
| Mirror Position SW (Up) |
| Mirror Position SW (Dwn) |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| OK | .gif) | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
|
.gif)
| 2. | INSPECT OUTER MIRROR SWITCH ASSEMBLY |
(a) Remove the outer mirror switch assembly.
Click here
(b) Inspect the outer mirror switch assembly.
Click here
| NG | | REPLACE OUTER MIRROR SWITCH ASSEMBLY |
|
| 3. | CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the G38 main body ECU (multiplex network body ECU).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J16-12 (E) - G38-9 (MIRE) | Always | Below 1 Ω |
| J16-13 (M+) - G38-7 (MIRB) | Always | Below 1 Ω |
| J16-14 (MSW) - G38-8 (MIRS) | Always | Below 1 Ω |
| J16-12 (E) or G38-9 (MIRE) - Body ground | Always | 10 kΩ or higher |
| J16-13 (M+) or G38-7 (MIRB) - Body ground | Always | 10 kΩ or higher |
| J16-14 (MSW) or G38-8 (MIRS) - Body ground | Always | 10 kΩ or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Mirror Heater does not Operate with Rear Defogger Switch
DESCRIPTION When the mirror heater switch (rear window defogger switch) is operated, the mirror heater signal is sent to the air conditioning amplifier assembly and then to each outer mirror control E
Power Retractable Mirrors do not Operate with Power Retract Mirror Switch
DESCRIPTION The outer mirror switch assembly sends the retractable outer mirror switch signal to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then sen
AUTO Power Retract Mirrors do not operate
DESCRIPTION The outer mirror switch assembly sends the retractable outer mirror switch signal to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) sends th
SEE MORE:
Vehicle Speed Sensor (C1A45)
DESCRIPTION The blind spot monitor sensor receives vehicle speed signals from the skid control ECU via CAN communication. Blind Spot Monitor Master DTC No. Detection Item DTC Detection Condition Trouble Area C1A45 Vehicle Speed Sensor A fail flag is transmitted from the skid control
Hybrid/EV Battery Energy Control Module Unexpected Operation (P0A1F94)
DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU (main CPU) monitors the battery ECU assembly. The cause of this malfunction may be the following: Battery ECU assembly internal malfunction
Battery ECU assembly malfunction
DESCRIPTION The hybrid vehicle control ECU (main CPU)
