Toyota CH-R Service Manual: AUTO Power Retract Mirrors do not operate
DESCRIPTION
The outer mirror switch assembly sends a mirror auto retract/return signal to the main body ECU (multiplex network body ECU) when the retractable outer mirror switch on the outer mirror switch assembly is in the AUTO position. The main body ECU (multiplex network body ECU) retracts or returns the outer rear view mirror assemblies based on the lock/unlock signal of each door while the ignition switch is off.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
- If the main body ECU (multiplex network body ECU) is replaced, refer
to Registration.*1
Click here
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- *1: w/ Smart Key System
PROCEDURE
|
1. |
CHECK POWER RETRACT MIRROR FUNCTION |
(a) Check the power retract mirror function.
Click here
OK:
Power retract mirror function operates normally.
| NG | .gif) |
GO TO OTHER DIAGNOSIS PROCEDURE (Power Retractable Mirrors do not Operate with Power Retract Mirror Switch) |
|
.gif)
|
2. |
CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check the power door lock control system.
Click here
OK:
Power door lock control system is normal.
| NG | |
GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
|
3. |
CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) w/ Smart Key System
(1) Check the wireless door lock control system.
Click here
(b) w/o Smart Key System
(1) Check the wireless door lock control system.
Click here
OK:
Wireless door lock control system is normal.
|
Result |
Proceed to |
|---|---|
|
OK (w/ Smart Key System) |
A |
|
OK (w/o Smart Key System) |
B |
|
NG (w/ Smart Key System) |
C |
|
NG (w/o Smart Key System) |
D |
| B | |
GO TO STEP 5 |
| C | |
GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
| D | |
GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
|
4. |
CHECK SMART KEY SYSTEM (for Entry Function) |
(a) Check the smart key system (for Entry Function).
Click here
OK:
Smart key system (for Entry Function) is normal.
| NG | |
GO TO SMART KEY SYSTEM (for Entry Function) |
|
|
5. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(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 |
|---|---|---|---|---|
|
Auto Mirror SW |
Retractable outer mirror switch signal |
OFF or ON |
OFF: Mirror retract switch not in auto position ON: Mirror retract switch in auto position |
- |
|
Tester Display |
|---|
|
Auto Mirror SW |
OK:
On the Techstream screen, ON or OFF is displayed accordingly.
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
|
6. |
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 |
|
|
7. |
CHECK HARNESS AND CONNECTOR (OUTER MIRROR SWITCH ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the J10 outer mirror switch assembly.
(b) Disconnect the F16 main body ECU (multiplex network body ECU).
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
J10-4 (MAT) - F16-15 (RTR) |
Always |
Below 1 Ω |
|
J10-4 (MAT) or F16-15 (RTR) - Body ground |
Always |
10 kΩ or higher |
| OK | |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Power Retractable Mirrors do not Operate with Power Retract Mirror Switch
DESCRIPTION
The outer mirror switch assembly sends a mirror retract/return signal to the
main body ECU (multiplex network body ECU) when the retractable outer mirror switch
on the outer mirror sw ...
Relay
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT MIRROR CONTROL RELAY
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table belo ...
Other materials:
Toyota CH-R Service Manual > Immobiliser System(w/o Smart Key System): Dtc Check / Clear
DTC CHECK / CLEAR
CHECK FOR TRANSPONDER KEY ECU ASSEMBLY DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Immobiliser / Trouble Codes.
Body Electrical > Immobiliser > Trouble Codes ...
Toyota CH-R Service Manual > Blind Spot Monitor System: Software Incompatibility with Body Control Module "B" (U1331)
DESCRIPTION
This DTC is stored when the destination information of the main body ECU (multiplex
network body ECU) does not match that of the blind spot monitor sensors.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
U1331
...
Toyota C-HR (AX20) 2023-2026 Owner's Manual
Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
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