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 ECU assembly via CAN communication.
Based on this signal, the outer mirror control ECU assemblies operate
the mirror heaters. WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- The power mirror control system (for Gasoline Model with Memory) uses
the CAN communication system. Inspect the communication functions by
following How to Proceed with Troubleshooting. Troubleshoot the power
mirror control system (for Gasoline Model with Memory) after confirming
that the communication systems are functioning properly.
Click here 
- If the battery voltage is low, the mirror heater function may not operate.
PROCEDURE |
1. | CHECK WINDOW DEFOGGER SYSTEM |
(a) Check window defogger system operation. Click here
OK: Window defogger system is normal.
| NG |
 | GO TO WINDOW DEFOGGER SYSTEM |
|
OK |
 | |
| 2. |
PERFORM ACTIVE TEST 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 / Mirror L or Mirror R / Active Test.
(e) Perform an Active Test according to the display on the Techstream. Body Electrical > Mirror L > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Mirror Heater | Mirror heater operation |
OFF or ON |
- Operate with engine switch on (IG) and the vehicle stopped.
- This test turns the mirror heater on or off.
- Mirror heater operation can be confirmed by touch.
| Body Electrical > Mirror L > Active Test
|
Tester Display | | Mirror Heater | Body Electrical > Mirror R > Active Test
|
Tester Display | Measurement Item |
Control Range | Diagnostic Note | |
Mirror Heater | Mirror heater operation |
OFF or ON |
- Operate with engine switch on (IG) and the vehicle stopped.
- This test turns the mirror heater on or off.
- Mirror heater operation can be confirmed by touch.
| Body Electrical > Mirror R > Active Test
|
Tester Display | | Mirror Heater |
|
Result | Proceed to | |
Mirror heater operation on both mirrors is normal |
A | | Mirror heater operation on driver door mirror is not normal |
B | | Mirror heater operation on front passenger door mirror is not normal |
C |
| A |
| REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
| C |
| GO TO STEP 6 |
|
B | |
| |
| 3. |
CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY LH - OUTER REAR VIEW MIRROR ASSEMBLY LH) |
(a) Disconnect the I22 outer mirror control ECU assembly LH connector.
(b) Disconnect the I29*1 or I28*2 outer rear view mirror assembly LH connector.
- *1: w/ Panoramic View Monitor System
- *2: w/o Panoramic View Monitor System
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: w/ Panoramic View Monitor System |
Tester Connection | Condition |
Specified Condition | |
I22-4 (HTR+) - I29-5 (+) |
Always | Below 1 Ω | |
I22-12 (RTN) - I29-6 (-) |
Always | Below 1 Ω | |
I22-4 (HTR+) or I29-5 (+) - Body ground |
Always | 10 kΩ or higher | |
I22-12 (RTN) or I29-6 (-) - Body ground |
Always | 10 kΩ or higher | w/o Panoramic View Monitor System |
Tester Connection | Condition |
Specified Condition | |
I22-4 (HTR+) - I28-5 (+) |
Always | Below 1 Ω | |
I22-12 (RTN) - I28-6 (-) |
Always | Below 1 Ω | |
I22-4 (HTR+) or I28-5 (+) - Body ground |
Always | 10 kΩ or higher | |
I22-12 (RTN) or I28-6 (-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 4. |
INSPECT OUTER MIRROR LH | (a) Remove the outer mirror LH.
Click here (b) Inspect the outer mirror LH.
Click here
| NG |
| REPLACE OUTER MIRROR LH |
|
OK | |
| |
| 5. |
INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH (MIRROR HEATER) |
(a) Remove the outer rear view mirror assembly LH. Click here
(b) Inspect the outer rear view mirror assembly LH (mirror heater).
Click here
| OK |
| REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH |
| NG |
| REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH |
| 6. |
CHECK HARNESS AND CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY RH - OUTER REAR VIEW MIRROR ASSEMBLY RH) |
(a) Disconnect the I6 outer mirror control ECU assembly RH connector. (b) Disconnect the I13*1 or I12*2 outer rear view mirror assembly RH connector.
- *1: w/ Panoramic View Monitor System
- *2: w/o Panoramic View Monitor System
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: w/ Panoramic View Monitor System |
Tester Connection | Condition |
Specified Condition | |
I6-4 (HTR+) - I13-5 (+) |
Always | Below 1 Ω | |
I6-12 (RTN) - I13-6 (-) |
Always | Below 1 Ω | |
I6-4 (HTR+) or I13-5 (+) - Body ground |
Always | 10 kΩ or higher | |
I6-12 (RTN) or I13-6 (-) - Body ground |
Always | 10 kΩ or higher | w/o Panoramic View Monitor System |
Tester Connection | Condition |
Specified Condition | |
I6-4 (HTR+) - I12-5 (+) |
Always | Below 1 Ω | |
I6-12 (RTN) - I12-6 (-) |
Always | Below 1 Ω | |
I6-4 (HTR+) or I12-5 (+) - Body ground |
Always | 10 kΩ or higher | |
I6-12 (RTN) or I12-6 (-) - Body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 7. |
INSPECT OUTER MIRROR RH | (a) Remove the outer mirror RH.
Click here (b) Inspect the outer mirror RH.
Click here
| NG |
| REPLACE OUTER MIRROR RH |
|
OK | |
| |
| 8. |
INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH (MIRROR HEATER) |
(a) Remove the outer rear view mirror assembly RH. Click here
(b) Inspect the outer rear view mirror assembly RH (mirror heater).
Click here
| OK |
| REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH |
| NG |
| REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH | | 
