The air conditioning amplifier assembly detects the condition of the window defogger switch (mirror heater switch) in the air conditioning control assembly via LIN communication.
When the window defogger switch (mirror heater switch) is on, the air conditioning amplifier assembly sends the mirror heater drive command signal to the main body ECU (multiplex network body ECU) via CAN communication.
The main body ECU (multiplex network body ECU) sends the received mirror heater drive command signal to the power distribution box assembly via CXPI communication.
When the mirror heater drive command signal is received, the power distribution box assembly operates the mirror heater.
for SFTM Made:
for GTMC Made:
If the mirror heater is operated when the auxiliary battery voltage is low, due to the electrical load limit control that gives voltage supply priority to the power steering system, the mirror heater may not operate. In this case, check the vehicle control history of the power steering system and check that "Battery Voltage Drop: X208F" is not stored before proceeding with troubleshooting.
With the negative (-) auxiliary battery terminal connected, disconnect/do not connect the connector of the power distribution box assembly.
When replacing the power distribution box assembly, the system may not operate normally if the same part number is not used.
The power mirror control system uses the CAN communication system, LIN communication system and CXPI communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system after confirming that the communication system is functioning properly.
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Mirror Heater Input Signal | Mirror heater drive signal (Input) | OFF/ON | OFF: Ignition switch ON, window defogger switch (mirror heater switch) off
ON: Ignition switch ON, window defogger switch (mirror heater switch) on |
- |
| Tester Display |
|---|
| Mirror Heater Input Signal |
On the GTS screen, ON or OFF is displayed accordingly.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| Both mirror heater does not operate | A |
| LH side mirror heater does not operate | B |
| RH side mirror heater does not operate | C |
A
B
C
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for GTMC Made | A |
| for SFTM Made | B |
A
B
Disconnect the I13*1 or I14*2 outer rear view mirror assembly RH connector.
*1: w/ Panoramic View Monitor System
*2: w/o Panoramic View Monitor System
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I13-9 (+) - 6B-2 | Always | Below 1 Ω |
| I13-9 (+) or 6B-2 - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I14-2 (+) - 6B-2 | Always | Below 1 Ω |
| I14-2 (+) or 6B-2 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Disconnect the I13*1 or I17*2 outer rear view mirror assembly RH connector.
*1: w/ Blind Spot Monitor System
*2: w/o Blind Spot Monitor System
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I13-9 (+) - 6B-2 | Always | Below 1 Ω |
| I13-9 (+) or 6B-2 - Body ground | Always | 10 kΩ or higher |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I17-8 (+) - 6B-2 | Always | Below 1 Ω |
| I17-8 (+) or 6B-2 - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for GTMC Made | A |
| for SFTM Made | B |
A
B
w/ Panoramic View Monitor System:
Disconnect the J13 outer rear view mirror assembly LH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J13-9 (+) - 6B-2 | Always | Below 1 Ω |
| J13-10 (-) - Body Ground | Always | Below 1 Ω |
w/o Panoramic View Monitor System:
Disconnect the J14 outer rear view mirror assembly LH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J14-2 (+) - 6B-2 | Always | Below 1 Ω |
| J14-8 (-) - Body Ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
w/ Binde Spot Monitor System:
Disconnect the J13 outer rear view mirror assembly LH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J13-9 (+) - 6B-2 | Always | Below 1 Ω |
| J13-10 (-) - Body Ground | Always | Below 1 Ω |
w/o Blind Spot Monitor System:
Disconnect the J17 outer rear view mirror assembly LH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J17-8 (+) - 6B-2 | Always | Below 1 Ω |
| J17-9 (-) - Body Ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check vehicle condition.
| Result | Proceed to |
|---|---|
| for GTMC Made | A |
| for SFTM Made | B |
A
B
w/ Panoramic View Monitor System:
Disconnect the I13 outer rear view mirror assembly RH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I13-9 (+) - 6B-2 | Always | Below 1 Ω |
| I13-10 (-) - Body Ground | Always | Below 1 Ω |
w/o Panoramic View Monitor System:
Disconnect the I14 outer rear view mirror assembly RH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I14-2 (+) - 6B-2 | Always | Below 1 Ω |
| I14-8 (-) - Body Ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG
w/ Blind Spot Monitor System:
Disconnect the I13 outer rear view mirror assembly RH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I13-9 (+) - 6B-2 | Always | Below 1 Ω |
| I13-10 (-) - Body Ground | Always | Below 1 Ω |
w/o Blind Spot Monitor System:
Disconnect the I17 outer rear view mirror assembly RH connector.
Disconnect the 6B power distribution box assembly connector.
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I17-8 (+) - 6B-2 | Always | Below 1 Ω |
| I17-9 (-) - Body Ground | Always | Below 1 Ω |
| Proceed to |
|---|
| OK |
| NG |
OK
NG
Check the air conditioning system.
for HV Model:
for Gasoline Model:
Both the window defogger system operation signal and air conditioning system operation signal are transmitted to the air conditioning amplifier assembly via the same communication line.
The air conditioning system operates normally.
| Proceed to |
|---|
| OK |
| NG |
OK
NG
for HV Model:
for Gasoline Model:
Check that the indicator illuminates when the window defogger switch (mirror heater switch) is on.
Defogger indicator illuminates.
| Proceed to |
|---|
| OK |
| NG |
OK
NG