This DTC is stored when the roof sunshade ECU (sliding roof drive gear sub-assembly) detects that the roof sunshade switch (map light assembly) is stuck for 30 seconds or more.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
|---|---|---|---|---|
| B234C | Switch Failure (Rr Shade) | Roof sunshade ECU (sliding roof drive gear sub-assembly) detects roof sunshade switch (map light assembly) is stuck for 30 seconds or more | ·
Roof sunshade ECU (Sliding roof drive gear sub-assembly) ·
Roof sunshade switch (Map light assembly) ·
Wire harness or connector |
Sliding Roof |
The panoramic fixed moonroof with one-touch frosted glass control system uses the LIN communication system. First, confirm that there are no malfunctions in the LIN communication system. Refer to How to Proceed with Troubleshooting.
If the roof sunshade ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, the roof sunshade ECU (sliding roof drive gear sub-assembly) must be initialized.
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Open Switch Failure(Past) | Open switch failure signal (Past) | OFF or ON | OFF: No roof sunshade open switch failure signal (Past) | - |
| Tester Display |
|---|
| Open Switch Failure(Past) |
| Result | Proceed to |
|---|---|
| The value of Open Switch Failure(Past) is OFF | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Open Switch Failure(Past) | Open switch failure signal (Past) | OFF or ON | ON: Roof sunshade open switch failure signal (Past) | - |
| Tester Display |
|---|
| Open Switch Failure(Past) |
| Result | Proceed to |
|---|---|
| The value of Open Switch Failure(Past) is ON | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Close Switch Failure(Past) | Close switch failure signal (Past) | OFF or ON | OFF: No roof sunshade close switch failure signal (Past) | - |
| Tester Display |
|---|
| Close Switch Failure(Past) |
| Result | Proceed to |
|---|---|
| The value of Close Switch Failure(Past) is OFF | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Close Switch Failure(Past) | Close switch failure signal (Past) | OFF or ON | ON: Roof sunshade close switch failure signal (Past) | - |
| Tester Display |
|---|
| Close Switch Failure(Past) |
| Result | Proceed to |
|---|---|
| The value of Close Switch Failure(Past) is ON | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Open Switch Failure(Current) | Open switch failure signal (Current) | OFF or ON | OFF: No roof sunshade open switch failure signal (Current) | - |
| Tester Display |
|---|
| Open Switch Failure(Current) |
| Result | Proceed to |
|---|---|
| The value of Open Switch Failure(Current) is OFF | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Open Switch Failure(Current) | Open switch failure signal (Current) | OFF or ON | ON: Roof sunshade open switch failure signal (Current) | - |
| Tester Display |
|---|
| Open Switch Failure(Current) |
| Result | Proceed to |
|---|---|
| The value of Open Switch Failure(Current) is ON | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Close Switch Failure(Current) | Close switch failure signal (Current) | OFF or ON | OFF: No roof sunshade close switch failure signal (Current) | - |
| Tester Display |
|---|
| Close Switch Failure(Current) |
| Result | Proceed to |
|---|---|
| The value of Close Switch Failure(Current) is OFF | A |
| None of the above conditions are met | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| Close Switch Failure(Current) | Close switch failure signal (Current) | OFF or ON | ON: Roof sunshade close switch failure signal (Current) | - |
| Tester Display |
|---|
| Close Switch Failure(Current) |
| Result | Proceed to |
|---|---|
| The value of Close Switch Failure(Current) is ON | A |
| None of the above conditions are met | B |
A
B
Pre-procedure1
Disconnect the Q2 roof sunshade ECU (sliding roof drive gear sub-assembly) connector.
Disconnect the Q9 roof sunshade switch (map light assembly) connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
Click Location & Routing(Q2,Q9)Location & Routingewd_type=routing;type=c,c;code=Q2,Q9 Click Connector(Q2)Body>Roof Wire>Roof Sunshade Control ECU (Sliding Roof Drive Gear Assembly)ewd_type=component;type=c;code=Q2;pinno=6,1 Click Connector(Q9)Body>Roof Wire>Map Light Assemblyewd_type=component;type=c;code=Q9;pinno=12,35 |
||
| Q2-6 (OPN) or Q9-12 (OPN) - Body ground | Always | 10 kΩ or higher |
| Q2-1 (CLS) or Q9-35 (CLS) - Body ground | Always | 10 kΩ or higher |
| Proceed to |
|---|
| OK |
| NG |
Post-procedure1
None
OK
NG
| Proceed to |
|---|
| OK |
| NG |
OK
NG