| Last Modified: 05-08-2025 | 6.11:8.1.0 | Doc ID: RM100000001MUOB |
| Model Year Start: 2020 | Model: RAV4 | Prod Date Range: [10/2019 - ] |
| Title: SLIDING ROOF / CONVERTIBLE: PANORAMIC MOON ROOF SYSTEM: B2348; Position Initialization Incomplete (Fr Shade); 2020 - 2025 MY RAV4 RAV4 HV [10/2019 - ] | ||
|
DTC |
B2348 |
Position Initialization Incomplete (Fr Shade) |
DESCRIPTION
This DTC is stored when the roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) has not been initialized.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
B2348 |
Position Initialization Incomplete (Fr Shade) |
Roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) has not been initialized. |
|
WIRING DIAGRAM
for TMC Made:
for TMMC Made:
CAUTION / NOTICE / HINT
NOTICE:
-
When the roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) is removed and reinstalled or replaced, the roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) must be initialized.
Click here
![2019 - 2025 MY RAV4 RAV4 HV [11/2018 - ]; SLIDING ROOF / CONVERTIBLE: PANORAMIC MOON ROOF SYSTEM: INITIALIZATION](/t3Portal/stylegraphics/info.gif)
-
The panoramic moon roof system uses the CAN and LIN communication system. First, confirm that there are no malfunctions in the CAN and LIN communication system. Refer to How to Proceed with Troubleshooting.
Click here
HINT:
When DTC B2342 and B2348 are output simultaneously, perform troubleshooting for DTC B2342 first.
PROCEDURE
|
1. |
INITIALIZE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE]) |
(a) Check that the roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) can be initialized.
Click here
OK:
Roof sunshade ECU (sliding roof drive gear assembly [roof sunshade]) can be initialized.
| NG |
|
|
|
2. |
CHECK ROOF SUNSHADE OPERATION |
(a) Check the roof sunshade auto operation function.
Click here
OK:
Auto operation function operates normally.
| NG |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE])
|
|
|
3. |
CHECK DTC OUTPUT |
(a) Clear the DTCs.
Click here
Body Electrical > Sliding Roof > Clear DTCs
(b) Check for DTCs.
Click here
Body Electrical > Sliding Roof > Trouble Codes
OK:
DTC B2348 is not output.
| OK |
|
END (MALFUNCTION DUE TO INITIALIZATION FAILURE) |
| NG |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE])
|
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (Front Sliding Sunshade) |
(a) Perform the Active Test according to the display on the Techstream.
Click here
Body Electrical > Sliding Roof > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Front Sliding Sunshade |
Operate sunshade motor |
OFF / Open / Close |
- |
Body Electrical > Sliding Roof > Active Test
|
Tester Display |
|---|
|
Front Sliding Sunshade |
OK:
Roof sunshade is operated using the Techstream.
| NG |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE])
|
|
|
5. |
READ VALUE USING TECHSTREAM (Shade Close Switch, Shade Open Switch) |
(a) Using the Techstream, read the Data List.
Click here
Body Electrical > Sliding Roof > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Shade Close Switch |
Sunshade close switch signal |
ON or OFF |
OFF: Roof sunshade switch (close) not pressed ON: Roof sunshade switch (open) pressed |
- |
|
Shade Open Switch |
Roof sunshade open switch signal |
ON or OFF |
OFF: Roof sunshade switch (open) not pressed ON: Roof sunshade (open) switch pressed |
- |
Body Electrical > Sliding Roof > Data List
|
Tester Display |
|---|
|
Shade Close Switch |
|
Shade Open Switch |
OK:
The Techstream display changes according to switch operation as shown in the table.
| OK |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE])
|
|
|
6. |
INSPECT MAP LIGHT SUB-ASSEMBLY |
(a) Remove the map light sub-assembly.
Click here
(b) Inspect the map light sub-assembly.
Click here
Click here
| NG |
|
|
|
7. |
CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU [SLIDING ROOF DRIVE GEAR ASSEMBLY (SLIDING ROOF)] - MAP LIGHT SUB-ASSEMBLY AND BODY GROUND) |
(a) Disconnect the P20*1 or P14*2 map light sub-assembly connector.
-
*1: for TMC made
*2: for TMMC made
(b) Disconnect the P4 sliding roof ECU (sliding roof drive gear assembly [sliding roof]) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P4-9 (DWN) - P20-18 (DOWN) |
Always |
Below 1 Ω |
|
P4-5 (UP) - P20-19 (UP) |
Always |
Below 1 Ω |
|
P4-2 (E) - Body ground |
Always |
Below 1 Ω |
|
P20-13 (GND) - Body ground |
Always |
Below 1 Ω |
|
P4-9 (DWN) or P20-18 (DOWN) - Body ground |
Always |
10 kΩ or higher |
|
P4-5 (UP) or P20-19 (UP) - Body ground |
Always |
10 kΩ or higher |
for TMMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
P4-9 (DWN) - P14-15 (DOWN) |
Always |
Below 1 Ω |
|
P4-5 (UP) - P14-16 (UP) |
Always |
Below 1 Ω |
|
P4-2 (E) - Body ground |
Always |
Below 1 Ω |
|
P14-20 (GND) - Body ground |
Always |
Below 1 Ω |
|
P4-9 (DWN) or P14-15 (DOWN) - Body ground |
Always |
10 kΩ or higher |
|
P4-5 (UP) or P14-16 (UP) - Body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE ROOF SUNSHADE ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY [ROOF SUNSHADE])
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|