DESCRIPTION
When the position control ECU and switch assembly does not receive a sensor signal despite forward or backward movement of seat by power seat motor operation, this DTC is output.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2650 |
The forward and backward lock detection position of the sensor is the same. |
|
WIRING DIAGRAM
PROCEDURE
1. |
CHECK FOR 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 / Driver Seat / Trouble Codes.
(e) Clear the DTC (See page ).
(f) Recheck for DTC B2650.
Result |
Proceed to |
---|---|
DTC B2650 is output |
A |
DTC B2650 is not output |
B |
B | ![]() |
USE SIMULATION METHOD TO CHECK |
|
2. |
PERFORM ACTIVE TEST USING TECHSTREAM |
(a) Enter the following menus: Body Electrical / Driver Seat / Active Test.
(b) Perform the Active Test according to the display on the Techstream.
Driver Seat
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
---|---|---|---|
Seat Slide Operation |
Seat sliding operation |
OFF/Front/Rear |
- |
OK:
Motor operates normally.
NG | ![]() |
GO TO STEP 5 |
|
3. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR) |
(a) Disconnect the T11 the position control ECU and switch assembly connector.
(b) Disconnect the T12 the slide motor (front seat frame with adjuster assembly LH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T11-3 (PVCC) - T12-5 (VCC) |
Always |
Below 1 Ω |
T11-2 (SSRS) - T12-2 (O/P) |
Always |
Below 1 Ω |
T11-1 (SGND) - T12-6 (GND) |
Always |
Below 1 Ω |
T11-3 (PVCC) - Body ground |
Always |
10 kΩ or higher |
T11-2 (SSRS) - Body ground |
Always |
10 kΩ or higher |
T11-1 (SGND) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK POSITION CONTROL ECU AND SWITCH ASSEMBLY (SLIDE MOTOR CIRCUIT) |
(a) Reconnect the T11 the position control ECU and switch assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T12-5 (VCC) - T12-6 (GND) |
Slide switch on |
5.5 to 6.5 V |
OK | ![]() |
REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH |
NG | ![]() |
REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY |
5. |
INSPECT FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH |
(a) Disconnect the T12 the slide motor (front seat frame with adjuster assembly LH) connector.
(b) Check if the seat frame moves smoothly when the battery is connected to the slide motor connector terminals. OK:
|
|
NG | ![]() |
REPLACE FRONT SEAT FRAME WITH ADJUSTER ASSEMBLY LH |
|
6. |
CHECK HARNESS AND CONNECTOR (POSITION CONTROL ECU AND SWITCH ASSEMBLY - SLIDE MOTOR) |
(a) Disconnect the T10 the position control ECU and switch assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T10-2 (SLD+) - T12-3 (FWD) |
Always |
Below 1 Ω |
T10-4 (SLD-) - T12-4 (BACK) |
Always |
Below 1 Ω |
T10-2 (SLD+) - Body ground |
Always |
10 kΩ or higher |
T10-4 (SLD-) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE POSITION CONTROL ECU AND SWITCH ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
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