DESCRIPTION
When the front power seat switch LH does not receive a sensor signal despite forward or backward movement of the seatback by power seat motor operation, this DTC is stored.
DTC Code |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2651 |
The forward and backward lock detection position of the sensor is the same. |
|
WIRING DIAGRAM
PROCEDURE
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (POWER SEAT MOTOR FUNCTION) |
(a) Select the Active Test, use the Techstream to generate a control command,
and then check the power seat motor function (See page
).
Tester Display |
Test Part |
Control Ranger |
Diagnostic Note |
---|---|---|---|
Seat Reclining |
Seat reclining operation |
Front / OFF / Rear |
- |
OK:
Motor operates normally.
NG | ![]() |
GO TO STEP 5 |
|
2. |
CHECK FRONT POWER SEAT SWITCH LH (RECLINING MOTOR CIRCUIT) |
(a) Disconnect the d5 reclining motor connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
d5-2 (O/P) - d5-3 (GND) |
Reclining switch on |
4.8 to 5.1 V |
*a |
Front view of wire harness connector (to Separate Type Front Seatback Spring Assembly LH [Reclining Motor]) |
NG | ![]() |
GO TO STEP 4 |
|
3. |
CHECK SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR) |
(a) Connect the d5 reclining motor connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
d5-2 (O/P) - Body ground |
Reclining switch on |
4.5 to 4.8 V |
*a |
Component with harness connected (Separate Type Front Seatback Spring Assembly LH [Reclining Motor]) |
OK | ![]() |
REPLACE FRONT POWER SEAT SWITCH LH |
NG | ![]() |
REPLACE SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR) |
4. |
CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH - RECLINING MOTOR) |
(a) Disconnect the b19 front power seat switch LH connector.
(b) Disconnect the d5 reclining motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
b19-11 (SSRR) - d5-2 (O/P) |
Always |
Below 1 Ω |
b19-1 (SGND) - d5-3 (GND) |
Always |
Below 1 Ω |
b19-11 (SSRR) - Body ground |
Always |
10 kΩ or higher |
b19-1 (SGND) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE FRONT POWER SEAT SWITCH LH |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
5. |
INSPECT SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR) |
(a) Remove the front seatback board sub-assembly (See page
|
|
(b) Disconnect the b5 reclining motor connector.
(c) Check if the seatback moves smoothly when the battery is connected to the reclining motor connector terminals.
OK:
Measurement Condition |
Operational Direction |
---|---|
Battery positive (+) → 1 (FWD) Battery negative (-) → 4 (BACK) |
Seatback moves forward |
Battery positive (+) → 4 (BACK) Battery negative (-) → 1 (FWD) |
Seatback moves backward |
*a |
Component without harness connected (Separate Type Front Seatback Spring Assembly LH [Reclining Motor]) |
NG | ![]() |
REPLACE SEPARATE TYPE FRONT SEATBACK SPRING ASSEMBLY LH (RECLINING MOTOR) |
|
6. |
CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH LH - RECLINING MOTOR) |
(a) Disconnect the b18 front power seat switch LH connector.
(b) Disconnect the d5 reclining motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
b18-9 (RCL+) - d5-1 (FWD) |
Always |
Below 1 Ω |
b18-11 (RCL-) - d5-4 (BACK) |
Always |
Below 1 Ω |
b18-9 (RCL+) - Body ground |
Always |
10 kΩ or higher |
b18-11 (RCL-) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE FRONT POWER SEAT SWITCH LH |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC (CHECK USING TECHSTREAM)
(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 / Navigation System / Trouble
Codes.
(e) Chec ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
When installing the rear spoiler protector, heat the rear spoiler surface using
a heat light.
Standard:
Item
Temperature
Rear Spoiler
20 to 30°C (68 to 86°F)
...