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 |
Back-up Power Source Circuit
DESCRIPTION
The back-up power source circuit for the air conditioning amplifier assembly
is shown below. Power is supplied even after the ignition switch is turned off and
is used for diagnostic trouble code memory, etc.
WIRING DIAGRAM
CAUTION / NOTIC ...
System Description
SYSTEM DESCRIPTION
1. ENGINE IMMOBILISER SYSTEM DESCRIPTION
(a) The engine immobiliser system is designed to prevent the vehicle from being
stolen. This system uses a transponder key ECU assembly that stores the key codes
of authorized ignition keys. If ...