Nissan Pathfinder: Automatic Drive Positioner - Ecu Diagnosis Information
Nissan Pathfinder (R53) 2022-2025 Service Manual / Body Interior :: Automatic Drive Positioner / Ecu Diagnosis Information
Driver Seat Control Unit Nissan Pathfinder 2025
Values on the Diagnosis Tool
NOTE:
The following table includes information (items) inapplicable to this Nissan Pathfinder vehicle: For information (items) applicable to this vehicle, refer to CONSULT display items.
| Monitor Item | Condition | Value/Status | |
|---|---|---|---|
| Memory switch 1 | Memory switch-1 | Press | On |
| Release | Off | ||
| Memory switch 2 | Memory switch-2 | Press | On |
| Release | Off | ||
| Set switch | Set switch | Press | On |
| Release | Off | ||
| Reclining switch (Forward) | Reclining switch | Operate (forward) | On |
| Release | Off | ||
| Reclining switch (Backward) | Reclining switch | Operate (backward) | On |
| Release | Off | ||
| Thigh support switch (Up) | Thigh support switch | Operate (upward) | On |
| Release | Off | ||
| Thigh support switch (Down) | Thigh support switch | Operate (downward) | On |
| Release | Off | ||
| Sliding switch (Forward) | Sliding switch | Operate (forward) | On |
| Release | Off | ||
| Sliding switch (Backward) | Sliding switch | Operate (backward) | On |
| Release | Off | ||
| Lifting switch (Up) | Lifting switch | Operate (upward) | On |
| Release | Off | ||
| Lifting switch (Down) | Lifting switch | Operate (downward) | On |
| Release | Off | ||
| Lumbar support switch (Up) | Lumbar support switch | Operate (upward) | On |
| Release | Off | ||
| Lumbar support switch (Down) | Lumbar support switch | Operate (downward) | On |
| Release | Off | ||
| Lumbar support switch (Fwd) | Lumbar support switch | Operate (forward) | On |
| Release | Off | ||
| Lumbar support switch (Bwd) | Lumbar support switch | Operate (backward) | On |
| Release | Off | ||
| Massage switch | Massage switch | Press | On |
| Release | Off | ||
| Lifting motor position | Seat lifting | Operate (upward) | Change (increase) |
| Operate (downward) | Change (decrease) | ||
| Other than the above | No change | ||
| Reclining motor position | Seat reclining | Operate (forward) | Change (increase) |
| Operate (backward) | Change (decrease) | ||
| Other than the above | No change | ||
| Thigh support motor position | Thigh support | Operate (upward) | Change (increase) |
| Operate (downward) | Change (decrease) | ||
| Other than the above | No change | ||
| Sliding motor position | Seat sliding | Operate (forward) | Change (increase) |
| Operate (backward) | Change (decrease) | ||
| Other than the above | No change | ||
| Lumbar sprt (Fwd/Bwd) mot pos | Lumbar sliding | Operate (forward) | Change (increase) |
| Operate (backward) | Change (decrease) | ||
| Other than the above | No change | ||
| Lumbar sprt (Up/Down) mot pos | Lumbar lifting | Operate (upward) | Change (increase) |
| Operate (downward) | Change (decrease) | ||
| Other than the above | No change | ||
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
|
Terminal No. (Wire color) | Description | Condition |
Value (Approx.) | |||
|---|---|---|---|---|---|---|
| + | - | Signal name | Input/output | |||
|
11 (SB) |
Ground | Lumbar support motor X (upward) | Output | Lumbar support | Operate (upward) | Battery voltage |
| Other than the above | 0 V | |||||
|
21 (B) |
Ground | Lumbar support motor X (downward) | Output | Lumbar support | Operate (downward) | Battery voltage |
| Other than the above | 0 V | |||||
|
31 (GR) |
Ground | Lumbar support motor Y (upward) | Output | Lumbar support | Operate (upward) | Battery voltage |
| Other than the above | 0 V | |||||
|
41 (R) |
Ground | Lumbar support motor y (downward) | Output | Lumbar support | Operate (downward) | Battery voltage |
| Other than the above | 0 V | |||||
|
7 (P) |
Ground | Tilt switch | Input | Tilt switch | Press | 0 V |
| Release | Battery voltage* | |||||
|
9 (R) |
Ground | Memory switch-1 | Input | Memory switch-1 | Press | 0 V |
| Release | Battery voltage* | |||||
|
10 (B) |
Ground | Memory switch-2 | Input | Memory switch-2 | Press | 0 V |
| Release | Battery voltage* | |||||
|
11 (BG) |
Ground | Reclining switch | Input | Reclining switch | Operate (forward) | 1.524 – 3.268 V |
| Operate (backward) | 0.647 – 1.522 V | |||||
| Release | 3.269 – 4.799 V* | |||||
|
12 (SB) |
Ground | Set switch | Input | Set switch | Press | 0 V |
| Release | Battery voltage* | |||||
|
131 (BR) |
Ground | Lumbar support sensor ground | — | Always | 0 V | |
|
15 (G) |
Ground | Tilt sensor | Input | Tilt motor | Operate |
|
| Other than the above | 5 V* | |||||
|
16 (P) |
Ground | Lifting sensor | Input | Seat lifting | Operate |
|
| Other than the above | 5 V* | |||||
|
171 (V) |
Ground | Lumbar support Y sensor | Input | Lumbar support Y lifting | Operate |
|
| Other than the above | 5 V* | |||||
|
18 (LG) |
Ground | Memory indicator-2 | Output | Memory indicator-2 | Illuminate | 0 V |
| Other than the above | Battery voltage | |||||
|
19 (R) |
— | CAN-Low | — | — | — | |
|
20 (L) |
— | CAN-High | — | — | — | |
|
281 (W) |
Ground | Lumbar support switch | Input | Lumbar support switch | Press | 0 V |
| Release | Battery voltage* | |||||
|
31 (G) |
Ground | Sliding / lifting switch | Input | Sliding switch | Operate (forward) | 3.065 – 3.962 V |
| Operate (backward) | 2.638 – 3.064 V | |||||
| Lifting switch | Operate (upward) | 0.789 – 1.755 V | ||||
| Operate (downward) | 0.352 – 0.788 V | |||||
| Sliding / lifting switch release | 3.963 – 4.799 V* | |||||
|
32 (B) |
Ground | Switch ground | — | Always | 0 V | |
|
33 (GR) |
Ground | Sensor ground | — | Always | 0 V | |
|
34 (Y) |
Ground | Power supply (encoder) | Output | Always | Battery voltage | |
|
35 (LG) |
Ground | Sliding sensor | Input | Seat sliding | Operate |
|
| Other than the above | 5 V* | |||||
|
36 (W) |
Ground | Reclining sensor | Input | Seat reclining | Operate |
|
| Other than the above | 5 V* | |||||
|
371 (L) |
Ground | Lumbar support X sensor | Input | Lumbar support motor | Operate |
|
| Other than the above | 5 V* | |||||
|
38 (Y) |
Ground | Memory indicator-1 | Output | Memory indicator-1 | Illuminate | 0 – 1.5 V |
| Other than the above | Battery voltage | |||||
|
43 (W) |
Ground | Sliding motor (forward) | Output | Seat sliding | Operate (forward) | Battery voltage |
| Other than the above | 0 V | |||||
|
44 (SB) |
Ground | Sliding motor (backward) | Output | Seat sliding | Operate (backward) | Battery voltage |
| Other than the above | 0 V | |||||
|
45 (BG) |
Ground | Lifting motor LH (rear) (upward) | Output | Seat lifting | Operate (upward) | Battery voltage |
| Other than the above | 0 V | |||||
|
46 (V) |
Ground | Lifting motor LH (rear) (downward) | Output | Seat lifting | Operate (downward) | Battery voltage |
| Other than the above | 0 V | |||||
|
47 (R) |
Ground | Reclining motor (forward) | Output | Seat reclining | Operate (forward) | Battery voltage |
| Other than the above | 0 V | |||||
|
48 (Y) |
Ground | Battery power supply | — | Always | Battery voltage | |
|
51 (B) |
Ground | Ground | — | Always | 0 V | |
|
52 (BR) |
Ground | Lifting motor LH (front) (downward) | Output | Seat lifting | Operate (downward) | Battery voltage |
| Other than the above | 0 V | |||||
|
53 (LG) |
Ground | Lifting motor LH (front) (upward) | Output | Seat lifting | Operate (upward) | Battery voltage |
| Other than the above | 0 V | |||||
|
56 (G) |
Ground | Reclining motor (backward) | Output | Seat reclining | Operate (backward) | Battery voltage |
| Other than the above | 0 V | |||||
*: When the power consumption control of driver seat control unit is in wake-up state.
1: With 4 way lumbar support system.
DTC Index
NOTE:
The details of time display are as follows:
-
CRNT: A malfunction is detected now.
-
PASS: A malfunction was detected in the past.
×: Applicable
| DTC No. | CONSULT display | Fail-safe | Reference |
|---|---|---|---|
| B2900-01 | Sliding / lifting switch | ― | DTC Description |
| B2920-09 | Driver seat control unit | ― | DTC Description |
| B2920-47 | Driver seat control unit | ― | DTC Description |
| B2920-48 | Driver seat control unit | ― | DTC Description |
| B2920-49 | Driver seat control unit | ― | DTC Description |
| B2921-A2 | Driver seat control unit | ― | DTC Description |
| B2921-A3 | Driver seat control unit | ― | DTC Description |
×: Applicable
| DTC No. | CONSULT display | Fail-safe | Reference |
|---|---|---|---|
| U2118-87 | CAN comm err (Intelligent Key) | ― | DTC Description |
| U2140-87 | CAN comm err (ECM) | ― | DTC Description |
| U2141-87 | CAN comm err (TCM) | ― | DTC Description |
| U2148-87 | CAN comm err (brake control unit) | ― | DTC Description |
| U214E-87 | CAN comm err (combination meter) | ― | DTC Description |
| U214F-87 | CAN comm err (BCM) | ― | DTC Description |
| U2150-87 | CAN comm err (AIR BAG) | ― | DTC Description |
| U2154-87 | CAN comm err (MIU) | ― | DTC Description |
| U2156-87 | CAN comm err (steering angel sensor) | ― | DTC Description |
| U215B-87 | CAN comm err (IPDM E/R) | ― | DTC Description |
Automatic Drive Positioner Control Unit Nissan Pathfinder 5th Gen
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
|
Terminal No. (wire color) | Description | Condition |
Voltage (Approx.) | |||
|---|---|---|---|---|---|---|
| + | - | Signal name | Input/Output | |||
|
1 (SB) |
Ground | Telescopic motor sensor signal | Input | Telescopic switch |
Operate (upward) |
0 V |
| Other than above | 5 V | |||||
|
2 (LG) |
Ground | Telescopic motor sensor power supply | Output | — | 5 V | |
|
3 (Y) |
Ground | Telescopic motor sensor ground | — | — | — | |
|
4 (LA/R) |
Ground | ADP steering switch signal | Input | ADP steering switch |
Operate |
0 V |
| Other than above | 5 V | |||||
|
6 (L) |
Ground | CAN-High | — | — | — | |
|
7 (BR) |
Ground | Tilt motor sensor signal | Input | Tilt switch |
Operate |
0 V |
| Other than above | 5 V | |||||
|
8 (LG) |
Ground | Tilt motor sensor power supply | Output | — | 5 V | |
|
9 (Y) |
Ground | Telescopic motor sensor ground | — | — | — | |
|
10 (LA/SB) |
Ground | Telescopic motor sensor ground | — | — | — | |
|
12 (R) |
Ground | CAN-Low | — | — | — | |
|
13 (L) |
Ground | Battery power supply | — | — | Battery voltage | |
|
14 (B) |
— | Ground | — | — | — | |
|
15 (LA/R) |
Ground | Tilt motor upward signal | Output | Tilt motor |
Operate (upward) |
Battery voltage |
| Other than above | 0 V | |||||
|
16 (LA/SB) |
Ground | Tilt motor downward signal | Output | Tilt motor |
Operate (downward) |
Battery voltage |
| Other than above | 0 V | |||||
|
17 (LA/V) |
Ground | Telescopic motor backward signal | Output | Telescopic motor |
Operate (backward) |
Battery voltage |
| Other than above | 0 V | |||||
|
18 (LA/BR) |
Ground | Telescopic motor forward signal | Output | Telescopic motor |
Operate (forward) |
Battery voltage |
| Other than above | 0 V | |||||
Bcm Nissan Pathfinder SUV
List of ECU Reference
| ECU | Reference |
|---|---|
| BCM | Values on the Diagnosis Tool |
| Reference Value | |
| Fail-safe | |
| DTC Inspection Priority Chart | |
| DTC Index |
Nissan Pathfinder (R53) 2022-2025 Service Manual
Ecu Diagnosis Information
Contact Us
Nissan Pathfinder Info Center
Email: info@nipathfinder.com
Phone: +1 (800) 123-4567
Address: 123 Pathfinder Blvd, Nashville, TN 37214, USA
Working Hours: Mon–Fri, 9:00 AM – 5:00 PM (EST)
