Diagnostic System Check
- Install scan tool. If scan tool powers up, go to next step. If scan tool does not power up, perform appropriate diagnostic procedure. See
SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.
- Turn ignition on, engine off. Following scan tool manufacturer's instructions, attempt to establish communication with seat memory module. If communication with seat memory module is established, go to next step. If communication with seat memory module is not established, diagnose communication problem with class 2 device. See
SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.
- Select display DTC function for seat memory module. Record all displayed DTCs and status of displayed DTCs. If DTCs are displayed, go to next step. If no DTCs are displayed, diagnose by symptom. See SYMPTOM INDEX
under SYSTEM TESTS.
- If scan tool displays any codes that begin with a "U", see SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
If scan tool does not display any codes that begin with "U", go to next step.
- If scan tool displays DTC B1424 or B1425, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If scan tool does not display DTC B1424 or B1425, see DIAGNOSTIC TROUBLE CODE INDEX
.
DIAGNOSTIC TROUBLE CODE INDEX
| DTC |
Description |
| B1770 |
Horizontal Motor Malfunction |
| B1775 |
Front Vertical Motor Malfunction |
| B1780 |
Rear Vertical Motor Malfunction |
| B1785 |
Recline Motor Malfunction |
| B1826 |
Recline Sensor Performance |
| B2356 |
Front Vertical Sensor Performance |
| B2366 |
Rear Vertical Sensor Performance |
| B2376 |
Horizontal Sensor Performance |
| B3792 |
Seat Switch Check Malfunction |
| UXXXX |
|