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 TESTS .
Retrieve DTCs and perform appropriate test. See DIAGNOSTIC TROUBLE CODE INDEX table.

DIAGNOSTIC TROUBLE CODE INDEX

DTC

Description

Module Malfunction

B1397, B1398 Or B1480

⁽¹⁾

Horizontal Motor Malfunction

Front Vertical Motor Malfunction

Rear Vertical Motor Malfunction

Recline Motor Malfunction

Recline Sensor Performance

Front Vertical Sensor Performance

Rear Vertical Sensor Performance

Horizontal Sensor Performance

Seat Switch Check Malfunction

UXXXX

⁽²⁾

⁽¹⁾	See appropriate BODY CONTROL MODULES article.

⁽²⁾	For any DTC beginning with the letter "U", diagnose communication problem with class 2 device. See SELF-DIAGNOSTIC SYSTEM in appropriate BODY CONTROL MODULES article.