System Testing: Notes

NOTE: Before beginning system testing, perform TROUBLE SHOOTING .

NOTE: A New Generation Star (NGS) tester is required to test the power seat system. If NGS tester does not communicate with vehicle, refer to NGS tester manual.

Connect New Generation Star (NGS) tester to data link connector. Perform DATA LINK DIAGNOSTIC TEST. See MODULE COMMUNICATIONS NETWORK article. If NGS tester responds with CKT 914 and CKT 915=ALL MODULES NO RESPONSE/NOT EQUIPPED, diagnose network concern. See MODULE COMMUNICATIONS NETWORK article. If NGS tester responds with NO RESPONSE/NOT EQUIPPED for Driver Seat Module (DSM), go to TEST B: NO COMMUNICATION WITH DRIVER SEAT MODULE under DIAGNOSTIC TESTS. If NGS tester responds with NO RESPONSE/NOT EQUIPPED for Driver Door Module (DDM), go to TEST A: NO COMMUNICATION WITH DRIVER DOOR MODULE under DIAGNOSTIC TESTS.

If NGS tester responds with SYSTEM PASSED for all modules, retrieve Diagnostic Trouble Codes (DTCs) for both modules. If any DTCs exist, perform appropriate test. See appropriate DIAGNOSTIC TROUBLE CODE INDEX table. If no DTCs were retrieved, repair system by symptom. See SYMPTOM CHART and perform appropriate test.

DIAGNOSTIC TROUBLE CODE INDEX (DSM)

DTC

Description

Test

B1342

DSM Defective

⁽¹⁾

B1663

Driver Seat Front Up/Down Circuit Failure

B1664

Driver Seat Rear Up/Down Circuit Failure

B1665

Driver Seat Forward/Backward Circuit Failure

B1666

Driver Seat Recline Circuit Failure

B1667

Driver Mirror Up/Down Circuit Failure

⁽²⁾

B1668

Driver Mirror Right/Left Circuit Failure

⁽²⁾

B1669

Passenger Mirror Up/Down Circuit Failure

⁽²⁾

B1670

Passenger Mirror Right/Left Circuit Failure

⁽²⁾

B1676

Battery Voltage Out Of Range

B1950

Rear Up/Down Feedback - Circuit Failure

B1953

Rear Up/Down Feedback - Short to Ground

B1954

Front Up/Down Feedback - Circuit Failure

B1957

Front Up/Down Feedback - Short to Ground

B1958

Recline Feedback - Circuit Failure

B1961

Recline Feedback - Short To Ground

B1962

Horizontal Feedback - Circuit Failure

B1965

Horizontal Feedback - Short To Ground

B2312

Passenger Mirror Horizontal Feedback Potentiometer - Ckt Failure

⁽²⁾

B2315

Passenger Mirror Horizontal Feedback Potentiometer - Short To Ground

⁽²⁾

B2316

Passenger Mirror Vertical Feedback Potentiometer - Ckt Failure

⁽²⁾

B2319

Passenger Mirror Vertical Feedback Potentiometer - Short To Ground

⁽²⁾

B2320

Driver Mirror Horizontal Feedback Potentiometer - Ckt Failure

⁽²⁾

B2323

Driver Mirror Horizontal Feedback Potentiometer - Short To Ground

⁽²⁾

B2324

Driver Mirror Vertical Feedback Potentiometer - Ckt Failure

⁽²⁾

B2327

Driver Mirror Vertical Feedback Potentiometer - Short To Ground

⁽²⁾

U1059

Invalid/Missing Data For Transmission Range

⁽³⁾

U1135

Invalid/Missing Data For Ignition Switch

⁽⁴⁾

U1181

Invalid/Missing Data For Memory Feature

⁽⁵⁾

U1181

Invalid/Missing Data For Memory Feature

⁽⁶⁾

U1194

Invalid/Missing Data For Mirrors

⁽⁵⁾

U1200

Invalid/Missing Data For Seat Motion/Control

⁽⁷⁾

U1262

SCP Bus Communication Fault

⁽⁸⁾

⁽¹⁾	Replace driver seat module.

⁽²⁾	See POWER MEMORY MIRRORS article.

⁽³⁾	DTC caused by powertrain control module. See TESTS W/CODES article in the ENGINE PERFORMANCE section.

⁽⁴⁾	DTC caused by lighting control module. See INSTRUMENT PANELS article.

⁽⁵⁾	DTC caused by driver door module. See POWER MEMORY MIRRORS article.

⁽⁶⁾	DTC caused by virtual image electronic instrument cluster. See INSTRUMENT PANELS article.

⁽⁷⁾	DTC caused by driver door module. Perform driver door self-test.

⁽⁸⁾	Service all other DTCs first. After all other DTC concerns have been repaired, perform TEST N under TESTING in MODULE COMMUNICATIONS NETWORK article.

DIAGNOSTIC TROUBLE CODE INDEX (DDM)

DTC

Description

Test

B1319

Left Front Door Ajar Circuit Failure

⁽¹⁾

B1342

DDM Defective

⁽²⁾

B1396

Power Door Lock Short To Voltage

⁽³⁾

B1397

Power Door Unlock Short To Voltage

⁽³⁾

B1525

Keyless Entry Short To Voltage

⁽³⁾

B1541

Driver Mirror Short To Voltage

⁽⁴⁾

B1545

Power Seat Switch Short To Voltage

B1549

Power Window Switch Short To Voltage

⁽⁵⁾

B1554

Trunk Release Switch Short To Ground

⁽³⁾

B1562

Door Lock Cylinder Short To Ground

⁽³⁾

U1041

Invalid/Missing Data For Vehicle Speed

⁽⁶⁾

U1059

Invalid/Missing Data For Transmission Range

⁽⁷⁾

U1089

Invalid/Missing Data For Suspension

⁽⁸⁾

U1181

Invalid/Missing Data For Memory Feature

⁽⁹⁾

U1262

SCP Bus Communication Fault

⁽¹⁰⁾

⁽¹⁾	See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article.

⁽²⁾	Replace driver door module.

⁽³⁾	See REMOTE KEYLESS ENTRY SYSTEMS article.

⁽⁴⁾	See POWER MEMORY MIRRORS article.

⁽⁵⁾	See POWER WINDOWS article.

⁽⁶⁾	DTC caused by ABS system. See BRAKE SYSTEM - ANTI-LOCK article in the BRAKES section.

⁽⁷⁾	DTC caused by powertrain control module. See TESTS W/CODES article in the ENGINE PERFORMANCE section.

⁽⁸⁾	DTC caused vehicle dynamic module. See appropriate article in the SUSPENSION section.

⁽⁹⁾	DTC caused by virtual image electronic instrument cluster. See INSTRUMENT PANELS article.

⁽¹⁰⁾	Service all other DTCs first. After all other DTC concerns have been repaired, perform TEST N under TESTING in the MODULE COMMUNICATIONS NETWORK article.

SYMPTOM CHART

Symptom	Go To Diagnostic Test
Both Heated Seats Inoperative	N
Driver Heated Seat Cushion Inoperative	K
Driver Lumbar Inoperative	P
Driver Seat Completely Inoperative	C
Driver Seat Does Not Move Horizontally/Vertically	C
Driver Seat Heater Inoperative	J
Easy Exit/Entry Feature Inoperative	H
Memory Seat Inoperative	G
No Communication Wit Driver Door Module	A
No Communication With Driver Seat Module	B
Passenger Heated Seat Cushion Inoperative	M
Passenger Lumbar Inoperative	Q
Passenger Seat Completely Inoperative	D
Passenger Seat Does Not Move Horizontally/Vertically	F
Passenger Seat Heater Inoperative	L
Seat Does Not Make Full Travel	E