System Testing

NOTE: Before beginning system testing, perform TROUBLE SHOOTING.

NOTE: A New Generation Star (NGS) tester is required to test the power mirror 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 DATALINK DIAGNOSTIC TEST. See MODULE COMMUNICATIONS NETWORK. 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) or exits self-test and returns to normal operating state, go to TEST B under DIAGNOSTIC TESTS. If NGS tester responds with, NO RESPONSE/NOT EQUIPPED for Driver Door Module (DDM) or exits self-test and returns to normal operating state, go to TEST A under DIAGNOSTIC TESTS.

If NGS tester responds with SYSTEM PASSED for all modules, retrieve 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 table and perform appropriate test.

DIAGNOSTIC TROUBLE CODE INDEX (DSM)

DTC

Description

Go To Test

B1342

DSM Defective

⁽¹⁾

B1663

Driver Seat Front Up/Down Circuit Failure

⁽²⁾

B1664

Driver Seat Rear Up/Down Circuit Failure

⁽²⁾

B1665

Driver Seat Fore/Back Circuit Failure

⁽²⁾

B1666

Driver Seat Recline Circuit Failure

⁽²⁾

B1667

Driver Mirror Up/Down Circuit Failure

B1668

Driver Mirror Right/Left Circuit Failure

B1669

Passenger Mirror Up/Down Circuit Failure

B1670

Passenger Mirror Right/Left Circuit Failure

B1676

Battery Voltage Out Of Range

⁽²⁾

B1950

Rear Up/Down Feedback - Circuit Failure

⁽²⁾

B1953

Rear Up/Down Feedback - Short to Ground

⁽²⁾

B1954

Front Up/Down Feedback - Circuit Failure

⁽²⁾

B1957

Front Up/Down Feedback - Short to Ground

⁽²⁾

B1958

Recline Feedback - Circuit Failure

⁽²⁾

B1961

Recline Feedback - Short To Ground

⁽²⁾

B1962

Horizontal Feedback - Circuit Failure

⁽²⁾

B1965

Horizontal Feedback - Short To Ground

⁽²⁾

B2312

Passenger Mirror Horizontal Feedback Potentiometer - Circuit Failure

B2315

Passenger Mirror Horizontal Feedback Potentiometer - Short To Ground

B2316

Passenger Mirror Vertical Feedback Potentiometer - Circuit Failure

B2319

Passenger Mirror Vertical Feedback Potentiometer - Short To Ground

B2320

Driver Mirror Horizontal Feedback Potentiometer - Circuit Failure

B2323

Driver Mirror Horizontal Feedback Potentiometer - Shirt To Ground

B2324

Driver Mirror Vertical Feedback Potentiometer - Circuit Failure

B2327

Driver Mirror Vertical Feedback Potentiometer - Short To Ground

U1059

Invalid/Missing Data, Trans Range

⁽³⁾

U1135

Invalid/Missing Data, Ignition Switch

⁽⁴⁾

U1181

Invalid/Missing Data, Memory Feature

⁽⁵⁾

U1181

Invalid/Missing Data, Memory Feature

⁽⁶⁾

U1194

Invalid/Missing Data, Mirrors

⁽⁵⁾

U1200

Invalid/Missing Data, Seat Motion/Control

⁽⁷⁾

U1262

Bus Communication Fault

⁽⁸⁾

⁽¹⁾	Replace driver seat module.

⁽²⁾	See POWER SEATS article.

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

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

⁽⁵⁾	DTC caused by driver door module. Perform DDM self-test.

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

⁽⁷⁾	DTC caused by driver door module. See POWER SEATS article.

⁽⁸⁾	Service all other DTCs first. After all other DTCs have been repaired, see MODULE COMMUNICATIONS NETWORK article.

DIAGNOSTIC TROUBLE CODE INDEX (DDM)

DTC

Description

Go To 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

B1545

Power Seat Switch Short To Voltage.

⁽⁴⁾

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

Bus Communication Fault

⁽¹⁰⁾

⁽¹⁾	See ILLUMINATION/INTERIOR LIGHTS wiring diagram in SYSTEM WIRING DIAGRAMS article in the WIRING DIAGRAMS section.

⁽²⁾	Replace driver door module.

⁽³⁾	See REMOTE KEYLESS ENTRY SYSTEM article.

⁽⁴⁾	See POWER SEATS article.

⁽⁵⁾	See POWER WINDOWS article.

⁽⁶⁾	DTC caused by ABS system. See ANTI-LOCK BRAKE SYSTEM 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 SUSPENSION section.

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

⁽¹⁰⁾	Service all other DTCs first. After all other DTC have been repaired, see MODULE COMMUNICATIONS NETWORK article.

SYMPTOM CHART

Symptom	Go To Diagnostic Test
No Communication With DDM	A
No Communication With DSM	B
Single Mirror Inoperative	C
Mirror Operates In One Second Intervals	D
Reverse Tilt Function Inoperative	E
Memory Mirror Inoperative	F
Auto Dimming Feature Inoperative	G
Heated Mirror Inoperative	H