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System Testing

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 DATALINK DIAGNOSTIC TEST. If NGS tester responds with CKT 914, CKT 915 or CKT 70=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 G: NO COMMUNICATION WITH DRIVER SEAT MODULE  under SYMPTOM TESTING. If NGS tester responds with, NO RESPONSE/NOT EQUIPPED for Passenger Seat Module (PSM), go to TEST H: NO COMMUNICATION WITH PASSENGER SEAT MODULE  under SYMPTOM TESTING. If NGS tester responds with, NO RESPONSE/NOT EQUIPPED for Steering Column/Ignition/Lighting (SCIL) module, go to TEST J: NO COMMUNICATION WITH SCIL MODULE  under SYMPTOM TESTING.

If NGS tester responds with SYSTEM PASSED for all modules, retrieve DTCs for all modules. If any DTCs exist, perform appropriate test. See appropriate DTC DEFINITIONS table. If no DTCs were retrieved, repair system by symptom. See SYMPTOM CHART  under SYMPTOM TESTING and perform appropriate test.

DTC DEFINITIONS (DRIVER SEAT MODULE)

DTC Description Test
B1342 ECU Defective DTC B1342 
B1462 Driver Safety Belt Switch Circuit Failure (1)
B1597 Driver Seat Back Auto-Glide Forward Circuit Short A 
B1676 Battery Voltage Out Of Range DTC B1676 
B1703 Driver Seat Recline Forward Circuit Short To Voltage B 
B1707 Driver Seat Recline Rearward Circuit Short To Voltage B 
B1711 Driver Seat Front Up Circuit Short To Voltage C 
B1715 Driver Seat Front Down Circuit Short To Voltage C 
B1719 Driver Seat Forward Circuit Short To Voltage D 
B1723 Driver Seat Rearward Circuit Short To Voltage D 
B1727 Driver Seat Rear Up Circuit Short To Voltage E 
B1731 Driver Seat Rear Down Circuit Short To Voltage E 
B1950 Driver Seat Rear Up/Down Feedback Ckt Failure DTC B1950 
B1954 Driver Seat Front Up/Down Feedback Ckt Failure DTC B1954 
B1958 Driver Seat Recline Forward/Backward Feedback Feedback Ckt Failure DTC B1958 
B1962 Driver Seat Horizontal Forward/Backward Feedback Ckt Failure DTC B1962 
B1986 Driver Seat Auto-Glide Rearward Switch Ckt Failure DTC B1986 
B2312 Passenger Mirror Horizontal Feedback Potentiometer Ckt Failure (2)
B2316 Passenger Mirror Vertical Feedback Potentiometer Ckt Failure (2)
B2320 Passenger Mirror Horizontal Feedback Potentiometer Ckt Failure (2)
B2324 Passenger Mirror Vertical Feedback Potentiometer Ckt Failure (2)
U1059 Invalid/Missing Data For Transmission Range (3)
U1117 Invalid/Missing Data - Electrical Energy Management (4)
U1135 Invalid/Missing Data For Ignition Switch (5)
U1180 Invalid/Missing Data For Memory Feature (6)
U1181 Invalid/Missing Data For Memory Feature (6)
U1194 Invalid/Missing Data For Mirrors (6)
U1199 Invalid/Missing Data For External Access (7)
(1) See INSTRUMENT PANELS - ANALOG article.
(2) See MIRRORS - POWER MEMORY 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 POWER WINDOWS article.
(5) DTC caused by lighting control module. See INSTRUMENT PANELS - ANALOG article.
(6) DTC caused by driver door module. See MIRRORS - POWER MEMORY article.
(7) DTC caused by steering column/ignition/lighting control module. See DOOR LOCKS - POWER article.
DTC DEFINITIONS

DTC Description Go To Test
B1248 Passenger Seat Auto-Glide Rear Switch Ckt Open DTC B1248 
B1342 ECU Defective DTC B1342 
B1360 Ignition Switch RUN/ACC Circuit Open DTC B1360 
B1565 Door Ajar Signal Short To Voltage DTC B1565 
B1599 Passenger Seat Back Auto-Glide Forward Ckt Short A 
B1676 Battery Voltage Out Of Range DTC B1676 
B1962 Passenger Seat Horizontal Forward/Backward Feedback Ckt Failure DTC B1962 
B1972 Passenger Seat Rear Up Switch Short To Voltage E 
B1973 Passenger Seat Rear Down Switch Short To Voltage E 
B1974 Passenger Seat Recline Forward Switch Short To Voltage B 
B1975 Passenger Seat Recline Rear Switch Short To Voltage B 
B1976 Passenger Seat Forward Switch Short To Voltage D 
B1977 Passenger Seat Front Up Switch Short To Voltage C 
B1978 Passenger Seat Front Down Switch Short To Voltage C 
B1979 Passenger Seat Rearward Switch Short To Voltage D 
STEERING COLUMN/IGNITION/LIGHTING (SCIL) MODULE DTC DEFINITIONS

DTC Description Test
C1446 Brake Switch Circuit Failure (1)
B1246 Panel Dim Potentiometer Switch Circuit Failure (2)
B1312 Headlight Input Circuit Short To Battery (3)
B1334 Luggage Compartment Door Ajar Ckt Short To Ground (2)
B1342 ECU Defective (4)
B1353 Ignition Key-In Circuit Open (5)
B1360 Ignition RUN/ACC Circuit Open (5)
B1364 Ignition START Circuit Open (5)
B1446 Wiper Park Sensor Circuit Failure AB 
B1485 Brake Pedal Input Short To Battery (3)
B1509 Flash-To-Pass Switch Circuit Short To Battery (3)
B1522 Hood Switch Circuit Short To Ground (5)
B1562 Door Lock Cylinder Circuit Short To Ground (5)
B1566 Door Ajar Circuit Short To Ground (2)
B1600 PATS Ignition Key Transponder Signal Is Not Received (5)
B1601 PATS Received Incorrect Ignition Key Code From Ignition Key Transponder (5)
B1676 Battery Voltage Out Of Range AC 
B1682 PATS Is Disabled (5)
B1687 Dome Light Input Circuit Short To Battery (2)
B1689 Autolamp Delay Circuit Failure (3)
B1796 Headlight Low Beam Circuit Short To Battery (3)
B1875 Turn Signal/Hazard Switch Signal Circuit Failure (3)
B1980 Bulb Outage Condition Detected (3)
B2328 Steering Column Reach Feedback Potentiometer Ckt Failure (6)
B2332 Steering Column Tilt Feedback Potentiometer Ckt Failure (6)
B2351 Steering Column Switch Signal Circuit Failure (6)
U1027 SCP Invalid Or Missing Data For Engine RPM (7)
U1041 SCP Invalid Or Missing Data For Vehicle Speed (1)
U1057 SCP Invalid Or Missing Data For Vehicle Configuration (3)
U1059 SCP Invalid Or Missing Data For Transmission PRNDL (7)
U1123 SCP Invalid Or Missing Data For Odometer (1)
U1147 SCP Invalid Or Missing Data For Vehicle Security (7)
U1180 SCP Invalid Or Missing Data For Memory Features (8)
U1181 SCP Invalid Or Missing Data For Memory Features (8)
U1197 SCP Invalid Or Missing Data For Door Locks (5)
U1198 SCP Invalid Or Missing Data For External Access Doors (5)
U1199 SCP Invalid Or Missing Data For External Access Doors (2)
U1211 SCP Invalid Or Missing Data For Restraints (9)
U1222 SCP Invalid Or Missing Data For Internal Lights (5)
(1) See BRAKE SYSTEM - ANTI-LOCK article in the BRAKES section.
(2) See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article.
(3) See appropriate wiring diagram in EXTERIOR LIGHTS article.
(4) Repair all other concerns. After all other concerns are repaired, clear all SCIL module DTC. Using NGS tester, repeat SCIL module self-test. If DTC B1342 is retrieved again, replace SCIL module.
(5) See ANTI-THEFT SYSTEMS - PASSIVE article.
(6) See STEERING COLUMNS article in the STEERING section.
(7) DTC caused by powertrain control module. Using NGS tester, perform PCM self-test. See TESTS W/CODES article in the ENGINE PERFORMANCE section.
(8) See MIRRORS - POWER MEMORY article.
(9) Caused by DSM module. Using NGS tester, perform DSM self-test.
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