LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 1998 >> Mark VIII Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Steering Column Switches >> System Testing

System Testing

NOTE: Before beginning system testing, perform TROUBLE SHOOTING  .
NOTE: A New Generation Star (NGS) tester is required to test the system. If New Generation Star (NGS) tester does not communicate with vehicle, refer to NGS tester manual.

Connect New Generation Star (NGS) tester to Data Link Connector (DLC). Perform DATALINK DIAGNOSTIC TEST. See MODULE COMMUNICATIONS NETWORK article. 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 Steering Column/Ignition/Lighting (SCIL) module, go to TEST B: NO COMMUNICATION WITH SCIL MODULE  under DIAGNOSTIC TESTING.

If NGS tester responds with SYSTEM PASSED for SCIL module, retrieve DTCs for SCIL module. If any DTCs exist, perform appropriate test. See STEERING COLUMN/IGNITION/LIGHTING (SCIL) MODULE DTC DEFINITIONS table. If no DTCs were retrieved, repair system by symptom. See SYMPTOM CHART  and perform appropriate test under DIAGNOSTIC TESTING  .

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 (6)
B1364 Ignition START Circuit Open (7)
B1446 Wiper Park Sensor Circuit Failure DTC B1446 
B1485 Brake Pedal Input Short To Battery (3)
B1490 Right Front Door Handle Short To Ground (8)
B1498 Deck Lid Punchout Switch Short To Ground (8)
B1509 Flash-To-Pass Switch Ckt Short To Battery DTC B1509 
B1514 Left Front Door Handle Short To Ground (8)
B1522 Hood Switch Circuit Short To Ground (9)
B1562 Door Lock Cylinder Circuit Short To Ground (9)
B1566 Door Ajar Circuit Short To Ground (9)
B1600 PATS Ignition Key Transponder Signal Is Not Received (9)
B1601 PATS Received Incorrect Ignition Key Code From Ignition Key Transponder (9)
B1676 Battery Voltage Out Of Range (9)
B1682 PATS Is Disabled (9)
B1687 Dome Light Input Circuit Short To Battery (9)
B1689 Autolamp Delay Circuit Failure (9)
B1796 Headlight Low Beam Circuit Short To Battery (9)
B1875 Turn Signal/Hazard Switch Signal Ckt Failure DTC B1875 
B1980 Bulb Outage Condition Detected (9)
B2328 Steering Column Reach Feedback Potentiometer Ckt Failure DTC B2328 
B2332 Steering Column Tilt Feedback Potentiometer Ckt Failure DTC B2332 
B2351 Steering Column Switch Signal Ckt Failure DTC B2351 
U1027 SCP Invalid Or Missing Data For Engine RPM (10)
U1041 SCP Invalid Or Missing Data For Vehicle Speed (11)
U1057 SCP Invalid Or Missing Data For Vehicle Configuration (12)
U1059 SCP Invalid Or Missing Data For Trans. PRNDL (10)
U1123 SCP Invalid Or Missing Data For Odometer (11)
U1147 SCP Invalid Or Missing Data For Vehicle Security (10)
U1180 SCP Invalid Or Missing Data For Memory Features (13)
U1181 SCP Invalid Or Missing Data For Memory Features (13)
U1197 SCP Invalid Or Missing Data For Door Locks (13)
U1198 SCP Invalid/Missing Data For External Access Doors (13)
U1199 SCP Invalid/Missing Data For External Access Doors (13)
U1211 SCP Invalid Or Missing Data For Restraints (14)
U1222 SCP Invalid Or Missing Data For Internal Lights (12)
(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 DTCs. Repeat SCIL module self-test. If DTC B1342 is retrieved again, replace SCIL module.
(5) If DTC B1353 is retrieved, perform TEST C  : IGNITION KEY-IN CIRCUIT OPEN under DIAGNOSTIC TESTING. If DTC B1353 and B1364 are both retrieved, perform TEST A  : IGNITION SWITCH POWER SUPPLY FAILURE under DIAGNOSTIC TESTING.
(6) Perform TEST D: IGNITION RUN/ACC CIRCUIT OPEN  under DIAGNOSTIC TESTING.
(7) If DTC B1364 is retrieved, perform TEST E  : IGNITION START CIRCUIT OPEN under DIAGNOSTIC TESTING. If DTC B1353 and B1364 are both retrieved, perform TEST A  : IGNITION SWITCH POWER SUPPLY FAILURE under DIAGNOSTIC TESTING.
(8) This is an invalid DTC. DO NOT  attempt to repair.
(9) See ANTI-THEFT SYSTEMS - PASSIVE article.
(10) DTC caused by powertrain control module. Perform PCM self-test. See G - TESTING W/CODES article in the ENGINE PERFORMANCE section.
(11) DTC caused by ABS module. Using NGS tester, perform ABS self-test. See BRAKE SYSTEM - ANTI-LOCK article in the BRAKES section.
(12) Using NGS tester, perform SCIL module self-test.
(13) Caused by Driver Door Module (DDM). Using NGS tester, perform DDM self-test.
(14) Caused By Driver Seat Module (DSM). Using NGS tester, perform DSM self-test.
SYMPTOM CHART

Symptom Go To Test
Ignition Switch Power Supply Failure A 
No Communication With SCIL Module B 
Ignition Key-In Circuit Open C 
Ignition RUN/ACC Circuit Open D 
Ignition Start Circuit Open E 
Turn Signal Lights/Hazard Flasher Lights Inoperative F 
Flash-To-Pass Feature Inoperative G 
Steering Column Potentiometer Circuit Failure H 
Steering Column Tilt Adjustment Inoperative J 
Steering Column Telescope Adjustment Inoperative K 
Steering Column Tilt And Telescope Adjustments Inoperative L 
scientia non olet · About LEMON Manuals