Self-Diagnostics (Gem)

WARNING: This page is about a different car, the 2002 Lincoln Blackwood. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before performing any system test, perform TROUBLE SHOOTING . After repair has been completed, clear any Diagnostic Trouble Codes (DTC) that exist and recheck system for proper operation.

Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below center of instrument panel, right of steering column. Using NGS tester, perform DATA LINK DIAGNOSTIC TEST. If NGS tester displays CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, diagnose module problem. See MODULE COMMUNICATIONS NETWORK - BLACKWOOD article. If NGS tester displays NO RESP/NOT EQUIP for Generic Electronic Module (GEM), perform NO COMMUNICATION WITH GENERIC ELECTRONIC MODULE under SYSTEM TESTS. If NGS tester displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Perform self-test diagnostics for GEM using NGS tester. If GEM DTCs related to the concern are retrieved, see GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE TEST INDEX table to continue diagnosis. If no DTCs related to problem are retrieved, diagnose by symptom. See SYMPTOM TEST INDEX .

GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE TEST INDEX

DTC ⁽¹⁾

Description

Perform Test

B1342

Generic Electronic Module Is Defective

⁽²⁾

B1431

Wiper Brake/Run Relay Circuit Failure

⁽³⁾

B1432

Wiper Brake/Run Relay Short To Battery

B1434

Wiper Hi/Low Speed Relay Circuit Failure

B1436

Wiper Hi/Low Speed Relay Circuit Short To Battery

B1438

Wiper Mode Select Switch Circuit Failure

⁽³⁾

B1441

Wiper Mode Select Switch Input Short To Ground

⁽³⁾

B1446

Wiper Park Sense Circuit Failure

B1450

Wiper/Wash Interval Delay Switch Input Circuit Failure

⁽³⁾

B1453

Wiper/Wash Interval Delay Switch Input Short To Ground

B1454

Wiper Washer Fluid Lamp Circuit Failure

B1456

Wiper Washer Fluid Lamp Circuit Short To Voltage

B1458

Wiper/Washer Pump Motor Relay Circuit Failure

B1460

Wiper/Washer Pump Motor Relay Coil Short To Battery

B1466

Wiper Hi/Low Speed Not Switching

B1473

Wiper Motor Low Speed Circuit Failure

B1476

Wiper Motor High Speed Circuit Failure

B1840

Front Wiper Power Circuit Failure

P0500

Vehicle Speed Sensor Malfunction

⁽¹⁾	Codes listed in this table are only for testing covered in this article. For complete DTC listing, see MODULE COMMUNICATIONS NETWORK - BLACKWOOD article.

⁽²⁾	Using NGS tester clear DTCs. Retrieve DTCs. If DTC B1342 is retrieved, replace GEM and retest system.

⁽³⁾	Refer to SYMPTOM TEST INDEX table in SYSTEM TESTS.