Preliminary Procedure

Verify customers complaint by operating door lock system. Check for obvious signs of mechanical or electrical damage. Check for blown fuse(s), loose or corroded connectors, or damaged wiring harness. Check for binding latch and linkage. Check for opens in fuses No. 12 (10-amp) and No. 19 (10-amp). Repair or replace components as necessary.
If all components are okay, connect NGS tester to DLC located below instrument panel. Using NGS tester, perform DATA LINK DIAGNOSTIC TEST. If NGS tester displays CKT 70=00000000F or ALL MODULES NO RESP/NOT EQUIP, see MODULE COMMUNICATIONS NETWORK article to diagnose network concern. If NGS tester displays NO RESP/NOT EQUIP for Remote Anti-Theft Personality Module (RAP), perform TEST A: NO COMMUNICATION WITH RAP MODULE under SYSTEM TESTING. If NGS tester displays NO RESP/NOT EQUIP for Generic Electronic Module (GEM), perform TEST B: NO COMMUNICATION WITH GEM MODULE under SYSTEM TESTING.
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 are retrieved, see GENERIC ELECTRONIC MODULE (GEM) DTC DEFINITIONS table to continue diagnosis. If RAP DTCs are retrieved, see REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC INDEX to continue diagnosis. If no DTCs are retrieved, perform appropriate symptom test under SYSTEM TESTING .

GENERIC ELECTRONIC MODULE (GEM) DTC DEFINITIONS

DTC

Source Module

Description

B1243

GEM

⁽¹⁾ Express Window Down Switch Ckt Failure

B1244

GEM

⁽²⁾ Rear Wiper Relay Coil Ckt Failure

B1245

GEM

⁽²⁾ Rear Wiper Relay Coil Short To Battery

B1302

GEM

⁽¹⁾ Accessory Delay Relay Coil Ckt Failure

B1304

GEM

⁽¹⁾ Accessory Delay Relay Coil Ckt Open Or Short To Battery

B1309

GEM

⁽³⁾ Power Door Lock Ckt Failure

B1312

GEM

⁽⁴⁾ Headlight Ckt Short To Battery Power

B1313

GEM

⁽⁵⁾ Battery Saver Relay Coil Ckt Failure

B1315

GEM

⁽⁵⁾ Battery Saver Relay Coil Ckt Short To Battery

B1317

GEM

⁽⁵⁾ Battery Voltage High

B1318

GEM

⁽⁵⁾ Battery Voltage Low

B1322

GEM

⁽⁵⁾ Left Front Door Ajar Ckt Short To Ground

B1323

GEM

⁽⁶⁾ Door Ajar Light Ckt Failure

B1325

GEM

⁽⁶⁾ Door Ajar Light Ckt Short To Battery

B1330

GEM

⁽⁵⁾ Right Front Door Ajar Ckt Short To Ground

B1334

GEM

⁽⁵⁾ Liftgate Ajar Rear Door Ckt Short To Ground

B1335

GEM

⁽⁵⁾ Sliding Door Ajar Ckt Failure

B1341

GEM

⁽⁷⁾ Power Door Unlock Ckt Short To Ground

B1342

GEM

⁽²⁾ ECU Is Defective

B1345

GEM

⁽¹⁾ Heated Backlite Input Ckt Short To Ground

B1347

GEM

⁽¹⁾ Heated Backlite Relay Ckt Failure

B1349

GEM

⁽¹⁾ Heated Backlite Relay Ckt Short To Battery

B1352

GEM

⁽⁴⁾ Ignition Key-In Ckt Failure

B1355

GEM

⁽⁸⁾ Ignition Run Ckt Failure

B1359

GEM

⁽⁸⁾ Ignition RUN/ACC Ckt Failure

B1365

GEM

⁽⁸⁾ Ignition START Ckt Failure

B1371

GEM

⁽⁵⁾ Illuminated Entry Relay Ckt Failure

B1373

GEM

⁽⁵⁾ Interior Light Relay Coil Ckt Short To Battery

B1392

GEM

⁽⁹⁾ Memory Door Lock Relay Coil Ckt Failure

B1394

GEM

⁽⁹⁾ Memory Door Lock Relay Coil Short To Battery

B1398

GEM

⁽¹⁾ Power Window 1-Touch Window Relay Ckt Failure

B1400

GEM

⁽¹⁾ Power Window 1-Touch Window Relay Coil Ckt Short To Battery

B1404

GEM

⁽¹⁾ Driver Door Power Window Down Ckt Open

B1405

GEM

⁽¹⁾ Driver Door Power Window Down Ckt Short To Battery

B1408

GEM

⁽¹⁾ Driver Door Power Window Up Ckt Short To Battery

B1410

GEM

⁽¹⁾ Driver Door Power Window Motor Ckt Failure

B1426

GEM

⁽⁶⁾ Seat Belt Light Output Ckt Short To Battery

B1428

GEM

⁽⁶⁾ Seat Belt Light Output Ckt Failure

B1431

GEM

⁽²⁾ Wiper Brake/Run Relay Ckt Failure

B1432

GEM

⁽²⁾ Wiper Brake/Run Relay Short To Battery

B1434

GEM

⁽²⁾ Wiper Hi/Low Speed Relay Ckt Failure

B1436

GEM

⁽²⁾ Wiper Hi/Low Speed Relay Ckt Short To Battery

B1438

GEM

⁽²⁾ Wiper Mode Select Switch Ckt Failure

B1441

GEM

⁽²⁾ Wiper Mode Select Switch Input Short To Ground

B1446

GEM

⁽²⁾ Wiper Park Sense Ckt Failure

B1448

GEM

⁽²⁾ Wiper Park Sense Ckt Short To Battery

B1450

GEM

⁽²⁾ Wiper/Wash Interval Delay Switch Input Ckt Failure

B1453

GEM

⁽²⁾ Wiper/Wash Interval Delay Switch Input Short To Ground

B1456

GEM

⁽²⁾ Low Washer Fluid Indicator Output Ckt Short To Battery

B1458

GEM

⁽²⁾ Wiper/Washer Pump Motor Relay Ckt Failure

B1460

GEM

⁽²⁾ Wiper/Washer Pump Motor Relay Coil Short To Battery

B1462

GEM

⁽⁶⁾ Seat Belt Switch Ckt Failure

B1466

GEM

⁽²⁾ Wiper Hi/Low Speed Not Switching

B1467

GEM

⁽²⁾ Wiper Motor Hi/Low Speed Ckt Short To Battery

B1473

GEM

⁽²⁾ Wiper Motor Low Speed Ckt Failure

B1475

GEM

⁽¹⁾ Delayed Accessory Relay Contacts Short To Battery

B1476

GEM

⁽²⁾ Wiper Motor High Speed Ckt Failure

B1501

GEM

⁽⁴⁾ Left Turn Signal Switch Short To Battery

B1505

GEM

⁽⁴⁾ Right Turn Signal Switch Short To Battery

B1610

GEM

⁽⁵⁾ Illuminated Entry Input Request Ckt Short To Ground

B1613

GEM

⁽²⁾ Rear Wiper Mode Select Switch Short To Battery

B1629

GEM

⁽²⁾ PRNDL Reverse Input Short To Battery

B1896

GEM

⁽⁵⁾ Front Door(s) Ajar Output Short To Battery

B1982

GEM

⁽¹⁰⁾ Driver Door Unlock Relay Coil Ckt Failure

B1983

GEM

⁽¹¹⁾ Driver Door Unlock Relay Coil Short To Battery

C1724

GEM

⁽¹²⁾ Height Sensor Power Ckt Failure

C1763

GEM

⁽¹²⁾ Height Sensor High Signal Short To Ground

C1768

GEM

⁽¹²⁾ Height Sensor Low Signal Short To Ground

C1770

GEM

⁽¹²⁾ Air Suspension Vent Solenoid Ckt Failure

C1772

GEM

⁽¹²⁾ Air Suspension Vent Solenoid Short To Battery

C1790

GEM

⁽¹²⁾ Left Rear Air Spring Solenoid Ckt Failure

C1792

GEM

⁽¹²⁾ Left Rear Air Spring Solenoid Short To Battery

C1795

GEM

⁽¹²⁾ Right Rear Air Spring Solenoid Ckt Failure

C1797

GEM

⁽¹²⁾ Right Rear Air Spring Solenoid Short To Battery

C1790

GEM

⁽¹²⁾ Left Rear Air Spring Solenoid Ckt Failure

C1813

GEM

⁽¹²⁾ Air Suspension Vent Request Exceeds Maximum Timing

C1818

GEM

⁽¹²⁾ Air Compressor Request Exceeds Maximum Timing

C1830

GEM

⁽¹²⁾ Air Compressor Relay Coil Ckt Failure

C1832

GEM

⁽¹²⁾ Air Compressor Relay Coil Short To Battery

C1840

GEM

⁽¹²⁾ Air Suspension Service Switch Ckt Failure

C1850

GEM

⁽¹²⁾ Air Suspension Warning Indicator Ckt Failure

C1852

GEM

⁽¹²⁾ Air Suspension Warning Indicator Short To Battery

P0500

GEM

⁽¹²⁾ Vehicle Speed Signal Ckt Failure

⁽¹⁾	See POWER WINDOWS article for testing procedures.

⁽²⁾	See WIPER/WASHER SYSTEMS article for testing procedures.

⁽³⁾	Perform TEST B1309 under DIAGNOSTIC TROUBLE CODE TESTING.

⁽⁴⁾	Test wiring for opens and/or shorts and repair as necessary. See appropriate wiring diagram in WARNING SYSTEMS article.

⁽⁵⁾	Test wiring for opens and/or shorts and repair as necessary. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article.

⁽⁶⁾	See INSTRUMENT PANELS article for testing procedures.

⁽⁷⁾	Perform TEST B1341 under DIAGNOSTIC TROUBLE CODE TESTING.

⁽⁸⁾	See STEERING COLUMN SWITCHES article for testing procedures.

⁽⁹⁾	See DOOR LOCKS - POWER article for testing procedures.

⁽¹⁰⁾	Perform TEST B1982 test under DIAGNOSTIC TROUBLE CODE TESTING.

⁽¹¹⁾	Perform TEST B1983 test under DIAGNOSTIC TROUBLE CODE TESTING.

⁽¹²⁾	See ELECTRONIC article in the SUSPENSION section for testing procedures.