Preliminary Procedure

Verify customers complaint by operating remote keyless entry system. Check for damaged remote transmitter, or low transmitter batteries. Check for binding lock mechanisms. Check for blown fuse(s), loose or corroded connectors, or damaged wiring harness. 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 914, CKT 915 or CKT 70=ALL ECUS NO RESP/NOT EQUIP, see MODULE COMMUNICATIONS NETWORK article to diagnosis network concern. If NGS tester displays NO RESP/NOT EQUIP for Driver Door Module (DDM), perform TEST B: NO COMMUNICATION WITH DDM under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article. If NGS tester displays NO RESP/NOT EQUIP for Lighting Control Module (LCM), perform TEST A: NO COMMUNICATION WITH LCM under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article.
If NGS tester displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Perform self-test diagnostics for DDM and LCM using NGS tester. If DDM DTCs are retrieved, see DRIVER DOOR MODULE (DDM) DTC DEFINITIONS table to continue diagnosis. If LCM DTCs are retrieved, see LIGHTING CONTROL MODULE (LCM) DTC DEFINITIONS table to continue diagnosis. If no DTCs are retrieved, perform appropriate symptom test under SYSTEM TESTING .

DRIVER DOOR MODULE (DDM) DTC DEFINITIONS

DTC

Source Module

Description

B1322

DDM

⁽¹⁾ Door Ajar Circuit Failure

B1342

DDM

⁽²⁾ ECU Defective

B1396

DDM

⁽³⁾ Power Door Lock Circuit Short To Battery

B1397

DDM

⁽³⁾ Power Door Unlock Circuit Short To Battery

B1402

DDM

⁽⁴⁾ Driver Door Window Switch Down Circuit Open

B1529

DDM

⁽⁵⁾ Memory Set Switch Circuit Short To Battery

B1533

DDM

⁽⁵⁾ Memory "1" Switch Circuit Short To Battery

B1537

DDM

⁽⁵⁾ Memory "2" Switch Short To Battery

B1545

DDM

⁽⁶⁾ Power Seat Switch Short To Voltage

B1549

DDM

⁽⁴⁾ Power Window Switch Short To Voltage

B1553

DDM

⁽⁷⁾ Decklid Release Circuit Short To Battery

B1566

DDM

⁽¹⁾ Door Ajar Circuit Short To Ground

B2338

DDM

⁽⁵⁾ Mirror Switch Assembly Circuit Short To Battery

B2368

DDM

⁽⁵⁾ Memory LED Output Short To Battery

B2425

DDM

⁽⁸⁾ Remote Keyless Entry Out Of Synchronization

U1041

ABS

⁽⁹⁾ SCP Invalid Or Missing Data For Vehicle Speed

U1059

PCM

⁽¹⁰⁾ SCP Invalid Or Missing Data For Transmission Range

U1089

VDM

⁽¹¹⁾ SCP Invalid Or Missing Data For Suspension

U1135

LCM

⁽¹²⁾ SCP Invalid Or Missing Data For Ignition Switch

U1181

DDM

⁽¹³⁾ SCP Invalid Or Missing Data For Personalization (Memory) Features

U1199

LCM

⁽¹³⁾ SCP Invalid Or Missing Data For External Access (Doors)

U1222

LCM

⁽¹³⁾ SCP Invalid Or Missing Data For Interior Lights

U1262

⁽¹⁴⁾ SCP Communication Bus Fault

⁽¹⁾	Perform TEST F: SINGLE DOOR LOCK INOPERATIVE/DOOR AJAR SWITCH DOES NOT OPERATE PROPERLY under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article.

⁽²⁾	Replace driver door module and retest system operation.

⁽³⁾	Perform TEST E: ALL DOOR LOCKS INOPERATIVE/DO NOT OPERATE PROPERLY under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article.

⁽⁴⁾	See POWER WINDOWS article.

⁽⁵⁾	See MIRRORS - POWER article.

⁽⁶⁾	See SEATS - POWER article.

⁽⁷⁾	Perform TEST C: SINGLE DOOR LOCK INOPERATIVE/DECKLID DOES NOT OPERATE PROPERLY under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article.

⁽⁸⁾	Perform TEST D: REMOTE KEYLESS ENTRY OUT OF SYNCHRONIZATION under SYSTEM TESTING.

⁽⁹⁾	Using NGS tester, perform ABS Self-Test.

⁽¹⁰⁾	DTC caused by powertrain control module. See G - TESTING W/CODES article in the ENGINE PERFORMANCE section.

⁽¹¹⁾	Using NGS tester, perform VDM Self-Test.

⁽¹²⁾	Using NGS tester, perform LCM Self-Test.

⁽¹³⁾	Using NGS tester, perform DDM Self-Test.

⁽¹⁴⁾	Service all other DTCs first. After all other DTC concerns have been repaired, see MODULE COMMUNICATIONS NETWORK article.

LIGHTING CONTROL MODULE (LCM) DTC DEFINITIONS

DTC

Proceed To

B1312 (Headlight Input Short To Battery Voltage)

⁽¹⁾

B1334 (Decklid Ajar Rear Door Circuit Short To Ground)

⁽²⁾

B1340 (ECS Tone Request Short To Ground)

⁽³⁾

B1342 (ECU Defective)

⁽⁴⁾

B1352 (Ignition Key In Circuit Failure)

⁽⁵⁾

B1359 (Ignition RUN/ACC Input Circuit Failure)

⁽⁵⁾

B1462 (Seat Belt Switch Circuit Failure)

⁽⁵⁾

B1485 (Brake Pedal Input Circuit Failure)

⁽⁶⁾

B1555 (Ignition RUN/START Circuit Failure)

⁽⁵⁾

B1569 (High Beam Short To Battery Voltage)

⁽¹⁾

B1577 (Parking Light Input Circuit Short To Battery Voltage)

⁽⁶⁾

B1581 (Dim Panel Increase Input Circuit Short To Battery Voltage)

⁽⁷⁾

B1585 (Dim Panel Decrease Input Short To Battery Voltage)

⁽⁷⁾

B1676 (Battery Voltage Out Of Range)

⁽⁸⁾

B1687 (Dome Lamp Input Short To Battery Voltage)

⁽⁹⁾

B1689 (Autolamp Delay Input Circuit Failure)

⁽¹⁰⁾

B1691 (Autolamp Delay Input Circuit Short To Battery Voltage)

⁽¹⁰⁾

B1695 (Autolamp ON/OFF Short To Battery Voltage)

⁽¹⁰⁾

B1873 (Turn Signal/Hazard Power Feed Short To Ground)

⁽⁶⁾

U1041 (SCP Invalid Or Missing Data For Vehicle Speed)

⁽¹¹⁾

U1059 (SCP Invalid Or Missing Data For PRNDL)

⁽¹²⁾

U1197 (SCP Invalid Or Missing Data For Door Locks)

⁽¹³⁾

U1199 (SCP Invalid Or Missing Data For Doors)

⁽¹³⁾

⁽¹⁾	See appropriate wiring diagram in HEADLIGHT SYSTEMS article.

⁽²⁾	Perform TEST C: SINGLE DOOR LOCK INOPERATIVE/DECKLID DOES NOT OPERATE PROPERLY under SYSTEM TESTING in DOOR LOCKS & TRUNK RELEASE - POWER article.

⁽³⁾	See WIRING DIAGRAMS in AIR BAG RESTRAINT SYSTEMS article.

⁽⁴⁾	Replace Lighting Control Module (LCM) and retest system operation.

⁽⁵⁾	See ANTI-THEFT SYSTEMS article to continue diagnosis.

⁽⁶⁾	See appropriate wiring diagram in EXTERIOR LIGHTS article.

⁽⁷⁾	See WIRING DIAGRAMS in INSTRUMENT PANELS - ANALOG article or AUTOLAMP SYSTEMS article to continue diagnosis.

⁽⁸⁾	See GENERATORS article in the STARTING & CHARGING SYSTEMS section to continue diagnosis.

⁽⁹⁾	See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article.

⁽¹⁰⁾	See AUTOLAMP SYSTEMS article.

⁽¹¹⁾	Using NGS tester, perform ABS Self-Test.

⁽¹²⁾	Using NGS tester, perform PCM Self-Test.

⁽¹³⁾	Using NGS tester, perform DDM Self-Test.