Preliminary Procedure

Verify customers complaint by operating keyless entry system. Check for obvious signs of mechanical or electrical damage. Check for blown fuse(s), loose or corroded connectors, or damaged wiring harness. Repair or replace components as necessary. Also see TROUBLE SHOOTING .
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 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 SYSTEMS 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 are retrieved, see MODULE COMMUNICATIONS NETWORK article to diagnose network concern. If RAP DTCs are retrieved, see REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC DEFINITIONS table to continue diagnosis. If no DTCs are retrieved, perform appropriate symptom test under SYSTEM TESTS .

REMOTE ANTI-THEFT PERSONALITY (RAP) MODULE DTC DEFINITIONS

DTC/Description

Go To Test

B1309 Power Door Lock Circuit Short To Ground

B1341 Power Door Unlock Circuit Short To Ground

B1485 Brake Pedal Circuit Short To Voltage

B1562 Door Lock Cylinder Circuit Short To Ground

⁽¹⁾

B1629 Gearshift Indicator Short To Voltage

B2425 Keyless Entry Out Of Synchronization

⁽¹⁾	See MODULE COMMUNICATIONS NETWORK article.