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Test N: Panic Function Inoperative

WARNING: This page is about a different car, the 2002 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: After making any repairs, retest system for proper operation.
  1. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below driver's side of instrument panel, right of steering column. Using NGS tester, observe TRANSMITTER TIC/DATA. Press and release PANIC button on Remote Keyless Entry (RKE) transmitter. Alarm should activate and NGS tester should display PANIC beside TRANSMITTER TIC/DATA. If NGS tester displays as specified but parking lights do not flash, go to next step. If NGS tester displays as specified but horn does not chirp, go to step  5. If NGS tester does not display as specified, reprogram defective RKE transmitters. See REMOTE TRANSMITTER  under PROGRAMMING. If problem still exists, replace defective RKE transmitter and reprogram new one.
  2. Using NGS tester, turn parking lights on and off. If parking lights do not operate normally, go to next step. If parking lights operate normally, go to step  8.
  3. Turn parking lights on and off with headlight switch. If parking lights operate normally, go to next step. If parking lights do not operate properly, diagnose headlight switch. See EXTERIOR LIGHTS in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.
  4. Ensure ignition switch is in LOCK position. Disconnect Central Security Module (CSM) harness connector C274b. CSM is located behind instrument panel, left of steering column. Disconnect parking lights relay. Parking lights relay is located in lock relay block, behind right side of instrument panel. Measure resistance in Light Green/Yellow wire between parking lights relay terminal No. 2 and CSM harness connector C274b terminal No. 3. See Figure and Fig 1 . If resistance is less than 5 ohms, go to step  8. If resistance is greater than, repair open in Light Green/Yellow wire between parking lights relay and CSM. See WIRING DIAGRAMS .
  5. Check horn operation. If horn operates correctly, go to next step. If horn does not operate correctly, diagnose horn problem. See STEERING COLUMN SWITCHES - F150 PICKUP article.
  6. Turn ignition switch to RUN position. Using NGS tester, activate horn on and off. If horn does not chirp, go to next step. If horn does chirp, go to step  8.
  7. Turn ignition switch to LOCK position. Disconnect horn relay. Horn relay is located in battery junction box. Disconnect Central Security Module (CSM) harness connector C274a. CSM is located behind instrument panel, left of steering column. Measure resistance in Dark Blue wire between horn relay socket terminal No. 2 and CSM harness connector C274a terminal No. 10. See Figure and Fig 1 . If resistance is 5 ohms or less, go to next step. If resistance is more than 5 ohms, repair open in Dark Blue wire between horn relay and CSM. See WIRING DIAGRAMS .
  8. Ensure ignition switch is in LOCK position. Disconnect all CSM harness connectors. CSM is located behind instrument panel, left of steering column. Check for backed out or corroded terminals. Repair terminals as necessary. Connect all CSM harness connectors. Check operation of power door lock system. If problem still exists, replace CSM. See CENTRAL SECURITY MODULE  under REMOVAL & INSTALLATION. If problem does not exist, clear all DTCs and perform CSM self-test.
Fig 1: Identifying Door Unlock, All-Unlock, Driver Unlock & Parking Lights Relay Socket Connector Terminals
G98B00332Courtesy of FORD MOTOR CO.
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