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Using Scan Tool

WARNING: This page is about a different car, the 2002 Lincoln Navigator and 2002 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
  1. For preliminary testing, see TROUBLE SHOOTING . If problem is not found, connect NGS tester to Data Link Connector (DLC). DLC is located below center of instrument panel, right of steering column. Perform data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article. If NGS tester displays CKT914, CKT915 or CKT70 = ALL ECUS NO RESP/NOT EQUIP, diagnose and repair module concern. See MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article. If NGS tester displays NO RESP/NOT EQUIP for HEC, perform TEST A: NO COMMUNICATION WITH HYBRID ELECTRONIC CLUSTER  in SYSTEM TESTS. If NGS tester displays NO RESP/NOT EQUIP for GEM, perform TEST B: NO COMMUNICATION WITH GENERIC ELECTRONIC MODULE  in SYSTEM TESTS.
  2. If NGS tester displays SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Perform self-test for HEC and GEM. If DTCs related to concern reset, see HYBRID ELECTRONIC CLUSTER DIAGNOSTIC TROUBLE CODE INDEX  or GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE INDEX  tables. If no DTCs related to the concern are retrieved, repair by symptom. See SYMPTOM INDEX  table under SYSTEM TESTS. For GEM DTCs not covered in this article, see MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article.
HYBRID ELECTRONIC CLUSTER DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) DTC Displayed In HEC Test Mode Description Perform Test
B1202 9202 Fuel Sender Open C 
B1204 9204 Fuel Sender Short To Ground C 
B1342 9342 ECU Defective (2)
C1284 5284 Oil Pressure Switch Failure E 
(1) Codes listed in this table are only for testing covered in this article. For complete diagnostic trouble codes listing, see MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article.
(2) Clear Diagnostic Trouble Codes (DTCs). Repeat self-test. If DTC B1342 resets, replace instrument cluster. Clear DTCs and retest system.
GENERIC ELECTRONIC MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) Description Perform Test
B1323 Door Ajar Circuit Failure (Light Never On) J 
B1323 Door Ajar Circuit Failure (Light Always On) K 
B1325 Door Ajar Light Circuit Short To Power J 
B1342 ECU Defective (2)
B1426 Safety Belt Light Circuit Short To Power H 
B1428 Safety Belt Light Circuit Failure (Light Always On) I 
P1804 4-Wheel Drive High Indicator Circuit Failure N 
P1806 4-Wheel Drive High Indicator Short To Power N 
(1) Codes listed in this table are only for testing covered in this article. For complete Generic Electronic Module GEM diagnostic trouble code listing, see MODULE COMMUNICATIONS NETWORK - EXPEDITION & NAVIGATOR article.
(2) Replace Generic Electronic Module GEM. See GENERIC ELECTRONIC MODULE  under REMOVAL & INSTALLATION. Clear diagnostic trouble codes and perform GEM self-test.
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