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Retrieving DTCS

Verify customers complaint by operating PATS. Ensure electronically coded ignition key is being used. Check for damaged ignition lock cylinder switch, damaged encoded ignition key or open fuses. Check for loose or corroded connectors, damaged wiring harness, damaged ignition switch or damaged transceiver module. Repair or replace components as necessary.

Connect New Generation Star (NGS) tester to Data Link Connector (DLC), located beneath instrument panel. Using NGS tester, preform data link diagnostics test. See MODULE COMMUNICATIONS NETWORK - PICKUP article. If NGS tester displays NO RESP/NOT EQUIP for Passive Anti-Theft System (PATS) module, perform TEST A: NO COMMUNICATION WITH PASSIVE ANTI-THEFT SYSTEM MODULE  under SYSTEM TESTS.

If NGS tester responds with SYSTEM PASSED, retrieve and record continuous DTCs. Erase continuous DTCs. Using NGS tester, perform PATS self-diagnostic test. If DTCs are retrieved, see PASSIVE ANTI-THEFT SYSTEM MODULE DTC INDEX  table. If no DTCs are retrieved, repair system based on symptom. See SYMPTOM TESTS .

PASSIVE ANTI-THEFT SYSTEM MODULE DTC INDEX

DTC Description Perform Test
B1213 Anti-Theft Number Of Programmed Keys Is Below Minimum (1)B1213 
B1232/B2103 PATS Transceiver Antenna Not Connected Or Defective Transceiver B1232 
B1600 No Key Code Received/Damaged Encoded Ignition Key Or Use Of Non-PATS Key B1600 
B1601 Unprogrammed Encoded Ignition Key (Code Format Okay) B1601 
B1602 Invalid Key Code Format From Ignition Key Transponder (Partial Key Code Read) B1602 
B1681 PATS Transceiver Signal Is Not Received B1681 
B2139 PCM Identification Does Not Match Between PATS & PCM B2139 
B2141 PCM Identification Unregistered In PATS Module B2141 
P1260 Theft Detected - Vehicle Disabled (2)
U1147 Invalid Or Missing Data For Vehicle Security U1147 
U1262 SCP Bus Communication Fault (3)
(1) If DTCs B1232, B1600, B1601, B1602 or B1681 are also present, service these DTCs first then recheck codes.
(2) See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.
(3) Repair SCP bus communications concern. See MODULE COMMUNICATIONS NETWORK - PICKUP article.
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