FixVault

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 1: 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 SYSTEM TESTS .

PASSIVE ANTI-THEFT SYSTEM MODULE DTC INDEX

DTC Description
(1)B1213  Anti-Theft Number Of Programmed Keys Is Below Minimum
B1232  PATS Transceiver Antenna Not Connected Or Defective Transceiver
B1600  No Key Code Received/Damaged Encoded Ignition Key Or Use Of Non-PATS Key
B1601  Unprogrammed Encoded Ignition Key (Code Format Okay)
B1602  Invalid Key Code Format From Ignition Key Transponder (Partial Key Code Read)
B1681  PATS Transceiver Signal Is Not Received
B2139  PCM Identification Does Not Match Between PATS & PCM
B2141  PCM Identification Unregistered In PATS Module
P1260 Theft Detected - Vehicle Disabled (2)
U1147  PCM - PATS Module Communication Error
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 TROUBLE SHOOTING article in ENGINE PERFORMANCE.
(3) Repair SCP bus communications concern. See MODULE COMMUNICATIONS NETWORK - PICKUP article.