Pneumatic & Power Door Lock Systems

DIAGNOSTIC TROUBLE CODE LIST (PSE CONTROL MODULE)

Code	Cause	Test/Remedy
B1021	No Communication With PSE Control Module	Replace CCM, Replace PSE Control Module Perform PSE control module test. See PNEUMATIC SYSTEM EQUIPMENT under SYSTEM TESTS.
B1024	No Communication With CCM (Low)	Replace CCM Perform PSE control module test steps 2), 4), 6) & 8). See PNEUMATIC SYSTEM EQUIPMENT under SYSTEM TESTS.
B1025	No Communication With CCM (High)	Replace CCM Perform PSE control module test steps 3), 5), 7) & 8). See PNEUMATIC SYSTEM EQUIPMENT under SYSTEM TESTS.
B1100	Lock Sw. Short Between RCL Control Module & CCM	Perform remote control locking system test steps 19 and 20). See REMOTE CONTROL LOCKING (RCL) under SYSTEM TESTS in KEYLESS ENTRY SYSTEM article.
B1116	RHR Unlocking Switch Signal More Than 25 Seconds	Perform retractable rear headrest test. See RETRACTABLE REAR HEADREST under SYSTEM TESTS.
B1117	Interior Switch Signal More Than 25 Seconds	Perform central locking test step 1). See CENTRAL LOCKING under SYSTEM TESTS.
B1124	Remote Trunk Release Signal More Than 25 Seconds	Perform remote trunk release test step 1). See REMOTE TRUNK RELEASE under SYSTEM TESTS.
B1436	Central Locking (Malfunction Due To Error Signal From Other Consumers or Pneumatic System Leak)	Perform pneumatic system vacuum test steps 1) through 9). See PNEUMATIC SYSTEM EQUIPMENT under VACUUM SYSTEM TESTS. Perform central locking vacuum test steps 1) through 8). See CENTRAL LOCKING under VACUUM SYSTEM TESTS.
B1437	Retractable Headrest Pneumatic System Leak	Perform retractable rear headrest vacuum test step 1) through 3). See RETRACTABLE REAR HEADREST under VACUUM SYSTEM TESTS.
B1438	Multi-Contour Seat (Air Pressure Or Safety Time)	Perform orthopedic seat vacuum test steps 1) through 4). See ORTHOPEDIC SEAT under VACUUM SYSTEM TESTS.
B1439	Manifold Vacuum Assist Time Greater Than Maximum	Perform manifold vacuum assist test. See MANIFOLD VACUUM ASSIST under VACUUM SYSTEM TESTS.