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Symptom Id Test 1B - Identifying Fault Messages

NOTE: Perform SYMPTOM ID TEST 1A  before proceeding with this test.

If scan tool displays fault messages in TEST 1A, record message(s) displayed and perform appropriate test(s). See SCAN TOOL MESSAGE DIRECTORY table.

SCAN TOOL MESSAGE DIRECTORY

Scan Tool Display Perform
BATTERY POWER TO MODULE DISCONNECTED TEST 3A 
EATX PRNDL MESSAGE TEST FAILED VEHICLE COMM. TEST 8A 
EEPROM CHECKSUM FAILURE (1) Replace BCM
FRONT WIPER PARK SWITCH CKT OPEN WINDSHIELD WIPER TEST 6A 
FRONT WIPER PARK SWITCH CKT SHORTED WINDSHIELD WIPER TEST 6B 
FUEL LEVEL SENDING CIRCUIT ERROR INSTRUMENT CLUSTER TEST 3A 
HORN SWITCH FAILURE VTSS TEST 6A 
INTERNAL MODULE TEST FAILED (1) Replace BCM
LEFT DOOR KEY CYL DISARM SW FAILURE POWER DOOR LOCK TEST 5A 
LEFT DOOR LOCK SWITCH FAILURE POWER DOOR LOCK TEST 8A 
LEFT DOOR KEY CYL ARM SWITCH FAILURE POWER DOOR LOCK TEST 12A 
LEFT DOOR UNLOCK SWITCH FAILURE POWER DOOR LOCK TEST 10A 
LIFTGATE KEY CYL DISARM SW FAILURE POWER DOOR LOCK TEST 7A 
LIFTGATE KEY CYL ARM SW FAILURE POWER DOOR LOCK TEST 14A 
LIFTGATE DOOR MUX CKT SHORTED TO GND POWER DOOR LOCK TEST 4A 
LT FRONT DOOR MUX CKT SHORTED TO GND POWER DOOR LOCK TEST 3A 
NO CCD MESSAGES FROM PCM VEHICLE COMM. TEST 6A 
REAR WIPER MUX CIRCUIT ERROR WINDSHIELD WIPER TEST 13A 
RIGHT DOOR KEY CYL DISARM SW FAILURE POWER DOOR LOCK TEST 6A 
RIGHT DOOR LOCK SWITCH FAILURE POWER DOOR LOCK TEST 9A 
RIGHT DOOR KEY CYL ARM SW FAILURE POWER DOOR LOCK TEST 13A 
RT FRONT DOOR MUX CKT SHORTED TO GND POWER DOOR LOCK TEST 2A 
RIGHT DOOR UNLOCK SWITCH FAILURE POWER DOOR LOCK TEST 11A 
(1) After replacing Body Control Module (BCM), perform VERIFICATION TEST VER-1A  .