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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 SYMPTOM ID TEST 1A, record fault messages displayed and perform appropriate test(s). See FAULT MESSAGES  table.

FAULT MESSAGES

Scan Tool Display Perform
AMBIENT TEMPERATURE SENSOR OPEN CMTC TEST 3A 
AMBIENT TEMPERATURE SENSOR SHORTED CMTC TEST 2A 
BATTERY POWER TO MODULE DISCONNECTED VEHICLE COMMUNICATION TEST 4A 
COURTESY LAMP RELAY OPEN INTERIOR LIGHTING TEST 2A 
COURTESY LAMP RELAY SHORT INTERIOR LIGHTING TEST 5A 
EBL RELAY OPEN (1)
EBL RELAY SHORT (1)
EBL SWITCH FAILURE (1)
EEPROM CHECKSUM ERROR (2)
FOG LAMP RELAY OPEN EXTERIOR LIGHTING TEST 7B 
FOG LAMP RELAY SHORT EXTERIOR LIGHTING TEST 7B 
HEADLAMP RELAY OPEN EXTERIOR LIGHTING TEST 2B 
HEADLAMP RELAY SHORT EXTERIOR LIGHTING TEST 6A 
HORN RELAY OPEN VTSS TEST 4A 
HORN RELAY SHORT VTSS TEST 4A 
INTERNAL MODULE TEST FAILED (2)
OCTAL OUTPUT DRIVER TEST (2)
PARK LAMP RELAY OPEN VTSS TEST 6B 
PARK LAMP RELAY SHORT VTSS TEST 6B 
PWM DIMMING TEST FAILED INSTRUMENT CLUSTER TEST 11A 
RAM TEST FAILURE (2)
WIPER PARK SWITCH FAILURE WINDSHIELD WIPER TEST 4A 
WIPER RELAY OPEN WINDSHIELD WIPER TEST 2A 
WIPER RELAY SHORT WINDSHIELD WIPER TEST 3A 
(1) EBL (Electronic Back Light) refers to rear window defogger system. Refer to DEFOGGER - REAR WINDOW & HEATED MIRRORS article.
(2) Replace body control computer. Perform TEST VER-1A  .