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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 COMMUNICATIONS 
MODULE DISCONNECTED TEST 3A 
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 ANTI-THEFT SYSTEM TEST 4A 
HORN RELAY SHORT ANTI-THEFT SYSTEM TEST 4A 
INTERNAL MODULE TEST FAILED (2)
OCTAL OUTPUT DRIVER TEST (2)
PARK LAMP RELAY OPEN ANTI-THEFT SYSTEM TEST 6B 
PARK LAMP RELAY SHORT ANTI-THEFT SYSTEM 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. See the DEFOGGER - REAR WINDOW & HEATED MIRRORS article.
(2) Replace body control computer. Perform TEST VER-1A  .