Symptom Id Test 1B - Identifying Diagnostic Trouble Codes
NOTE:
TEST 2A through TEST 28A are related to A/C-heater systems. For A/C-heater system test procedures, see A/C-HEATER SYSTEM article in the AIR CONDITIONING & HEAT section.
If scan tool displays fault messages in SYMPTOM ID TEST 1A, record messages displayed and perform appropriate test(s) listed in SCAN TOOL MESSAGE DIRECTORY table.
SCAN TOOL MESSAGE DIRECTORY
| Scan Tool Display | (1) Perform | ||||
|---|---|---|---|---|---|
| BATTERY POWER TO MODULE DISCONNECTED | TEST 113A | ||||
| COURTESY LAMP OUTPUT FAILURE | TEST 35B | ||||
| DIMMING MESSAGE | (2) TEST 4A | ||||
| EEPROM CHECKSUM FAILURE | (1) | ||||
| ENGINE TEMP MSG TEST FAILED | (2) TEST 15A | ||||
| FUEL SENSOR OPEN | TEST 68A | ||||
| INTERNAL MODULE TESTS FAILED | (1) | ||||
| PANEL LAMP PWM OUTPUT FAILURE | TEST 60A | ||||
| STATUS 26 NOT RECEIVED | (2) TEST 4A | ||||
| TRANS PRNDL MESSAGE TEST FAILED | TEST 59A | ||||
| WIPER PARK SWITCH FAILURE | TEST 108A | ||||
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